lttng-dev.lists.lttng.org archive mirror
 help / color / mirror / Atom feed
From: Milian Wolff <milian.wolff@kdab.com>
To: lttng-dev@lists.lttng.org
Subject: tracing page_faults with lttng?
Date: Wed, 24 May 2017 18:00:47 +0200	[thread overview]
Message-ID: <1807360.trHWC9KRqs__41028.421073179$1495642666$gmane$org@milian-kdab2> (raw)


[-- Attachment #1.1: Type: text/plain, Size: 966 bytes --]

Hey all,

when I trace with perf, I can see page_faults occurring. But when I do 
something like the following with lttng:

lttng create
lttng enable-channel kernel -k
lttng enable-event -c kernel -k -a
lttng start
# trigger page faults
lttng stop

then I do not see any page faults in tracecompass/babeltrace. What do I need 
to do to see those too? I'm aware that lttng comes with its own set of 
tracepoints - i.e. it's not using the same tracepoints that perf knows about. 
But googling shows me e.g. this:

https://lists.lttng.org/pipermail/lttng-dev/2013-April/019954.html
https://lists.lttng.org/pipermail/lttng-dev/2016-May/026033.html

Which sounds like the feature should be available in lttng too?

I'm using the ArchLinux packages in AUR, i.e. version 2.9.2 of LTTng and 
kernel 4.10.13-1.

Thanks
-- 
Milian Wolff | milian.wolff@kdab.com | Software Engineer
KDAB (Deutschland) GmbH&Co KG, a KDAB Group company
Tel: +49-30-521325470
KDAB - The Qt Experts

[-- Attachment #1.2: smime.p7s --]
[-- Type: application/pkcs7-signature, Size: 3826 bytes --]

[-- Attachment #2: Type: text/plain, Size: 156 bytes --]

_______________________________________________
lttng-dev mailing list
lttng-dev@lists.lttng.org
https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev

             reply	other threads:[~2017-05-24 16:10 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-05-24 16:00 Milian Wolff [this message]
     [not found] <1807360.trHWC9KRqs@milian-kdab2>
2017-05-24 16:26 ` tracing page_faults with lttng? Francis Deslauriers
     [not found] ` <CADcCL0i-gZHviy_QZq_Krj_2zXiYvF-Z8BLu-3uQyA0anBfO-g@mail.gmail.com>
2017-05-29  8:44   ` Milian Wolff
     [not found]   ` <2312247.5OrstNElbn@milian-kdab2>
2019-10-12 21:31     ` Milian Wolff via lttng-dev
     [not found]     ` <3174598.JndGstr8t1@agathebauer>
2019-11-02 15:31       ` Milian Wolff via lttng-dev
     [not found]       ` <5848055.rMpeChdSCL@agathebauer>
2019-11-04 15:55         ` Francis Deslauriers

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='1807360.trHWC9KRqs__41028.421073179$1495642666$gmane$org@milian-kdab2' \
    --to=milian.wolff@kdab.com \
    --cc=lttng-dev@lists.lttng.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).