From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1763950AbcALR7u (ORCPT ); Tue, 12 Jan 2016 12:59:50 -0500 Received: from bombadil.infradead.org ([198.137.202.9]:44056 "EHLO bombadil.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762282AbcALR7b (ORCPT ); Tue, 12 Jan 2016 12:59:31 -0500 From: Arnaldo Carvalho de Melo To: Ingo Molnar Cc: linux-kernel@vger.kernel.org, Namhyung Kim , Andi Kleen , Brendan Gregg , David Ahern , Jiri Olsa , Peter Zijlstra , Wang Nan , Arnaldo Carvalho de Melo Subject: [PATCH 07/11] perf tools: Add more usage tips Date: Tue, 12 Jan 2016 14:59:12 -0300 Message-Id: <1452621556-10616-8-git-send-email-acme@kernel.org> X-Mailer: git-send-email 2.1.0 In-Reply-To: <1452621556-10616-1-git-send-email-acme@kernel.org> References: <1452621556-10616-1-git-send-email-acme@kernel.org> X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Namhyung Kim 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 a1c10e360db5..e0ce9573b79b 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 -- 2.1.0