From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-14.0 required=3.0 tests=BAYES_00,INCLUDES_PATCH, MAILING_LIST_MULTI,MENTIONS_GIT_HOSTING,SPF_HELO_NONE,SPF_PASS autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 7B49AC433FE for ; Sat, 12 Dec 2020 10:45:05 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 30B37230FA for ; Sat, 12 Dec 2020 10:45:05 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2407372AbgLLKpE convert rfc822-to-8bit (ORCPT ); Sat, 12 Dec 2020 05:45:04 -0500 Received: from us-smtp-delivery-44.mimecast.com ([205.139.111.44]:42878 "EHLO us-smtp-delivery-44.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2407359AbgLLKpE (ORCPT ); Sat, 12 Dec 2020 05:45:04 -0500 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-2-pA80Mip4PumNsufpWgvXWA-1; Sat, 12 Dec 2020 05:44:06 -0500 X-MC-Unique: pA80Mip4PumNsufpWgvXWA-1 Received: from smtp.corp.redhat.com (int-mx03.intmail.prod.int.phx2.redhat.com [10.5.11.13]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 22036107ACE3; Sat, 12 Dec 2020 10:44:04 +0000 (UTC) Received: from krava.redhat.com (unknown [10.40.192.32]) by smtp.corp.redhat.com (Postfix) with ESMTP id 9F4837086D; Sat, 12 Dec 2020 10:43:59 +0000 (UTC) From: Jiri Olsa To: Arnaldo Carvalho de Melo Cc: lkml , Peter Zijlstra , Ingo Molnar , Mark Rutland , Namhyung Kim , Alexander Shishkin , Michael Petlan , Ian Rogers , Stephane Eranian , Alexei Budankov Subject: [RFC 0/8] perf tools: Add daemon command Date: Sat, 12 Dec 2020 11:43:50 +0100 Message-Id: <20201212104358.412065-1-jolsa@kernel.org> MIME-Version: 1.0 X-Scanned-By: MIMEDefang 2.79 on 10.5.11.13 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=jolsa@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 hi, we were asked for possibility to be able run record sessions on background, sending the first stab on it to gather more info. This patchset adds support to configure and run record sessions on background via new 'perf daemon' command. Please check below the example on usage. Available also here: git://git.kernel.org/pub/scm/linux/kernel/git/jolsa/perf.git perf/daemon thoughts? ;-) thanks, jirka --- Jiri Olsa (8): perf tools: Add debug_set_file function perf tools: Add debug_set_display_time function perf tools: Add config set interface perf daemon: Add daemon command perf daemon: Add signal command perf daemon: Add stop command perf daemon: Allow only one daemon over base directory perf daemon: Set control fifo for session tools/perf/Build | 3 + tools/perf/Documentation/perf-daemon.txt | 135 +++++++++++++++++ tools/perf/builtin-daemon.c | 916 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ tools/perf/builtin.h | 1 + tools/perf/command-list.txt | 1 + tools/perf/perf.c | 1 + tools/perf/util/config.c | 28 +++- tools/perf/util/config.h | 3 + tools/perf/util/debug.c | 41 ++++- tools/perf/util/debug.h | 3 + 10 files changed, 1124 insertions(+), 8 deletions(-) create mode 100644 tools/perf/Documentation/perf-daemon.txt create mode 100644 tools/perf/builtin-daemon.c --- Example with that runs 2 record sessions: # cat config.daemon [daemon] base=/opt/perfdata [session-1] run = -m 10M -e cycles -o /opt/perfdata/1/perf.data --overwrite --switch-output -a [session-2] run = -m 20M -e sched:* -o /opt/perfdata/2/perf.data --overwrite --switch-output -a Default perf config has the same daemon base: # cat ~/.perfconfig [daemon] base=/opt/perfdata Starting the daemon: # perf daemon --config config.daemon Check sessions: # perf daemon [1:92187] perf record -m 11M -e cycles -o /opt/perfdata/1/perf.data --overwrite --switch-output -a [2:92188] perf record -m 20M -e sched:* -o /opt/perfdata/2/perf.data --overwrite --switch-output -a Check sessions with more info: # perf daemon -v [1:92187] perf record -m 11M -e cycles -o /opt/perfdata/1/perf.data --overwrite --switch-output -a output: /opt/perfdata/1/output control: /opt/perfdata/1/control ack: /opt/perfdata/1/ack [2:92188] perf record -m 20M -e sched:* -o /opt/perfdata/2/perf.data --overwrite --switch-output -a output: /opt/perfdata/2/output control: /opt/perfdata/2/control ack: /opt/perfdata/2/ack The 'output' file is perf record output for specific session. The 'control' and 'ack' files are perf control files. Send SIGUSR2 signal to all sessions: # perf daemon -s signal 12 sent to session '1 [92187]' signal 12 sent to session '2 [92188]' Send SIGUSR2 signal to session '1': # perf daemon --signal=1 signal 12 sent to session '1 [364758]' And check that the perf data dump was trigered: # cat /opt/perfdata/2/output rounding mmap pages size to 32M (8192 pages) [ perf record: dump data: Woken up 1 times ] [ perf record: Dump /opt/perfdata/2/perf.data.2020120715220385 ] Stop daemon: # perf daemon --stop perf daemon is exciting