From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S965975AbcBDJZ6 (ORCPT ); Thu, 4 Feb 2016 04:25:58 -0500 Received: from mail-pf0-f194.google.com ([209.85.192.194]:35756 "EHLO mail-pf0-f194.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S965838AbcBDJZ1 (ORCPT ); Thu, 4 Feb 2016 04:25:27 -0500 From: Taeung Song To: Arnaldo Carvalho de Melo Cc: linux-kernel@vger.kernel.org, Jiri Olsa , Namhyung Kim , Ingo Molnar , Taeung Song Subject: [PATCH 3/8] perf config: Document variables for 'report' section in man page Date: Thu, 4 Feb 2016 18:25:08 +0900 Message-Id: <1454577913-16401-4-git-send-email-treeze.taeung@gmail.com> X-Mailer: git-send-email 2.5.0 In-Reply-To: <1454577913-16401-1-git-send-email-treeze.taeung@gmail.com> References: <1454577913-16401-1-git-send-email-treeze.taeung@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Explain 'report' section's variables. 'percent-limit', 'queue-size' and 'children'. Cc: Namhyung Kim Cc: Jiri Olsa Signed-off-by: Taeung Song --- tools/perf/Documentation/perf-config.txt | 34 ++++++++++++++++++++++++++++++++ 1 file changed, 34 insertions(+) diff --git a/tools/perf/Documentation/perf-config.txt b/tools/perf/Documentation/perf-config.txt index 42310ae..72071ab 100644 --- a/tools/perf/Documentation/perf-config.txt +++ b/tools/perf/Documentation/perf-config.txt @@ -369,6 +369,40 @@ call-graph.*:: This is a maximum number of lines of callchain printed for a single histogram entry. Default is 0 which means no limitation. +report.*:: + report.percent-limit:: + This one is mostly same as call-graph.threshold but works for + histogram entries. Entries have overhead lower than this percentage + will not be printed. Default is 0. If percent-limit is 10, + entries which have more than 10% of overhead will be printed only. + + report.queue-size:: + This option is to setup the maximum allocation size of internal + event queue for ordering events. Default is 0, meaning no limit. + + report.children:: + The children means that functions called from another function. + If this option is true, perf report cumulates callchains of children + and show (accumulated) total overhead as well as self overhead. + Please refer to the perf-report manual. The default is true. + + report.group:: + This option is to show event group information together. + If it is 'true', event group view can be enabled by default i.e. + + # group: {ref-cycles,cycles} + # ======== + # + # Samples: 7K of event 'anon group { ref-cycles, cycles }' + # Event count (approx.): 6876107743 + # + # Overhead Command Shared Object Symbol + # ................ ....... ................. .......................... + # + 99.84% 99.76% noploop noploop [.] main + 0.07% 0.00% noploop ld-2.15.so [.] strcmp + 0.03% 0.00% noploop [kernel.kallsyms] [k] timerqueue_del + SEE ALSO -------- linkperf:perf[1] -- 2.5.0