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[23.128.96.18]) by mx.google.com with ESMTP id b5si33298496ejb.4.2021.10.27.05.17.09; Wed, 27 Oct 2021 05:18:39 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) client-ip=23.128.96.18; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 23.128.96.18 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239976AbhJZWMK convert rfc822-to-8bit (ORCPT + 99 others); Tue, 26 Oct 2021 18:12:10 -0400 Received: from us-smtp-delivery-44.mimecast.com ([207.211.30.44]:40891 "EHLO us-smtp-delivery-44.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239980AbhJZWLh (ORCPT ); Tue, 26 Oct 2021 18:11:37 -0400 Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-255-5an5Lcf1NC63eHoYkHvh8w-1; Tue, 26 Oct 2021 18:09:08 -0400 X-MC-Unique: 5an5Lcf1NC63eHoYkHvh8w-1 Received: from smtp.corp.redhat.com (int-mx02.intmail.prod.int.phx2.redhat.com [10.5.11.12]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 94AAE10247A7; Tue, 26 Oct 2021 22:09:06 +0000 (UTC) Received: from x1.com (unknown [10.22.32.3]) by smtp.corp.redhat.com (Postfix) with ESMTP id 8F50A60BF1; Tue, 26 Oct 2021 22:09:02 +0000 (UTC) From: Daniel Bristot de Oliveira To: Steven Rostedt Cc: Tao Zhou , Daniel Bristot de Oliveira , Ingo Molnar , Tom Zanussi , Masami Hiramatsu , Juri Lelli , Clark Williams , John Kacur , Peter Zijlstra , Thomas Gleixner , Sebastian Andrzej Siewior , linux-rt-users@vger.kernel.org, linux-trace-devel@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH V6 17/20] rtla: Add rtla osnoise hist documentation Date: Wed, 27 Oct 2021 00:06:28 +0200 Message-Id: In-Reply-To: References: MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.12 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=bristot@kernel.org X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: kernel.org Content-Transfer-Encoding: 8BIT Content-Type: text/plain; charset=WINDOWS-1252 Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Man page for rtla osnoise hist mode. Cc: Steven Rostedt Cc: Ingo Molnar Cc: Tom Zanussi Cc: Masami Hiramatsu Cc: Juri Lelli Cc: Clark Williams Cc: John Kacur Cc: Peter Zijlstra Cc: Thomas Gleixner Cc: Sebastian Andrzej Siewior Cc: Daniel Bristot de Oliveira Cc: linux-rt-users@vger.kernel.org Cc: linux-trace-devel@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Daniel Bristot de Oliveira --- .../tools/rtla/common_hist_options.rst | 23 +++++++ .../tools/rtla/rtla-osnoise-hist.rst | 66 +++++++++++++++++++ 2 files changed, 89 insertions(+) create mode 100644 Documentation/tools/rtla/common_hist_options.rst create mode 100644 Documentation/tools/rtla/rtla-osnoise-hist.rst diff --git a/Documentation/tools/rtla/common_hist_options.rst b/Documentation/tools/rtla/common_hist_options.rst new file mode 100644 index 000000000000..0266cd08a6c9 --- /dev/null +++ b/Documentation/tools/rtla/common_hist_options.rst @@ -0,0 +1,23 @@ +**-b**, **--bucket-size** *N* + + Set the histogram bucket size (default *1*). + +**-e**, **--entries** *N* + + Set the number of entries of the histogram (default 256). + +**--no-header** + + Do not print header. + +**--no-summary** + + Do not print summary. + +**--no-index** + + Do not print index. + +**--with-zeros** + + Print zero only entries. diff --git a/Documentation/tools/rtla/rtla-osnoise-hist.rst b/Documentation/tools/rtla/rtla-osnoise-hist.rst new file mode 100644 index 000000000000..52298ddd8701 --- /dev/null +++ b/Documentation/tools/rtla/rtla-osnoise-hist.rst @@ -0,0 +1,66 @@ +=================== +rtla-osnoise-hist +=================== +------------------------------------------------------ +Display a histogram of the osnoise tracer samples +------------------------------------------------------ + +:Manual section: 1 + +SYNOPSIS +======== +**rtla osnoise hist** [*OPTIONS*] + +DESCRIPTION +=========== +.. include:: common_osnoise_description.rst + +The **rtla osnoise hist** tool collects all **osnoise:sample_threshold** +occurrence in a histogram, displaying the results in a user-friendly way. +The tool also allows many configurations of the *osnoise* tracer and the +collection of the tracer output. + +OPTIONS +======= +.. include:: common_osnoise_options.rst + +.. include:: common_hist_options.rst + +.. include:: common_options.rst + +EXAMPLE +======= +In the example below, *osnoise* tracer threads are set to run with real-time +priority *FIFO:1*, on CPUs *0-11*, for *900ms* at each period (*1s* by +default). The reason for reducing the runtime is to avoid starving the +**rtla** tool. The tool is also set to run for *one minute*. The output +histogram is set to group outputs in buckets of *10us* and *25* entries:: + + [root@f34 ~/]# rtla osnoise hist -P F:1 -c 0-11 -r 900000 -d 1M -b 10 -e 25 + # RTLA osnoise histogram + # Time unit is microseconds (us) + # Duration: 0 00:01:00 + Index CPU-000 CPU-001 CPU-002 CPU-003 CPU-004 CPU-005 CPU-006 CPU-007 CPU-008 CPU-009 CPU-010 CPU-011 + 0 42982 46287 51779 53740 52024 44817 49898 36500 50408 50128 49523 52377 + 10 12224 8356 2912 878 2667 10155 4573 18894 4214 4836 5708 2413 + 20 8 5 12 2 13 24 20 41 29 53 39 39 + 30 1 1 0 0 10 3 6 19 15 31 30 38 + 40 0 0 0 0 0 4 2 7 2 3 8 11 + 50 0 0 0 0 0 0 0 0 0 1 1 2 + over: 0 0 0 0 0 0 0 0 0 0 0 0 + count: 55215 54649 54703 54620 54714 55003 54499 55461 54668 55052 55309 54880 + min: 0 0 0 0 0 0 0 0 0 0 0 0 + avg: 0 0 0 0 0 0 0 0 0 0 0 0 + max: 30 30 20 20 30 40 40 40 40 50 50 50 + +SEE ALSO +======== +**rtla-osnoise**\(1), **rtla-osnoise-top**\(1) + +*osnoise* tracer documentation: + +AUTHOR +====== +Written by Daniel Bristot de Oliveira + +.. include:: common_appendix.rst -- 2.31.1