linux-kernel - [tip:perf/urgent] perf tools: Add more usage tips

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Message-ID: <tip-09f1985404aa99b9d1ad435fcb0dabd20d4ed498@git.kernel.org>
Date:	Wed, 13 Jan 2016 01:41:45 -0800
From:	tip-bot for Namhyung Kim <tipbot@...or.com>
To:	linux-tip-commits@...r.kernel.org
Cc:	andi@...stfloor.org, linux-kernel@...r.kernel.org,
	wangnan0@...wei.com, acme@...hat.com, hpa@...or.com,
	peterz@...radead.org, dsahern@...il.com, tglx@...utronix.de,
	brendan.d.gregg@...il.com, mingo@...nel.org, namhyung@...nel.org,
	jolsa@...nel.org
Subject: [tip:perf/urgent] perf tools: Add more usage tips

Commit-ID:  09f1985404aa99b9d1ad435fcb0dabd20d4ed498
Gitweb:     http://git.kernel.org/tip/09f1985404aa99b9d1ad435fcb0dabd20d4ed498
Author:     Namhyung Kim <namhyung@...nel.org>
AuthorDate: Mon, 11 Jan 2016 19:35:10 +0900
Committer:  Arnaldo Carvalho de Melo <acme@...hat.com>
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 <andi@...stfloor.org>
Signed-off-by: Namhyung Kim <namhyung@...nel.org>
Cc: Andi Kleen <andi@...stfloor.org>
Cc: Brendan Gregg <brendan.d.gregg@...il.com>
Cc: David Ahern <dsahern@...il.com>
Cc: Jiri Olsa <jolsa@...nel.org>
Cc: Peter Zijlstra <peterz@...radead.org>
Cc: Wang Nan <wangnan0@...wei.com>
Link: http://lkml.kernel.org/r/1452508510-28316-1-git-send-email-namhyung@kernel.org
Signed-off-by: Arnaldo Carvalho de Melo <acme@...hat.com>
---
 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 <keyword>
 To see list of saved events and attributes: perf evlist -v
 Use --symfs <dir> 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 <user>
+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 <symbol>
+If you prefer Intel style assembly, try: perf annotate -M intel