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From: Tao Zhou <tao.zhou@linux.dev>
To: Daniel Bristot de Oliveira <bristot@kernel.org>
Cc: Steven Rostedt <rostedt@goodmis.org>,
	Ingo Molnar <mingo@redhat.com>, Tom Zanussi <zanussi@kernel.org>,
	Masami Hiramatsu <mhiramat@kernel.org>,
	Juri Lelli <juri.lelli@redhat.com>,
	Clark Williams <williams@redhat.com>,
	John Kacur <jkacur@redhat.com>,
	Peter Zijlstra <peterz@infradead.org>,
	Thomas Gleixner <tglx@linutronix.de>,
	Sebastian Andrzej Siewior <bigeasy@linutronix.de>,
	Tao Zhou <tao.zhou@linux.dev>,
	linux-rt-users@vger.kernel.org,
	linux-trace-devel@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [PATCH V8 00/14] RTLA: An interface for osnoise/timerlat tracers
Date: Sat, 4 Dec 2021 21:25:09 +0800	[thread overview]
Message-ID: <YatsNcmqxnMZ5ONS@geo.homenetwork> (raw)
In-Reply-To: <cover.1638182284.git.bristot@kernel.org>

On Mon, Nov 29, 2021 at 12:07:38PM +0100, Daniel Bristot de Oliveira wrote:

> The rtla(1) is a meta-tool that includes a set of commands that
> aims to analyze the real-time properties of Linux. But instead of
> testing Linux as a black box, rtla leverages kernel tracing
> capabilities to provide precise information about the properties
> and root causes of unexpected results.
> 
> To start, it presents an interface to the osnoise and timerlat tracers.
> In the future, it will also serve as home to the rtsl [1] and other
> latency/noise tracers.
> 
> If you just want to run it, you can download the tarball here:
>   - https://bristot.me/files/rtla/tarball/rtla-0.4.tar.bz2
> 
> To compile rtla on fedora you need:
>   $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtraceevent.git
>   $ cd libtraceevent/
>   $ make
>   $ sudo make install
>   $ cd ..
>   $ git clone git://git.kernel.org/pub/scm/libs/libtrace/libtracefs.git
>   $ cd libtracefs/
>   $ make
>   $ sudo make install
>   $ cd ..
>   $ sudo dnf install python3-docutils procps-devel
>   $ cd $rtla_src
>   $ make
>   $ sudo make install

Set osnoise/x to DEADLINE, the return is not success. see:

tao@geo ~/opensource/rtla-0.4 $ sudo rtla osnoise top -P d:100us:1ms -c 0-3 -r 900000 -d 1M -q
boost_with_deadline failed to boost pid 4766: Operation not permitted
Failed to set sched parameters

top shows:

  PID USER      PR  NI    VIRT    RES    SHR S  %CPU  %MEM     TIME+ COMMAND         
 4773 root      20   0       0      0      0 R  89.4   0.0   2:06.88 osnoise/0       
 4776 root      20   0       0      0      0 R  89.4   0.0   2:06.88 osnoise/3       
 4774 root      20   0       0      0      0 R  89.0   0.0   2:06.88 osnoise/1       
 4775 root      20   0       0      0      0 R  88.7   0.0   2:06.69 osnoise/2       

 t

  parent reply	other threads:[~2021-12-04 13:25 UTC|newest]

Thread overview: 29+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-11-29 11:07 [PATCH V8 00/14] RTLA: An interface for osnoise/timerlat tracers Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 01/14] rtla: Real-Time Linux Analysis tool Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 02/14] rtla: Helper functions for rtla Daniel Bristot de Oliveira
2021-12-03  9:07   ` Tao Zhou
2021-12-03 14:52     ` Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 03/14] rtla: Add osnoise tool Daniel Bristot de Oliveira
2021-11-30 15:35   ` Tao Zhou
2021-12-02 15:18     ` Daniel Bristot de Oliveira
2021-12-08 22:14       ` Steven Rostedt
2021-12-08 22:13   ` Steven Rostedt
2021-12-09 16:15     ` Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 04/14] rtla/osnoise: Add osnoise top mode Daniel Bristot de Oliveira
2021-12-04 18:04   ` Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 05/14] rtla/osnoise: Add the hist mode Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 06/14] rtla: Add timerlat tool and timelart top mode Daniel Bristot de Oliveira
2021-12-03  9:13   ` Tao Zhou
2021-12-03 17:41     ` Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 07/14] rtla/timerlat: Add timerlat hist mode Daniel Bristot de Oliveira
2021-12-03  9:17   ` Tao Zhou
2021-12-03 17:42     ` Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 08/14] rtla: Add Documentation Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 09/14] rtla: Add rtla osnoise man page Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 10/14] rtla: Add rtla osnoise top documentation Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 11/14] rtla: Add rtla osnoise hist documentation Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 12/14] rtla: Add rtla timerlat documentation Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 13/14] rtla: Add rtla timerlat top documentation Daniel Bristot de Oliveira
2021-11-29 11:07 ` [PATCH V8 14/14] rtla: Add rtla timerlat hist documentation Daniel Bristot de Oliveira
2021-12-04 13:25 ` Tao Zhou [this message]
2021-12-04 14:16   ` [PATCH V8 00/14] RTLA: An interface for osnoise/timerlat tracers Daniel Bristot de Oliveira

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