From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933593AbcAMJmc (ORCPT ); Wed, 13 Jan 2016 04:42:32 -0500 Received: from terminus.zytor.com ([198.137.202.10]:48755 "EHLO terminus.zytor.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932974AbcAMJm1 (ORCPT ); Wed, 13 Jan 2016 04:42:27 -0500 Date: Wed, 13 Jan 2016 01:41:45 -0800 From: tip-bot for Namhyung Kim Message-ID: Cc: andi@firstfloor.org, linux-kernel@vger.kernel.org, wangnan0@huawei.com, acme@redhat.com, hpa@zytor.com, peterz@infradead.org, dsahern@gmail.com, tglx@linutronix.de, brendan.d.gregg@gmail.com, mingo@kernel.org, namhyung@kernel.org, jolsa@kernel.org Reply-To: acme@redhat.com, hpa@zytor.com, peterz@infradead.org, wangnan0@huawei.com, andi@firstfloor.org, linux-kernel@vger.kernel.org, tglx@linutronix.de, brendan.d.gregg@gmail.com, dsahern@gmail.com, namhyung@kernel.org, jolsa@kernel.org, mingo@kernel.org In-Reply-To: <1452508510-28316-1-git-send-email-namhyung@kernel.org> References: <1452508510-28316-1-git-send-email-namhyung@kernel.org> To: linux-tip-commits@vger.kernel.org Subject: [tip:perf/urgent] perf tools: Add more usage tips Git-Commit-ID: 09f1985404aa99b9d1ad435fcb0dabd20d4ed498 X-Mailer: tip-git-log-daemon Robot-ID: Robot-Unsubscribe: Contact to get blacklisted from these emails MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain; charset=UTF-8 Content-Disposition: inline Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Commit-ID: 09f1985404aa99b9d1ad435fcb0dabd20d4ed498 Gitweb: http://git.kernel.org/tip/09f1985404aa99b9d1ad435fcb0dabd20d4ed498 Author: Namhyung Kim AuthorDate: Mon, 11 Jan 2016 19:35:10 +0900 Committer: Arnaldo Carvalho de Melo CommitDate: Tue, 12 Jan 2016 12:42:07 -0300 perf tools: Add more usage tips Thanks to Andi Kleen for providing useful tips. Suggested-by: Andi Kleen Signed-off-by: Namhyung Kim Cc: Andi Kleen Cc: Brendan Gregg Cc: David Ahern Cc: Jiri Olsa Cc: Peter Zijlstra Cc: Wang Nan Link: http://lkml.kernel.org/r/1452508510-28316-1-git-send-email-namhyung@kernel.org Signed-off-by: Arnaldo Carvalho de Melo --- tools/perf/Documentation/tips.txt | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/tools/perf/Documentation/tips.txt b/tools/perf/Documentation/tips.txt index a1c10e3..e0ce957 100644 --- a/tools/perf/Documentation/tips.txt +++ b/tools/perf/Documentation/tips.txt @@ -12,3 +12,18 @@ List events using substring match: perf list To see list of saved events and attributes: perf evlist -v Use --symfs if your symbol files are in non-standard locations To see callchains in a more compact form: perf report -g folded +Show individual samples with: perf script +Limit to show entries above 5% only: perf report --percent-limit 5 +Profiling branch (mis)predictions with: perf record -b / perf report +Treat branches as callchains: perf report --branch-history +To count events in every 1000 msec: perf stat -I 1000 +Print event counts in CSV format with: perf stat -x, +If you have debuginfo enabled, try: perf report -s sym,srcline +For memory address profiling, try: perf mem record / perf mem report +For tracepoint events, try: perf report -s trace_fields +To record callchains for each sample: perf record -g +To record every process run by an user: perf record -u +Skip collecing build-id when recording: perf record -B +To change sampling frequency to 100 Hz: perf record -F 100 +See assembly instructions with percentage: perf annotate +If you prefer Intel style assembly, try: perf annotate -M intel