From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::102f; helo=mail-pj1-x102f.google.com; envelope-from=suichen6@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=vRqJ1kQi; dkim-atps=neutral Received: from mail-pj1-x102f.google.com (mail-pj1-x102f.google.com [IPv6:2607:f8b0:4864:20::102f]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 495Y4S74dczDqmd for ; Tue, 21 Apr 2020 03:05:56 +1000 (AEST) Received: by mail-pj1-x102f.google.com with SMTP id np9so123015pjb.4 for ; Mon, 20 Apr 2020 10:05:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=message-id:mime-version:date:from:subject:thread-topic:to :content-transfer-encoding; bh=t2uEeo4DomGPLwyGxWAJUnvV1aK32Pf7KHDfY5DVRco=; b=vRqJ1kQivfO0p9ygCiGDobTI5wHdVQgQr/ueXyNiwYE7xKwhPNt4IPZF/S3hOreqx5 23WJf/lRY9CpQ5i8eCiD2Da3GMscCO/Om06DSXUxoWpp8sUM3XHs+XRI+MYu2QWN5VcQ 3KhZICK/a+lTJkRcfdCU6OvswOWoXBcohghxuyhr/Yswea8QYijBr/PFO8G62PWHqwCC G1IOzLYR1swxuzk0TOzv18/NLVrRlBbpOxTlmBJ8ulTCMM+lCysqzvTaOPRiPxbiHVr3 vyMpDiUxh09Chsv9X2VxBvpUg6xD0TbBcP8ZjwoPdEKE/W2NdvUba0yRjnONXFJwpMN3 Lmzg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:message-id:mime-version:date:from:subject :thread-topic:to:content-transfer-encoding; bh=t2uEeo4DomGPLwyGxWAJUnvV1aK32Pf7KHDfY5DVRco=; b=Cc4iyXxg+DqbQHLHskawdBsiaRJ5SYpLYuWFB2uNmMmX1PGkPBKFwxy9/RD1Blai1Y cjrc0lCBY1JLF0kMYySJOTO9D2yzFPtlVqxNsIfgbJi5koY4wqNZAEAb8u6yrAmj2OhP OgXiRo4rf4ANAF9aglTbUWiSvckFfyMK88e+WbVpiNQka4QafX62gysa8s+poY9lh+d6 prVduvusyuF0itBf3f9WMsVi5WyrmM7SIPFetTqk1DedvG1dQOGPKk4ZlCcleCeBzd2s gkijXpAG5IT94XoZpPBVVXSMM5wDGyVyesZ8WZYiCL9rKDk8NVPE43+7mG4zYEQ5Ilkh YvXw== X-Gm-Message-State: AGi0Pub7NRafH6ODpIqW2xZA7jVECF2IfuWPJOFLknVzg0h5dn20jXmO 2bHjHqE9Ww/pMSCSKNdE6lgeNOUpr6k= X-Google-Smtp-Source: APiQypItvJB4uSO2sTkNHN42sDWZBjhjzqd0lCJMGq+wEI12J57ET50L1bQnucF0jF2gjrWNWzUBSQ== X-Received: by 2002:a17:90a:1da6:: with SMTP id v35mr485505pjv.44.1587402352556; Mon, 20 Apr 2020 10:05:52 -0700 (PDT) Received: from smtp.gmail.com ([2601:647:4c00:3a60:a0f6:a1ab:fa9a:2606]) by smtp.gmail.com with ESMTPSA id l137sm30274pfd.107.2020.04.20.10.05.51 for (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Mon, 20 Apr 2020 10:05:51 -0700 (PDT) Message-ID: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> MIME-Version: 1.0 Date: Mon, 20 Apr 2020 10:05:48 -0700 From: Sui Chen Subject: Re: Call for Gardening Tasks Thread-Topic: Re: Call for Gardening Tasks To: "openbmc@lists.ozlabs.org" Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset="utf-8" X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Mon, 20 Apr 2020 17:06:01 -0000

> On Apr 11, 2= 020, at 8:15 AM, Andrew Geissler <geissonator at gmail.com> wrote:

> Systemd Visualization<= /span>

> Another complicated = area of OpenBMC is our systemd targets and services. Building on the upstre= am tools to visualize our systemd targets and services would be useful to n= ew people.

+1 to visualization, and I have a few thou= ghts on this ---

My lacking a mental model of how an OpenBMC s= ystem works had been my pain point in the first few months working with Ope= nBMC (I=E2=80=99m a bit new to this area), so after learning the minimal se= t of survival skills I did something similar to what you mentioned =E2=80= =93 visualizing the messages passed between different dbus peers (and conve= niently, IPMI traffic, as IPMI-related dbus messages exposing all IPMI payl= oad comprise most of the dbus traffic on that particular system I was worki= ng on.)

I think packet analysis tools suc= h as Wireshark and graphics frame analysis tools such as RenderDoc, or syst= em event-based Windows Performance tool like GPUView provide great examples= of what people might expect to achieve with a visualization tool: capture,= inspect and (sometimes) playback, across multiple layers in the software/h= ardware stack. Many similar existing tools process sequences of events, and= in this case of BMCs, the events could be dbus messages. I found a prototy= pe visualizer made at work greatly helpful in explaining to new team member= s some basic concepts and the IPMI stack on the BMC.

<= p class=3DMsoNormal>&nbs= p;

The IPMI stack is interesting because it=E2=80=99s one noticeabl= e workload on the particular BMC system I had been working on; in my curren= t limited understanding, having lots of I/O capability to connect to hundre= ds of sensors is one of the many features that set apart a BMC chip and a s= imilarly powerful smartphone chip, and the broad use of dbus is what sets a= part OpenBMC and the desktop Linux distro I had been using. I heard optimiz= ation is best done workload by workload, perhaps this rationale applies to = visualization too?

I realize I was mostly = talking about visualizing the run-time state of the system rather than buil= d-time, but we could visualize the run-time aspect of systemd units too sin= ce I have seen many times a dbus message eventually triggering a systemd ta= rget to acutate the system, so it would be good to consider both dbus and s= ystemd (and maybe other parts of the system?) to have a more holistic view = of the BMC=E2=80=99s operations.

<= p class=3DMsoNormal>Thanks

Sui

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Content-Transfer-Encoding: quoted-printable

This is a very good idea. As the first time to do openbmc, I = look forward to it. Currently, I am being troubled by the problems you desc= ribe.

The following questions, please also help you answer it,= thank you very much.

1.I modified the dts file, how to use the command "bitba= ke -f linux-aspeed" to Generate fitimage and dub=A3=BF

Now, I modify the dts file in the kernel source di= rectory. When I compile, bitbake will re-fetch the source code, decompress,= patch, configure, and compile, causing my changes to be overwritten. I cur= rently use manual call scripts to compile dts files and make images for debugging.Is there a way to make bitbake skip the prev= ious steps and compile directly=A3=BF

2.The size of image-rwfs is 0, I want to use rwfs debug= ging, how to configure to generate a normal image-rwfs?

-rw-r--r--. 2 harleyzhou harleyzhou = 9443 4=D4=C2 = ; 7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.manifest

-rw-r--r--. 2 harleyzhou harleyzhou 18214912 = ; 4=D4=C2 7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.squashfs-xz

-rw-rw-r--. 2 harleyzhou harleyzhou 33554432 = ; 4=D4=C2 7 17:27 obmc-phosphor-image-= xxh-20200407092558.static.mtd

-rw-rw-r--. 2 harleyzhou harleyzhou 33566720 = ; 4=D4=C2 7 17:28 obmc-phosphor-image-= xxh-20200407092558.static.mtd.all.tar

-rw-rw-r--. 2 harleyzhou harleyzhou 22384640 = ; 4=D4=C2 7 17:28 obmc-phosphor-image-= xxh-20200407092558.static.mtd.tar

-rw-r--r--. 2 harleyzhou harleyzhou 308218 = 4=D4=C2 7 17:2= 7 obmc-phosphor-image-xxh-20200407092558.testdata.json

-rw-r--r--. 2 harleyzhou harleyzhou = 0 4=D4=C2 7 17:27 = obmc-phosphor-image-xxh.jffs2

3. I did not find the source code of "pgood_wait" a= nd "power_control.exe" in obmc-op-control-power? where can I get = it ?

4.OpenBMC uses systemd to manage all processes, So i analyzed the process of systemd starting p= rocess and saw "default.target-> basic.target-> sysinit.target-&= gt; local-fs.target", there is no content behind.please help to provid= e clues of systemd starting process.

5.I understand the following execution process of power-on , help c= heck if it is correct.

a).rest or busctl send power-on commands to syst= emd through d-bus messages.

b).systemd find the obmc-chassis-poweron@.target

c).systemd find the obm= c-power-start@.target

d).systemd find the&= nbsp;op-power-start@0.service

e).systemd start a thread and execute "busctl call `mapper get-service /org/openbmc/control/power%i` /org/openbmc/control/power%i org.openbmc.control.Power setPowerState I 1&q= uot;

appendix=A3=BA

ls= obmc-chassis-poweron@0.target.requires

op= -power-start@0.service op-wait-power-on@0.service

ca= t obmc-chassis-poweron@.target

[U= nit]

De= scription=3DChassis%i (Power On)

Wa= nts=3Dmulti-user.target

Af= ter=3Dmulti-user.target

Wa= nts=3Dmapper-wait@-xyz-openbmc_project-state-chassis%i.service

Af= ter=3Dmapper-wait@-xyz-openbmc_project-state-chassis%i.service

Wa= nts=3Dmapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc= _project.Software.ActivationBlocksTransition.service

Af= ter=3Dmapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc= _project.Software.ActivationBlocksTransition.service

ca= t op-power-start@0.service

[U= nit]

De= scription=3DStart Power%i

Wa= nts=3Dobmc-power-start@%i.target

Be= fore=3Dobmc-power-start@%i.target

Af= ter=3Dobmc-power-start-pre@%i.target

Af= ter=3Dobmc-fan-control.target

Wa= nts=3Dmapper-wait@-org-openbmc-control-power%i.service

Af= ter=3Dmapper-wait@-org-openbmc-control-power%i.service

[S= ervice]

Re= mainAfterExit=3Dyes

Ty= pe=3Doneshot

Ex= ecStart=3D/bin/sh -c "busctl call `mapper get-service /org/openbmc/con= trol/power%i` /org/openbmc/control/power%i org.openbmc.control.Power setPow= erState i 1"

Sy= slogIdentifier=3Dop-power-start

[I= nstall]

Wa= ntedBy=3Dobmc-host-start@%i.target

ca= t obmc-power-start@.target

[U= nit]

De= scription=3DPower%i On

Af= ter=3Dobmc-power-start-pre@%i.target

Wa= nts=3Dmulti-user.target

Co= nflicts=3Dobmc-chassis-poweroff@%i.target

Re= fuseManualStart=3Dyes

Re= fuseManualStop=3Dyes

Thanks

Harley

=B7=A2=BC=FE=C8=CB: openbmc= <openbmc-bounces+zhouyuanqing8=3Doutlook.com@lists.ozlabs.org> = =B4=FA=B1=ED Sui Chen <suichen6@gmail.com>
=B7=A2=CB=CD=CA=B1=BC=E4: 2020=C4=EA4=D4=C221=C8=D5 1:05
=CA=D5=BC=FE=C8=CB: openbmc@lists.ozlabs.org <openbmc@lists.ozlab= s.org>
=D6=F7=CC=E2: Re: Call for Gardening Tasks

> On Apr 11, 2020, at 8:15 AM, Andrew Geissler <= geissonator at gmail.com> wrote:

> Systemd Visualization

> Another complicated area of OpenBMC is our system= d targets and services. Building on the upstream tools to visualize our sys= temd targets and services would be useful to new people.

+1 to visualization, an= d I have a few thoughts on this ---

My lacking a mental model o= f how an OpenBMC system works had been my pain point in the first few month= s working with OpenBMC (I=A1=AFm a bit new to this area), so after learning= the minimal set of survival skills I did something similar to what you mentioned =A8C visualizing the messages pass= ed between different dbus peers (and conveniently, IPMI traffic, as IPMI-re= lated dbus messages exposing all IPMI payload comprise most of the dbus tra= ffic on that particular system I was working on.)

I think packet analysis too= ls such as Wireshark and graphics frame analysis tools such as RenderDoc, o= r system event-based Windows Performance tool like GPUView provide great ex= amples of what people might expect to achieve with a visualization tool: capture, inspect and (sometimes) playba= ck, across multiple layers in the software/hardware stack. Many similar exi= sting tools process sequences of events, and in this case of BMCs, the even= ts could be dbus messages. I found a prototype visualizer made at work greatly helpful in explaining to new t= eam members some basic concepts and the IPMI stack on the BMC.

The IPMI stack is interesti= ng because it=A1=AFs one noticeable workload on the particular BMC system I= had been working on; in my current limited understanding, having lots of I= /O capability to connect to hundreds of sensors is one of the many features that set apart a BMC chip and a similarly powe= rful smartphone chip, and the broad use of dbus is what sets apart OpenBMC = and the desktop Linux distro I had been using. I heard optimization is best= done workload by workload, perhaps this rationale applies to visualization too?

I realize I was mostly talk= ing about visualizing the run-time state of the system rather than build-ti= me, but we could visualize the run-time aspect of systemd units too since I= have seen many times a dbus message eventually triggering a systemd target to acutate the system, so it would = be good to consider both dbus and systemd (and maybe other parts of the sys= tem?) to have a more holistic view of the BMC=A1=AFs operations.

Thanks

Sui

--_000_PS2PR04MB383294A0D7402F9204C46C97FED50PS2PR04MB3832apcp_-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=google.com (client-ip=2a00:1450:4864:20::229; helo=mail-lj1-x229.google.com; envelope-from=rhanley@google.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=reject dis=none) header.from=google.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=google.com header.i=@google.com header.a=rsa-sha256 header.s=20161025 header.b=hZtuwlul; dkim-atps=neutral Received: from mail-lj1-x229.google.com (mail-lj1-x229.google.com [IPv6:2a00:1450:4864:20::229]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 496KJV3wNhzDqrn for ; Wed, 22 Apr 2020 09:19:03 +1000 (AEST) Received: by mail-lj1-x229.google.com with SMTP id w20so324618ljj.0 for ; Tue, 21 Apr 2020 16:19:03 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc; bh=Nk17Wq5YZWJ3adBr5fPtb9svJstDdubh3hiqK1wzqao=; b=hZtuwlulhJbHAN3H/5drQu0/YwxMr8p7WvNuX1CzEHWW2k1x+bHyk3wK4hR9AC5F32 VqblcxOObTHBs9R1AeKyh2vh8LkAZRO2YHA1I/Wd95vyWe5kOx8kIm8jMzIpxl1hbAYW PW/18x0uk14Js/MtppCsP/HKiW62t2b6giJCtyn5qeVmFEI32n6Hm2anKj2WsLxYRLuD NyAIt35XJXS1KWfrCBSCTY5vM3XjzXiEnfO+zGKJB5hUGjV+sf341BZFUPEHPPPc3WQU YoaIFlMzRK5YGcNne9e1fOMpfr35cgA8REtF2ACbjdNBPFz28DcjB50aTftMqAwt6TRb bYTQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc; bh=Nk17Wq5YZWJ3adBr5fPtb9svJstDdubh3hiqK1wzqao=; b=iXNf7YgTfZDLiTChItGX1xYYG329KigtldjQcEJRVVjIiK7mlaxQoDsdgRKpV8Bitz xGlD5lGHuM/70aWSYqK4HI2xj5RTQg2NSu6aOnZglO8cprEd7ZrBz1PrjQoGu02WuyI0 /uUsKkYUZP8pOhTlCjYndZAy2fj0YDrFXd1WfemUWTt+Wb8hCYSAYmRaKHfUxajl9QMH zpiBwqqpExR5nP0HIHZEFwT+u+ksDI3EMmJnCTfnUcNj6djGY3DVW+TYIohHeV3PvuFu 7GZVaZOWCZQSSfN2qPrTlxlL2aN0Jq9TyQljljsD1H3jfxpsJY4v+hNJBc2X5IqR6eod co+Q== X-Gm-Message-State: AGi0PuZ8zVSZ+b6+iR3o41bKHnj4KNp61vhjQ0yxpLu3K8abnACIK7YH zQUlBdTpGGfp0TBsaeK6TtODM0l8BtdowcHEG7983Q== X-Google-Smtp-Source: APiQypIgA2XJPlN1h+najrbjqYURpE9z5jcRnGFOYt9xiBFgzm2ql9V1ER/sg/MsR2CR9U1tJ9U2La8rB7VTwuK4yJw= X-Received: by 2002:a2e:b4d0:: with SMTP id r16mr14632897ljm.129.1587511139025; Tue, 21 Apr 2020 16:18:59 -0700 (PDT) MIME-Version: 1.0 References: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> In-Reply-To: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> From: Richard Hanley Date: Tue, 21 Apr 2020 16:18:47 -0700 Message-ID: Subject: Re: Call for Gardening Tasks To: Sui Chen Cc: "openbmc@lists.ozlabs.org" Content-Type: multipart/alternative; boundary="00000000000085216705a3d53dc6" X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 21 Apr 2020 23:19:07 -0000 --00000000000085216705a3d53dc6 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Thank you everyone for your suggestions. Scanning through this it's clear that documentation is one of the biggest most generally agreed upon area to work on. Build tools and package management seems like another area with some agreed on improvements. I like the idea of moving to meson. Getting tidy files and revising our style guides also sound like good ideas. I also really agree that we could stand to do some consolidation of processes/repos. There is also some use for DBus tooling for both improved code, and for visualizations. So here are my next steps: 1) Since we have some new people getting started, I've asked them to add documentation at the points they get stuck during on-boarding. 2) I'm going to take the ideas in this thread and put together a .md doc with any relevant information I can find. I'll be adding it to openbmc/docs= . 3) I'll follow up in another thread about some of the ideas around DBus tooling and package consolidation. That seems to be an area where most people agree some improvements can be made, but I'm not sure there is an agreement on how we should do it. -Richard On Mon, Apr 20, 2020 at 10:19 AM Sui Chen wrote: > > On Apr 11, 2020, at 8:15 AM, Andrew Geissler > wrote: > > > Systemd Visualization > > > Another complicated area of OpenBMC is our systemd targets and services= . > Building on the upstream tools to visualize our systemd targets and > services would be useful to new people. > > > > +1 to visualization, and I have a few thoughts on this --- > > My lacking a mental model of how an OpenBMC system works had been my pain > point in the first few months working with OpenBMC (I=E2=80=99m a bit new= to this > area), so after learning the minimal set of survival skills I did somethi= ng > similar to what you mentioned =E2=80=93 visualizing the messages passed b= etween > different dbus peers (and conveniently, IPMI traffic, as IPMI-related dbu= s > messages exposing all IPMI payload comprise most of the dbus traffic on > that particular system I was working on.) > > > > I think packet analysis tools such as Wireshark and graphics frame > analysis tools such as RenderDoc, or system event-based Windows Performan= ce > tool like GPUView provide great examples of what people might expect to > achieve with a visualization tool: capture, inspect and (sometimes) > playback, across multiple layers in the software/hardware stack. Many > similar existing tools process sequences of events, and in this case of > BMCs, the events could be dbus messages. I found a prototype visualizer > made at work greatly helpful in explaining to new team members some basic > concepts and the IPMI stack on the BMC. > > > > The IPMI stack is interesting because it=E2=80=99s one noticeable workloa= d on the > particular BMC system I had been working on; in my current limited > understanding, having lots of I/O capability to connect to hundreds of > sensors is one of the many features that set apart a BMC chip and a > similarly powerful smartphone chip, and the broad use of dbus is what set= s > apart OpenBMC and the desktop Linux distro I had been using. I heard > optimization is best done workload by workload, perhaps this rationale > applies to visualization too? > > > > I realize I was mostly talking about visualizing the run-time state of th= e > system rather than build-time, but we could visualize the run-time aspect > of systemd units too since I have seen many times a dbus message eventual= ly > triggering a systemd target to acutate the system, so it would be good to > consider both dbus and systemd (and maybe other parts of the system?) to > have a more holistic view of the BMC=E2=80=99s operations. > > > > Thanks > > Sui > --00000000000085216705a3d53dc6 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

Thank you everyone for your suggestions.

Scanning through this it's clear that documentation is one of the big= gest most generally agreed upon area to work on.

B= uild tools and package management seems like another area with some agreed = on improvements. I like the idea of moving to meson. Getting tidy files and= revising our style guides also sound like good ideas. I also really agree = that we could stand to do some consolidation of processes/repos.

There is also some use for DBus tooling for both improved co= de, and for visualizations.

So here are my next st= eps:

=C2=A0 1) Since we have some new people getting started, I&#= 39;ve asked them to add documentation at the points they get stuck during o= n-boarding.

=C2=A0 2) I'm going to take the ideas in this thr= ead and put together a .md doc with any relevant=C2=A0information I can fin= d. I'll be adding it to openbmc/docs.

=C2=A0 3) I'll foll= ow up in another thread about some of the ideas around DBus tooling and pac= kage consolidation. That seems to be an area where most people agree some i= mprovements can be made, but I'm not sure there is an agreement on how = we should do it.

-Richard

On Mon, Apr 20, 2020 at 10:19 AM Sui Chen <suichen6@gmail.com> wrote:

> On Apr 11, 2020, at 8:15 AM, Andrew Geissler <geissonator a= t gmail.com> wrote:
> Systemd Visualiza= tion
> Another com= plicated area of OpenBMC is our systemd targets and services. Building on t= he upstream tools to visualize our systemd targets and services would be us= eful to new people.
=C2=A0
+1 to visualization, and I= have a few thoughts on this ---
My lacking a mental mode= l of how an OpenBMC system works had been my pain point in the first few mo= nths working with OpenBMC (I=E2=80=99m a bit new to this area), so after le= arning the minimal set of survival skills I did something similar to what y= ou mentioned =E2=80=93 visualizing the messages passed between different db= us peers (and conveniently, IPMI traffic, as IPMI-related dbus messages exp= osing all IPMI payload comprise most of the dbus traffic on that particular= system I was working on.)
<= span lang=3D"EN-US" style=3D"font-size:12pt">=C2=A0
I thi= nk packet analysis tools such as Wireshark and graphics frame analysis tool= s such as RenderDoc, or system event-based Windows Performance tool like GP= UView provide great examples of what people might expect to achieve with a = visualization tool: capture, inspect and (sometimes) playback, across multi= ple layers in the software/hardware stack. Many similar existing tools proc= ess sequences of events, and in this case of BMCs, the events could be dbus= messages. I found a prototype visualizer made at work greatly helpful in e= xplaining to new team members some basic concepts and the IPMI stack on the= BMC.
=C2=A0
The IPMI stack is interest= ing because it=E2=80=99s one noticeable workload on the particular BMC syst= em I had been working on; in my current limited understanding, having lots = of I/O capability to connect to hundreds of sensors is one of the many feat= ures that set apart a BMC chip and a similarly powerful smartphone chip, an= d the broad use of dbus is what sets apart OpenBMC and the desktop Linux di= stro I had been using. I heard optimization is best done workload by worklo= ad, perhaps this rationale applies to visualization too?
= =C2=A0
I realize I was mostly talking about visualizing t= he run-time state of the system rather than build-time, but we could visual= ize the run-time aspect of systemd units too since I have seen many times a= dbus message eventually triggering a systemd target to acutate the system,= so it would be good to consider both dbus and systemd (and maybe other par= ts of the system?) to have a more holistic view of the BMC=E2=80=99s operat= ions.
=C2=A0
Thanks
S= ui

--00000000000085216705a3d53dc6-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.helo=mga12.intel.com (client-ip=192.55.52.136; helo=mga12.intel.com; envelope-from=yong.b.li@linux.intel.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=linux.intel.com Received: from mga12.intel.com (mga12.intel.com [192.55.52.136]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 496Tdy5vyGzDqtQ for ; Wed, 22 Apr 2020 15:34:40 +1000 (AEST) IronPort-SDR: bp2bvF1Zdo5Q4r51/JMryhpZ4xSKWLFk4JEj/GjW6QLdEgKJTKqHXY0CHH8h6//BMfEEmvyvaU hsKTMm7PVkCw== X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga005.fm.intel.com ([10.253.24.32]) by fmsmga106.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 21 Apr 2020 22:34:38 -0700 IronPort-SDR: eDGDMkTobxYGHfCQu5in2KiTEz1TS/axllHg32htW2nqq8ACtEl/kgNxkadFuiXYtViAMADCGV KDcxL201J3CA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.72,412,1580803200"; d="scan'208,217";a="456373236" Received: from yongli3-mobl1.ccr.corp.intel.com (HELO [10.238.5.105]) ([10.238.5.105]) by fmsmga005.fm.intel.com with ESMTP; 21 Apr 2020 22:34:35 -0700 Subject: =?UTF-8?B?UmU6IGFib3V0IHBvd2VyIGNvbnRyb2wu5Zue5aSNOiBDYWxsIGZvciBH?= =?UTF-8?Q?ardening_Tasks?= To: "zhouyuanqing8@outlook.com" , Sui Chen , "openbmc@lists.ozlabs.org" Cc: "uperic@163.com" , "shinerocky@yahoo.com" References: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> From: "Li, Yong" Message-ID: <12c67029-2a01-13c6-de2e-9721d85c4ec7@linux.intel.com> Date: Wed, 22 Apr 2020 13:34:35 +0800 User-Agent: Mozilla/5.0 (Windows NT 10.0; WOW64; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: multipart/alternative; boundary="------------E565549C4BF89AD3993BC1AF" X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Apr 2020 05:34:48 -0000 This is a multi-part message in MIME format. --------------E565549C4BF89AD3993BC1AF Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Regarding the power control related, sugest to check on the below: https://github.com/openbmc/x86-power-control/blob/master/power-control-x86/src/power_control.cpp It uses litter systems related services/targets, and monitor these gpio signals, to trigger different callback actions. For the pgood_wait, it is in: https://github.com/openbmc/skeleton/tree/master/op-pwrctl/pgood_wait https://github.com/openbmc/skeleton/tree/master/op-pwrctl Thanks, Yong 在 4/21/2020 10:50 PM, zhouyuanqing8@outlook.com 写道: > Hi > > This is a very good idea. As the first time to do openbmc, I look > forward to it. Currently, I am being troubled by the problems you > describe. > > The following questions, please also help you answer it, thank you > very much. > > 1.I modified the dts file, how to use the command "bitbake -f > linux-aspeed" to Generate fitimage and dub？ > Now, I modify the dts file in the kernel source directory. When I > compile, bitbake will re-fetch the source code, decompress, patch, > configure, and compile, causing my changes to be overwritten. I > currently use manual call scripts to compile dts files and make images > for debugging.Is there a way to make bitbake skip the previous steps > and compile directly？ > > > 2.The size of image-rwfs is 0, I want to use rwfs debugging, how > to configure to generate a normal image-rwfs? > -rw-r--r--. 2 harleyzhou harleyzhou 9443 4月 7 17:27 > obmc-phosphor-image-xxh-20200407092558.rootfs.manifest > -rw-r--r--. 2 harleyzhou harleyzhou 18214912 4月 7 17:27 > obmc-phosphor-image-xxh-20200407092558.rootfs.squashfs-xz > -rw-rw-r--. 2 harleyzhou harleyzhou 33554432 4月 7 17:27 > obmc-phosphor-image-xxh-20200407092558.static.mtd > -rw-rw-r--. 2 harleyzhou harleyzhou 33566720 4月 7 17:28 > obmc-phosphor-image-xxh-20200407092558.static.mtd.all.tar > -rw-rw-r--. 2 harleyzhou harleyzhou 22384640 4月 7 17:28 > obmc-phosphor-image-xxh-20200407092558.static.mtd.tar > -rw-r--r--. 2 harleyzhou harleyzhou 308218 4月 7 17:27 > obmc-phosphor-image-xxh-20200407092558.testdata.json > -rw-r--r--. 2 harleyzhou harleyzhou 0 4月 7 17:27 > obmc-phosphor-image-xxh.jffs2 > > > 3. I did not find the source code of "pgood_wait" and > "power_control.exe" in obmc-op-control-power? where can I get it ? > > > 4.OpenBMC usessystemd > to manage all > processes, So i analyzed the process of systemd starting process and > saw "default.target-> basic.target-> sysinit.target-> > local-fs.target", there is no content behind.please help to provide > clues of systemd starting process. > > 5.I understand the following execution process of power-on , help > check if it is correct. > a).rest or busctl send power-on commands to systemd through > d-bus messages. > b).systemd find the obmc-chassis-poweron@.target > c).systemd find the obmc-power-start@.target > d).systemd find the op-power-start@0.service > e).systemd start a thread and execute "busctl call `mapper get-service > /org/openbmc/control/power%i` /org/openbmc/control/power%i > org.openbmc.control.Power setPowerState I 1" > > appendix： > > ls obmc-chassis-poweron@0.target.requires > > op-power-start@0.serviceop-wait-power-on@0.service > > > cat obmc-chassis-poweron@.target > > [Unit] > > Description=Chassis%i (Power On) > > Wants=multi-user.target > > After=multi-user.target > > Wants=mapper-wait@-xyz-openbmc_project-state-chassis%i.service > > After=mapper-wait@-xyz-openbmc_project-state-chassis%i.service > > Wants=mapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransition.service > > After=mapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransition.service > > > cat op-power-start@0.service > > [Unit] > > Description=Start Power%i > > Wants=obmc-power-start@%i.target > > Before=obmc-power-start@%i.target > > After=obmc-power-start-pre@%i.target > > After=obmc-fan-control.target > > Wants=mapper-wait@-org-openbmc-control-power%i.service > > After=mapper-wait@-org-openbmc-control-power%i.service > > [Service] > > RemainAfterExit=yes > > Type=oneshot > > ExecStart=/bin/sh -c "busctl call `mapper get-service > /org/openbmc/control/power%i` /org/openbmc/control/power%i > org.openbmc.control.Power setPowerState i 1" > > SyslogIdentifier=op-power-start > > [Install] > > WantedBy=obmc-host-start@%i.target > > > cat obmc-power-start@.target > > [Unit] > > Description=Power%i On > > After=obmc-power-start-pre@%i.target > > Wants=multi-user.target > > Conflicts=obmc-chassis-poweroff@%i.target > > RefuseManualStart=yes > > RefuseManualStop=yes > > > Thanks > Harley > ------------------------------------------------------------------------ > *发件人:* openbmc > 代表 Sui > Chen > *发送时间:* 2020年4月21日 1:05 > *收件人:* openbmc@lists.ozlabs.org > *主题:* Re: Call for Gardening Tasks > > > On Apr 11, 2020, at 8:15 AM, Andrew Geissler wrote: > > > Systemd Visualization > > > Another complicated area of OpenBMC is our systemd targets and services. Building on the upstream > tools to visualize our systemd targets and services would be useful to > new people. > > +1 to visualization, and I have a few thoughts on this --- > > My lacking a mental model of how an OpenBMC system works had been my > pain point in the first few months working with OpenBMC (I’m a bit new > to this area), so after learning the minimal set of survival skills I > did something similar to what you mentioned – visualizing the messages > passed between different dbus peers (and conveniently, IPMI traffic, > as IPMI-related dbus messages exposing all IPMI payload comprise most > of the dbus traffic on that particular system I was working on.) > > I think packet analysis tools such as Wireshark and graphics frame > analysis tools such as RenderDoc, or system event-based Windows > Performance tool like GPUView provide great examples of what people > might expect to achieve with a visualization tool: capture, inspect > and (sometimes) playback, across multiple layers in the > software/hardware stack. Many similar existing tools process sequences > of events, and in this case of BMCs, the events could be dbus > messages. I found a prototype visualizer made at work greatly helpful > in explaining to new team members some basic concepts and the IPMI > stack on the BMC. > > The IPMI stack is interesting because it’s one noticeable workload on > the particular BMC system I had been working on; in my current limited > understanding, having lots of I/O capability to connect to hundreds of > sensors is one of the many features that set apart a BMC chip and a > similarly powerful smartphone chip, and the broad use of dbus is what > sets apart OpenBMC and the desktop Linux distro I had been using. I > heard optimization is best done workload by workload, perhaps this > rationale applies to visualization too? > > I realize I was mostly talking about visualizing the run-time state of > the system rather than build-time, but we could visualize the run-time > aspect of systemd units too since I have seen many times a dbus > message eventually triggering a systemd target to acutate the system, > so it would be good to consider both dbus and systemd (and maybe other > parts of the system?) to have a more holistic view of the BMC’s > operations. > > Thanks > > Sui > --------------E565549C4BF89AD3993BC1AF Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: 8bit

Regarding the power control related, sugest to check on the below:

https://github.com/openbmc/x86-power-control/blob/master/power-control-x86/src/power_control.cpp

It uses litter systems related services/targets, and monitor these gpio signals, to trigger different callback actions.

For the pgood_wait, it is in:

https://github.com/openbmc/skeleton/tree/master/op-pwrctl/pgood_wait

https://github.com/openbmc/skeleton/tree/master/op-pwrctl

Thanks,

Yong

在 4/21/2020 10:50 PM, zhouyuanqing8@outlook.com 写道:

Hi

This is a very good idea. As the first time to do openbmc, I look forward to it. Currently, I am being troubled by the problems you describe.

  The following questions, please also help you answer it, thank you very much.

1.I modified the dts file, how to use the command "bitbake -f linux-aspeed" to Generate fitimage and dub？

Now, I modify the dts file in the kernel source directory. When I compile, bitbake will re-fetch the source code, decompress, patch, configure, and compile, causing my changes to be overwritten. I currently use manual call scripts to compile dts files and make images for debugging.Is there a way to make bitbake skip the previous steps and compile directly？

2.The size of image-rwfs is 0, I want to use rwfs debugging, how to configure to generate a normal image-rwfs?

-rw-r--r--. 2 harleyzhou harleyzhou 9443 4月 7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.manifest

-rw-r--r--. 2 harleyzhou harleyzhou 18214912 4月 7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.squashfs-xz

-rw-rw-r--. 2 harleyzhou harleyzhou 33554432 4月 7 17:27 obmc-phosphor-image-xxh-20200407092558.static.mtd

-rw-rw-r--. 2 harleyzhou harleyzhou 33566720 4月 7 17:28 obmc-phosphor-image-xxh-20200407092558.static.mtd.all.tar

-rw-rw-r--. 2 harleyzhou harleyzhou 22384640 4月 7 17:28 obmc-phosphor-image-xxh-20200407092558.static.mtd.tar

-rw-r--r--. 2 harleyzhou harleyzhou 308218 4月 7 17:27 obmc-phosphor-image-xxh-20200407092558.testdata.json

-rw-r--r--. 2 harleyzhou harleyzhou 0   4月 7 17:27 obmc-phosphor-image-xxh.jffs2

3. I did not find the source code of "pgood_wait" and "power_control.exe" in obmc-op-control-power? where can I get it ?

4.OpenBMC uses systemd to manage all processes, So i analyzed the process of systemd starting process and saw "default.target-> basic.target-> sysinit.target-> local-fs.target", there is no content behind.please help to provide clues of systemd starting process.

5.I understand the following execution process of power-on , help check if it is correct.

a).rest or busctl send power-on commands to systemd through d-bus messages.

b).systemd find the obmc-chassis-poweron@.target

c).systemd find the obmc-power-start@.target

d).systemd find the op-power-start@0.service

  e).systemd start a thread and execute "busctl call `mapper get-service /org/openbmc/control/power%i` /org/openbmc/control/power%i org.openbmc.control.Power setPowerState I 1"

appendix：

ls obmc-chassis-poweron@0.target.requires

op-power-start@0.service op-wait-power-on@0.service

cat obmc-chassis-poweron@.target

[Unit]

Description=Chassis%i (Power On)

Wants=multi-user.target

After=multi-user.target

Wants=mapper-wait@-xyz-openbmc_project-state-chassis%i.service

After=mapper-wait@-xyz-openbmc_project-state-chassis%i.service

Wants=mapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransition.service

After=mapper-subtree-remove@-xyz-openbmc\x5fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransition.service

cat op-power-start@0.service

[Unit]

Description=Start Power%i

Wants=obmc-power-start@%i.target

Before=obmc-power-start@%i.target

After=obmc-power-start-pre@%i.target

After=obmc-fan-control.target

Wants=mapper-wait@-org-openbmc-control-power%i.service

After=mapper-wait@-org-openbmc-control-power%i.service

[Service]

RemainAfterExit=yes

Type=oneshot

ExecStart=/bin/sh -c "busctl call `mapper get-service /org/openbmc/control/power%i` /org/openbmc/control/power%i org.openbmc.control.Power setPowerState i 1"

SyslogIdentifier=op-power-start

[Install]

WantedBy=obmc-host-start@%i.target

cat obmc-power-start@.target

[Unit]

Description=Power%i On

After=obmc-power-start-pre@%i.target

Wants=multi-user.target

Conflicts=obmc-chassis-poweroff@%i.target

RefuseManualStart=yes

RefuseManualStop=yes

Thanks

Harley

发件人: openbmc <openbmc-bounces+zhouyuanqing8=outlook.com@lists.ozlabs.org> 代表 Sui Chen <suichen6@gmail.com>
发送时间: 2020年4月21日 1:05
收件人: openbmc@lists.ozlabs.org <openbmc@lists.ozlabs.org>
主题: Re: Call for Gardening Tasks

> On Apr 11, 2020, at 8:15 AM, Andrew Geissler <geissonator at gmail.com> wrote:

> Systemd Visualization

> Another complicated area of OpenBMC is our systemd targets and services. Building on the upstream tools to visualize our systemd targets and services would be useful to new people.

+1 to visualization, and I have a few thoughts on this ---

My lacking a mental model of how an OpenBMC system works had been my pain point in the first few months working with OpenBMC (I’m a bit new to this area), so after learning the minimal set of survival skills I did something similar to what you mentioned – visualizing the messages passed between different dbus peers (and conveniently, IPMI traffic, as IPMI-related dbus messages exposing all IPMI payload comprise most of the dbus traffic on that particular system I was working on.)

I think packet analysis tools such as Wireshark and graphics frame analysis tools such as RenderDoc, or system event-based Windows Performance tool like GPUView provide great examples of what people might expect to achieve with a visualization tool: capture, inspect and (sometimes) playback, across multiple layers in the software/hardware stack. Many similar existing tools process sequences of events, and in this case of BMCs, the events could be dbus messages. I found a prototype visualizer made at work greatly helpful in explaining to new team members some basic concepts and the IPMI stack on the BMC.

The IPMI stack is interesting because it’s one noticeable workload on the particular BMC system I had been working on; in my current limited understanding, having lots of I/O capability to connect to hundreds of sensors is one of the many features that set apart a BMC chip and a similarly powerful smartphone chip, and the broad use of dbus is what sets apart OpenBMC and the desktop Linux distro I had been using. I heard optimization is best done workload by workload, perhaps this rationale applies to visualization too?

I realize I was mostly talking about visualizing the run-time state of the system rather than build-time, but we could visualize the run-time aspect of systemd units too since I have seen many times a dbus message eventually triggering a systemd target to acutate the system, so it would be good to consider both dbus and systemd (and maybe other parts of the system?) to have a more holistic view of the BMC’s operations.

Thanks

Sui

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Thank you for the help, I will test it.

=B7=A2=BC=FE=C8=CB: Konstan= tin Klubnichkin <kitsok@yandex-team.ru>
=B7=A2=CB=CD=CA=B1=BC=E4: 2020=C4=EA4=D4=C222=C8=D5 15:25
=CA=D5=BC=FE=C8=CB: zhouyuanqing8@outlook.com <zhouyuanqing8@outl= ook.com>; Sui Chen <suichen6@gmail.com>; openbmc@lists.ozlabs.org = <openbmc@lists.ozlabs.org>
=B3=AD=CB=CD: uperic@163.com <uperic@163.com>; shinerocky@yaho= o.com <shinerocky@yahoo.com>
=D6=F7=CC=E2: Re: about power control.=BB=D8=B8=B4: Call for Gardeni= ng Tasks

Hello!

I'll try to answer your question about rwfs image.

I had the same issue plus I wanted to be able to create some data in r= wfs segment.

Thus I've created obmc-phosphor-image.bbappend where I do the followin= g:

=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D= =3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D

RWFS_SIZE ?=3D "4194304"

OVERLAY_MKFS_OPTS =3D " --pad=3D${RWFS_SIZE}"

# Override JFFS image creation

do_generate_rwfs_static() {

rwdir=3D$(pwd)

rwdir=3D${rwdir}/jffs2

image=3Drwfs.jffs2

rm -rf $rwdir $image > /dev/null 2>&1

mkdir -p ${rwdir}/cow

rwdir=3D${rwdir}/cow

bbplain "DEBUG: Creating RWFS image "

mv ${IMAGE_ROOTFS}/rwfs/* ${rwdir}/

rm -rf ${IMAGE_ROOTFS}/rwfs

# Create necessary files, directories, etc in ${rwdir}

${JFFS2_RWFS_CMD} ${OVERLAY_MKFS_OPTS} ${OVERLAY_MKFS_OPTS} --squash-u= ids

}

At the end I have the normal JFFS2 image instead of empty.

Hope this can help.

21.04.2020, 18:24, "zhouyuanqing8@outlook.com" <zhouyuanq= ing8@outlook.com>:

Hi

This is a very good idea. As the first time to do openbmc, I = look forward to it. Currently, I am being troubled by the problems you desc= ribe.

  The following questions, please also help you answer it,= thank you very much.

1.I modified the dts file, how to use the command "bitba= ke -f linux-aspeed" to Generate fitimage and dub=A3=BF

Now, I modify the dts file in the kernel source di= rectory. When I compile, bitbake will re-fetch the source code, decompress,= patch, configure, and compile, causing my changes to be overwritten. I cur= rently use manual call scripts to compile dts files and make images for debugging.Is there a way to make bitbake skip the prev= ious steps and compile directly=A3=BF

2.The size of image-rwfs is 0, I want to use rwfs debug= ging, how to configure to generate a normal image-rwfs?

-rw-r--r--. 2 harleyzhou harleyzhou 9443 = 4=D4=C2 &nbs= p;7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.manifest
-rw-r--r--. 2 harleyzhou harleyzhou 18214912 = ; 4=D4=C2 7 17:27 obmc-phosphor-image-xxh-20200407092558.rootfs.squashfs-xz

-rw-rw-r--. 2 harleyzhou harleyzhou 33554432 = ; 4=D4=C2 7 17:27 obmc-phosphor-image-xxh-20200407092558.static.mtd

-rw-rw-r--. 2 harleyzhou harleyzhou 33566720 = ; 4=D4=C2 7 17:28 obmc-phosphor-image-xxh-20200407092558.static.mtd.all.tar

-rw-rw-r--. 2 harleyzhou harleyzhou 22384640 = ; 4=D4=C2 7 17:28 obmc-phosphor-image-xxh-20200407092558.static.mtd.tar

-rw-r--r--. 2 harleyzhou harleyzhou 308218 = 4=D4=C2 7 17:2= 7 obmc-phosphor-image-xxh-20200407092558.test= data.json

-rw-r--r--. 2 harleyzhou harleyzhou = 0   4=D4=C2 7 17:27 obmc-phos= phor-image-xxh.jffs2

3. I did not find the source code of "pgood_wait" a= nd "power_control.exe" in obmc-op-control-power? where can I get = it ?

4.Ope= nBMC uses systemd to manage all processes, So i analyzed the process of systemd starting p= rocess and saw "default.target-> basic.target-> sysinit.target-&= gt; local-fs.target", there is no content behind.please help to provid= e clues of systemd starting process.

5.I u= nderstand the following execution process of power-on , help check if it is= correct.

a).rest or busctl send power-on commands to syst= emd through d-bus messages.

b).systemd find the obmc-chassis-poweron@.target

c).systemd find the obmc-power-start@.t= arget

d).systemd find the op-power-start@0.service

  e).systemd start a thread and execute "busctl call `mappe= r get-service /org/openbmc/control/power%i` /org/openbmc/control/power%i or= g.openbmc.control.Power setPowerState I 1"=

appendix=A3=BA

ls obmc-chassis-powe= ron@0.target.requires

op= -power-start@0.service op-wait-power-on@0.service

cat obmc-chassis-poweron@.target =

[Unit]

Description=3DChassis%i (Power On)

Wants=3Dmulti-user.target

After=3Dmulti-user.target

Wants=3Dmapper-wait@-xyz-openbmc_pro= ject-state-chassis%i.service

After=3Dmapper-wait@-xyz-openbmc_pro= ject-state-chassis%i.service

Wants=3Dmapper-subtree-remove@-xyz-openbmc\x5= fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransitio= n.service

After=3Dmapper-subtree-remove@-xyz-openbmc\x5= fproject-software\x3Axyz.openbmc_project.Software.ActivationBlocksTransitio= n.service

cat op-power-start@0.service&nbs= p;

[Unit]

Description=3DStart Power%i

Wants=3Dobmc-power-start@%i.target

Before=3Dobmc-power-start@%i.target

After=3Dobmc-power-start-pre@%i.target

After=3Dobmc-fan-control.target

Wants=3Dmapper-wait@-org-openbmc-control-pow= er%i.service

After=3Dmapper-wait@-org-openbmc-control-pow= er%i.service

[Service]

RemainAfterExit=3Dyes

Type=3Doneshot

ExecStart=3D/bin/sh -c "busctl call `map= per get-service /org/openbmc/control/power%i` /org/openbmc/control/power%i = org.openbmc.control.Power setPowerState i 1"

SyslogIdentifier=3Dop-power-start

[Install]

WantedBy=3Dobmc-host-start@%i.target

cat obmc-power-start@.target

[Unit]

Description=3DPower%i On

After=3Dobmc-power-start-pre@%i.target

Wants=3Dmulti-user.target

Conflicts=3Dobmc-chassis-poweroff@%i.target
RefuseManualStart=3Dyes

RefuseManualStop=3Dyes

Thanks

Harley

=B7=A2=BC=FE=C8=CB: openbmc <openbmc-b= ounces+zhouyuanqing8=3Doutlook.com@lists.ozlabs.org> =B4=FA=B1= =ED Sui Chen <suichen6@gmail.com>
=B7=A2=CB=CD=CA=B1=BC=E4: 2020=C4=EA4=D4=C221=C8=D5 1:05 =CA=D5=BC=FE=C8=CB: openbmc@lists.ozlabs.org <openbmc@lists.ozlabs.org>
=D6=F7=CC=E2: Re: Call for Gardening Tasks

> On Apr 11, 2020, at 8:15 AM, Andrew Geissler <= geissonator at gmail.com> wrote:

> Systemd Visualization

> Another complicated area of OpenBMC is our system= d targets and services. Building on the upstream tools to visualize our sys= temd targets and services would be useful to new people.

+1 to visualization, and = I have a few thoughts on this ---

My lacking a mental model of = how an OpenBMC system works had been my pain point in the first few months = working with OpenBMC (I=A1=AFm a bit new to this area), so after learning t= he minimal set of survival skills I did something similar to what you mentioned C visualizing the messages passed between di= fferent dbus peers (and conveniently, IPMI traffic, as IPMI-related dbus me= ssages exposing all IPMI payload comprise most of the dbus traffic on that = particular system I was working on.)

I think packet analysis tools= such as Wireshark and graphics frame analysis tools such as RenderDoc, or = system event-based Windows Performance tool like GPUView provide great exam= ples of what people might expect to achieve with a visualization tool: capture, inspect and (sometimes) playba= ck, across multiple layers in the software/hardware stack. Many similar exi= sting tools process sequences of events, and in this case of BMCs, the even= ts could be dbus messages. I found a prototype visualizer made at work greatly helpful in explaining to new t= eam members some basic concepts and the IPMI stack on the BMC.

The IPMI stack is interesting= because it=A1=AFs one noticeable workload on the particular BMC system I h= ad been working on; in my current limited understanding, having lots of I/O= capability to connect to hundreds of sensors is one of the many features that set apart a BMC chip and a similarly powe= rful smartphone chip, and the broad use of dbus is what sets apart OpenBMC = and the desktop Linux distro I had been using. I heard optimization is best= done workload by workload, perhaps this rationale applies to visualization too?

I realize I was mostly talkin= g about visualizing the run-time state of the system rather than build-time= , but we could visualize the run-time aspect of systemd units too since I h= ave seen many times a dbus message eventually triggering a systemd target to acutate the system, so it would be good to = consider both dbus and systemd (and maybe other parts of the system?) to ha= ve a more holistic view of the BMC=A1=AFs operations.

Thanks

Sui

Best regards,

Konstantin Klubnichkin,

lead firmware engineer,

server hardware R&D group,

Yandex Moscow office.

tel: +7-903-510-33-33

--_000_HK2PR04MB3826D8BD926FE991F3764912FED20HK2PR04MB3826apcp_-- From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=gmail.com (client-ip=2607:f8b0:4864:20::335; helo=mail-ot1-x335.google.com; envelope-from=kurt.r.taylor@gmail.com; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=PNyPciPe; dkim-atps=neutral Received: from mail-ot1-x335.google.com (mail-ot1-x335.google.com [IPv6:2607:f8b0:4864:20::335]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits) server-digest SHA256) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 496hxq3w2NzDqpf for ; Thu, 23 Apr 2020 00:04:15 +1000 (AEST) Received: by mail-ot1-x335.google.com with SMTP id e26so2098408otr.2 for ; Wed, 22 Apr 2020 07:04:15 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:cc:references:from:message-id:date:user-agent :mime-version:in-reply-to:content-language:content-transfer-encoding; bh=oKDYuladfMHYv7YAajInk9lev4P7gtAmD0cywck/jwg=; b=PNyPciPekm2z6cGs1Q8HsJh+D6iKBtOzZoDdsdSpmaML6wXYo3sYXWLT+x0YAydAu1 M3WRk0e7ULEovzY9y+FF9DkEcc4kiN54HEiLDk8L/zB2dUbfDbJIaZuVMfEEgOvhwyQn 4v0/0lVviqn6Mbfswj/YBYKUl0VCopEu1ClkSfQyqCNcOOLRh1xzTWYFS9wEl5vN8Eyo rRTDs92QVwbi51T2K3cOuJ992lZ2TwytJvVXNUenH5CGKDPErdupOT0ExO+mA5hJ/DCK UQii/+3eqo646MwxwEvIfXmcKnJvci9/G+Mjz0dLF5itaIiPxx2PIzri7Ag502Qt2EfP KI8g== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:cc:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=oKDYuladfMHYv7YAajInk9lev4P7gtAmD0cywck/jwg=; b=LT1L6vCr+FZ425f+UPPmsb2sb8cIYeMJOG1OiaMkqsg10cCqCUm2P/kydkyGFEEsi/ 4ZhFWNBkbUD0aOpewSf7/TyxupxvsZeHWIOSGYM/vH5TD/AJJRtAFmc+78Xku68H3TTF gwsEY8DKoCnSx2xI6VEPyAQfXtamSvh4VGUHLxmp4+gV/Q9kMfHM2Jl7HyhEPmwUnE5p lrGKOLggSds5Yy1DXNwS6ixrLsDvHCHjGIYkeH1WM532DHHEJPua8+cgdZdv1ZbNhGJJ E3xpQgJyu2v70Bj+FNDAkFFTXIGyqp13Q00zKG42eCZp38xBD7qnq5NdtH8e6nO/azfv /rXA== X-Gm-Message-State: AGi0PuZ01Y51rMqDG3xHnl0ICYmUH9jiSGbsyIKNr9JjhzsH/XirLdMm 9kd1QaTsdAY1//IR95RQRY34fbpV X-Google-Smtp-Source: APiQypJIS/ym7EKNjbTxQNYHuXlS6BgpX/PuWv9y301ZUCrVWR8m8dUminlCVzmX7xJwGbaK2gC6CA== X-Received: by 2002:a9d:12f6:: with SMTP id g109mr18246980otg.0.1587564251141; Wed, 22 Apr 2020 07:04:11 -0700 (PDT) Received: from krtaylors-MacBook-Pro.local (072-182-100-019.res.spectrum.com. [72.182.100.19]) by smtp.gmail.com with ESMTPSA id h65sm1533188oth.34.2020.04.22.07.04.09 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Wed, 22 Apr 2020 07:04:09 -0700 (PDT) Subject: Re: Call for Gardening Tasks To: Richard Hanley Cc: "openbmc@lists.ozlabs.org" References: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> From: krtaylor Message-ID: Date: Wed, 22 Apr 2020 09:04:08 -0500 User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:68.0) Gecko/20100101 Thunderbird/68.7.0 MIME-Version: 1.0 In-Reply-To: Content-Type: text/plain; charset=utf-8; format=flowed Content-Language: en-US Content-Transfer-Encoding: 8bit X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Apr 2020 14:04:15 -0000 On 4/21/20 6:18 PM, Richard Hanley wrote: > Thank you everyone for your suggestions. > > Scanning through this it's clear that documentation is one of the > biggest most generally agreed upon area to work on. > > Build tools and package management seems like another area with some > agreed on improvements. I like the idea of moving to meson. Getting tidy > files and revising our style guides also sound like good ideas. I also > really agree that we could stand to do some consolidation of > processes/repos. > > There is also some use for DBus tooling for both improved code, and for > visualizations. > > So here are my next steps: > 1) Since we have some new people getting started, I've asked them to > add documentation at the points they get stuck during on-boarding. > 2) I'm going to take the ideas in this thread and put together a .md > doc with any relevant information I can find. I'll be adding it to > openbmc/docs. That would work, but I would also suggest a wiki page. Docs have a tendency to get stale quickly, where a wiki page has a lower pain point for a small changes. I can get that started if it would help. Kurt Taylor (krtaylor) > 3) I'll follow up in another thread about some of the ideas around > DBus tooling and package consolidation. That seems to be an area where > most people agree some improvements can be made, but I'm not sure there > is an agreement on how we should do it. > > -Richard > > > > On Mon, Apr 20, 2020 at 10:19 AM Sui Chen > wrote: > > > On Apr 11, 2020, at 8:15 AM, Andrew Geissler > wrote: > > > Systemd Visualization > > > Another complicated area of OpenBMC is our systemd targets and services. Building on the upstream tools to visualize our systemd targets and services would be useful to new people. > > __ __ > > +1 to visualization, and I have a few thoughts on this ---____ > > My lacking a mental model of how an OpenBMC system works had been my > pain point in the first few months working with OpenBMC (I’m a bit > new to this area), so after learning the minimal set of survival > skills I did something similar to what you mentioned – visualizing > the messages passed between different dbus peers (and conveniently, > IPMI traffic, as IPMI-related dbus messages exposing all IPMI > payload comprise most of the dbus traffic on that particular system > I was working on.)____ > > __ __ > > I think packet analysis tools such as Wireshark and graphics frame > analysis tools such as RenderDoc, or system event-based Windows > Performance tool like GPUView provide great examples of what people > might expect to achieve with a visualization tool: capture, inspect > and (sometimes) playback, across multiple layers in the > software/hardware stack. Many similar existing tools process > sequences of events, and in this case of BMCs, the events could be > dbus messages. I found a prototype visualizer made at work greatly > helpful in explaining to new team members some basic concepts and > the IPMI stack on the BMC.____ > > __ __ > > The IPMI stack is interesting because it’s one noticeable workload > on the particular BMC system I had been working on; in my current > limited understanding, having lots of I/O capability to connect to > hundreds of sensors is one of the many features that set apart a BMC > chip and a similarly powerful smartphone chip, and the broad use of > dbus is what sets apart OpenBMC and the desktop Linux distro I had > been using. I heard optimization is best done workload by workload, > perhaps this rationale applies to visualization too?____ > > __ __ > > I realize I was mostly talking about visualizing the run-time state > of the system rather than build-time, but we could visualize the > run-time aspect of systemd units too since I have seen many times a > dbus message eventually triggering a systemd target to acutate the > system, so it would be good to consider both dbus and systemd (and > maybe other parts of the system?) to have a more holistic view of > the BMC’s operations.____ > > __ __ > > Thanks____ > > Sui____ > From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=aj.id.au (client-ip=66.111.4.28; helo=out4-smtp.messagingengine.com; envelope-from=andrew@aj.id.au; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=aj.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=aj.id.au header.i=@aj.id.au header.a=rsa-sha256 header.s=fm2 header.b=uPsY6/K6; dkim=pass (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm2 header.b=K8MFie4O; dkim-atps=neutral Received: from out4-smtp.messagingengine.com (out4-smtp.messagingengine.com [66.111.4.28]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4973Dn0q5PzDqwB for ; Thu, 23 Apr 2020 13:48:24 +1000 (AEST) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.nyi.internal (Postfix) with ESMTP id 78B3B5C028A; Wed, 22 Apr 2020 23:48:21 -0400 (EDT) Received: from imap25 ([10.202.2.75]) by compute3.internal (MEProxy); Wed, 22 Apr 2020 23:48:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aj.id.au; h= mime-version:message-id:in-reply-to:references:date:from:to:cc :subject:content-type:content-transfer-encoding; s=fm2; bh=dqhB4 u2mYmbl3WP2ZrGFlEEt29pugGZP43tvXXSrbtg=; b=uPsY6/K6RGLkIQUE3sFZf NTw0fRA0EnhFQ+UqKXVpA3KDdkRdJedHo7nJ0UeCdcf5XZkxY4wh/ud7TXWMKH+R T/VyOSg9GpmMiam4rgp0qYQ8v67uhLHPOi4XBUN89xFRXkZ7ypxHvwsXwwrOpETI HQ7b9Tmf6F7CTjq75QZrCdcNloD4FXpwH7VOgbv43P445w7UIyIfwb5XHZTBN5/A 9/IAGFIdNZqp375QJTcoDU30XafDG7QNaWnBiBbEtqVElWkGQnaDnUQgUmv7h/C+ 8tYk2erEBgA2qrtS1E8P4D4vNw0h9p2SxXBHyRVV1z2s8s84DX6wrmNjR6fmCZ9q A== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:content-type :date:from:in-reply-to:message-id:mime-version:references :subject:to:x-me-proxy:x-me-proxy:x-me-sender:x-me-sender :x-sasl-enc; s=fm2; bh=dqhB4u2mYmbl3WP2ZrGFlEEt29pugGZP43tvXXSrb tg=; b=K8MFie4O7FcSc52iv1zjc08kXtlnnt7oTlQxH0O9OXWi+fxaueKVWH9U7 HKj4WpEJyPpuA8ENd/mCMqfkjYq0gDGAEskfAnEwkVyc5d9+KUyuypx5WbMb4oxZ A9SSauxkSVNofhcYqP82XGgcFYYyFEWmwsJFbTSYF7AeLJK67od0RgSLipQfJFez 8PsTbKzBmYOt0aOkkQf2w/j4k76R2WCrY118jlX1EHDv6Jyn6vmvGQHV5S26I5c9 cULn6vWfmm1FFccpjWxTDIeG+cXHlC1peIAVkAX46wU9T+SxH/p3ThhNT1qtC04p nPbRRPQ3OWtO/L9A4gKDx5yIFn7zw== X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrgeekgdejudcutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefofgggkfgjfhffhffvufgtgfesthhqredtreerjeenucfhrhhomhepfdetnhgu rhgvficulfgvfhhfvghrhidfuceorghnughrvgifsegrjhdrihgurdgruheqnecuffhomh grihhnpeihohgtthhophhrohhjvggtthdrohhrghenucevlhhushhtvghrufhiiigvpedt necurfgrrhgrmhepmhgrihhlfhhrohhmpegrnhgurhgvfiesrghjrdhiugdrrghu X-ME-Proxy:

Received: by mailuser.nyi.internal (Postfix, from userid 501) id 8AA24BC00C3; Wed, 22 Apr 2020 23:48:20 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.3.0-dev0-351-g9981f4f-fmstable-20200421v1 Mime-Version: 1.0 Message-Id: <1e8ef9af-f417-46ec-b657-2997c4b4beac@www.fastmail.com> In-Reply-To: References: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> Date: Thu, 23 Apr 2020 13:18:55 +0930 From: "Andrew Jeffery" To: "zhouyuanqing8@outlook.com" , "Sui Chen" , "openbmc@lists.ozlabs.org" Cc: "uperic@163.com" , "shinerocky@yahoo.com" Subject: =?UTF-8?Q?Re:_about_power_control.=E5=9B=9E=E5=A4=8D:_Call_for_Gardening?= =?UTF-8?Q?_Tasks?= Content-Type: text/plain;charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Apr 2020 03:48:25 -0000 On Wed, 22 Apr 2020, at 00:20, zhouyuanqing8@outlook.com wrote: > Hi=20 >=20 > This is a very good idea. As the first time to do openbmc, I look=20 > forward to it. Currently, I am being troubled by the problems you=20 > describe. >=20 > The following questions, please also help you answer it, thank you ve= ry much. >=20 > 1.I modified the dts file, how to use the command "bitbake -f=20 > linux-aspeed" to Generate fitimage and dub=EF=BC=9F > Now, I modify the dts file in the kernel source directory. When I=20 > compile, bitbake will re-fetch the source code, decompress, patch,=20 > configure, and compile, causing my changes to be overwritten. I=20 > currently use manual call scripts to compile dts files and make images= =20 > for debugging.Is there a way to make bitbake skip the previous steps=20= > and compile directly=EF=BC=9F Two approaches here: 1. Use `devtool`[1], (`devtool modify linux-aspeed`), and then hack on the source that gets extracted 2. Use your own fork of the kernel hack the linux-aspeed recipe to point= to your local repo. [1] https://www.yoctoproject.org/docs/2.0/dev-manual/dev-manual.html#dev= -modifying-source-code Diverging further, you can just build your own kernel out of your kernel= source tree and netboot it on the BMC (either hardware or qemu). It depends on what your needs are, but netbooting is great for doing kernel= development and testing (as opposed to building images to be deployed). >=20 >=20 > 2.The size of image-rwfs is 0, I want to use rwfs debugging, how to=20= > configure to generate a normal image-rwfs?=20 > -rw-r--r--. 2 harleyzhou harleyzhou 9443 4=E6=9C=88 7 17:27=20 > obmc-phosphor-image-xxh-20200407092558.rootfs.manifest > -rw-r--r--. 2 harleyzhou harleyzhou 18214912 4=E6=9C=88 7 17:27=20 > obmc-phosphor-image-xxh-20200407092558.rootfs.squashfs-xz > -rw-rw-r--. 2 harleyzhou harleyzhou 33554432 4=E6=9C=88 7 17:27=20 > obmc-phosphor-image-xxh-20200407092558.static.mtd > -rw-rw-r--. 2 harleyzhou harleyzhou 33566720 4=E6=9C=88 7 17:28=20 > obmc-phosphor-image-xxh-20200407092558.static.mtd.all.tar > -rw-rw-r--. 2 harleyzhou harleyzhou 22384640 4=E6=9C=88 7 17:28=20 > obmc-phosphor-image-xxh-20200407092558.static.mtd.tar > -rw-r--r--. 2 harleyzhou harleyzhou 308218 4=E6=9C=88 7 17:27=20 > obmc-phosphor-image-xxh-20200407092558.testdata.json > -rw-r--r--. 2 harleyzhou harleyzhou 0 4=E6=9C=88 7 17:27=20 > obmc-phosphor-image-xxh.jffs2 As long as the flash partition is erased jffs2 will be happy to mount it= , so depending on your circumstances you may not need any data in image-rwfs. Hope that helps, Andrew From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Authentication-Results: lists.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=aj.id.au (client-ip=64.147.123.25; helo=wout2-smtp.messagingengine.com; envelope-from=andrew@aj.id.au; receiver=) Authentication-Results: lists.ozlabs.org; dmarc=none (p=none dis=none) header.from=aj.id.au Authentication-Results: lists.ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=aj.id.au header.i=@aj.id.au header.a=rsa-sha256 header.s=fm2 header.b=g4Z+M24g; dkim=pass (2048-bit key; unprotected) header.d=messagingengine.com header.i=@messagingengine.com header.a=rsa-sha256 header.s=fm2 header.b=zCXbpNvA; dkim-atps=neutral Received: from wout2-smtp.messagingengine.com (wout2-smtp.messagingengine.com [64.147.123.25]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id 4973SG3H0TzDqwt for ; Thu, 23 Apr 2020 13:58:21 +1000 (AEST) Received: from compute3.internal (compute3.nyi.internal [10.202.2.43]) by mailout.west.internal (Postfix) with ESMTP id 4219E6DC; Wed, 22 Apr 2020 23:58:18 -0400 (EDT) Received: from imap25 ([10.202.2.75]) by compute3.internal (MEProxy); Wed, 22 Apr 2020 23:58:18 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=aj.id.au; h= mime-version:message-id:in-reply-to:references:date:from:to :subject:content-type; s=fm2; bh=p+m/+UPttgZQXTr5AmYDtMbbP0ENlQm aduo5RsQ+1T0=; b=g4Z+M24g8gW+6N24pzNS1+stAlDIVCc0S3hUQ0E6BROrq2p ccMWAcs91OHonAK/lxFeR9A8vitKOigyhhFg7Ba390Y9c/+XliI6FtnweCdJ2GUo QW7gwChKWzAWqMyy4TZQbmW1ALvOc0ArOsgSI9ayaj8p62E6Fy1xaCjtUcAlPiPF kzrrWVpmaJcSoLVqQi+e2q8s1jfLHLgtPYLgnRHa2G86DqiQWjDVwAOa6tKqgnPg 9c0F6I4Dc7UScExgQI/XUDNA6b3YkaUcTb48DHjUz1TxkHFf5dpyW0EB480s42OK oHfkIqN1gLiX7hRU/pqn+B4+vj8YT5UkdImzJ2w== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to:x-me-proxy :x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s=fm2; bh=p+m/+U PttgZQXTr5AmYDtMbbP0ENlQmaduo5RsQ+1T0=; b=zCXbpNvAaEryX/CzaNPV+x j87/vi9GnZgcC5VDL1JT+DHBShP/CLY2MyWreKt/D5M8TWLtnXr7qXHAsrNe/8TF 22r+GYH9clp3lhlmOZnSJzHPjAg/DjA5YXlUANf0DIarQhus+5N1AX4jsW53evXl P8KdvwKk+ePQEUn3TXry7b2hz6cnl1iWeyZk/ZEMtXzZl9jKHZ0/Gd6zgMk/SdBk 7RwYv4en2jYsQ2FL2uLJo/Xgr6R86k3rbiE9j3yYHQaRTXU+PLftpvfjmXk4ATeD JWBR7YqdtrfKE02cncNXaIvxlLXsPVHF/KUG3WzZ95QHbHVqAlDn1btc0X4cHaSw == X-ME-Sender: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgeduhedrgeekgdejfecutefuodetggdotefrodftvf curfhrohhfihhlvgemucfhrghsthforghilhdpqfgfvfdpuffrtefokffrpgfnqfghnecu uegrihhlohhuthemuceftddtnecusecvtfgvtghiphhivghnthhsucdlqddutddtmdenuc fjughrpefofgggkfgjfhffhffvufgtsehttdertderredtnecuhfhrohhmpedftehnughr vgifucflvghffhgvrhihfdcuoegrnhgurhgvfiesrghjrdhiugdrrghuqeenucffohhmrg hinhepghhithhhuhgsrdgtohhmnecuvehluhhsthgvrhfuihiivgeptdenucfrrghrrghm pehmrghilhhfrhhomheprghnughrvgifsegrjhdrihgurdgruh X-ME-Proxy:

Received: by mailuser.nyi.internal (Postfix, from userid 501) id 37A68BC00C3; Wed, 22 Apr 2020 23:58:17 -0400 (EDT) X-Mailer: MessagingEngine.com Webmail Interface User-Agent: Cyrus-JMAP/3.3.0-dev0-351-g9981f4f-fmstable-20200421v1 Mime-Version: 1.0 Message-Id: In-Reply-To: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> References: <5e9dd66f.1c69fb81.45fc6.0118@mx.google.com> Date: Thu, 23 Apr 2020 13:28:51 +0930 From: "Andrew Jeffery" To: "Sui Chen" , "openbmc@lists.ozlabs.org" Subject: Re: Call for Gardening Tasks Content-Type: text/plain X-BeenThere: openbmc@lists.ozlabs.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Development list for OpenBMC List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 23 Apr 2020 03:58:23 -0000 On Tue, 21 Apr 2020, at 02:35, Sui Chen wrote: > > On Apr 11, 2020, at 8:15 AM, Andrew Geissler wrote: > > > > I think packet analysis tools such as Wireshark and graphics frame > analysis tools such as RenderDoc, or system event-based Windows > Performance tool like GPUView provide great examples of what people > might expect to achieve with a visualization tool: capture, inspect and > (sometimes) playback, across multiple layers in the software/hardware > stack. Many similar existing tools process sequences of events, and in > this case of BMCs, the events could be dbus messages. I found a > prototype visualizer made at work greatly helpful in explaining to new > team members some basic concepts and the IPMI stack on the BMC. > Not really a visualisation tool, but I'm going to plug my dbus pcap parser here - it's helped me analyse a number of silly problems of dbus interactions between a number of applications: https://github.com/openbmc/openbmc-tools/blob/master/amboar/obmc-scripts/dbus-pcap/dbus-pcap It desperately needs a README, but you can slice and dice `busctl capture` output with DBus filter specifications, and if you like dump the output as json for further processing. Andrew