From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934203AbcATC1K (ORCPT ); Tue, 19 Jan 2016 21:27:10 -0500 Received: from mga14.intel.com ([192.55.52.115]:30340 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933193AbcATC0z (ORCPT ); Tue, 19 Jan 2016 21:26:55 -0500 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.22,319,1449561600"; d="scan'208";a="896983142" From: Andi Kleen To: acme@kernel.org Cc: jolsa@kernel.org, mingo@kernel.org, linux-kernel@vger.kernel.org, eranian@google.com Subject: perf, tools: Refactor and support interval and CSV metrics Date: Tue, 19 Jan 2016 18:26:43 -0800 Message-Id: <1453256812-24006-1-git-send-email-andi@firstfloor.org> X-Mailer: git-send-email 2.4.3 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org [v5: Fix mainly bisect problems. No regressions introduced by one patch and fixed again later. Some minor fixes in addition] [v6: Fix running/noise printing patch.] [v7: Reorder and merge two patches to avoid a bisect hole where unsupported was printed as 0] [v8: Minor fixes for review feedback. See changelog in patches.] [v9: Fix newline bug. Add support for -A for --metric-only] Currently perf stat does not support printing computed metrics for interval (-I xxx) or CSV (-x,) mode. For example IPC or TSX metrics over time are quite useful to know. This patch implements them. The main obstacle was that the metrics printing was all open coded all over the metrics computation code. The second patch refactors the metrics printing to work through call backs that can be more easily changed. This also cleans up the metrics printing significantly. The indentation is now handled through printf, no more need to manually count spaces. Then based on that it implements metrics printing for CSV and interval mode, and finally a --metric-only mode. Example output: % perf stat -I1000 -a sleep 1 # time counts unit events metric multiplex 1.001301370 12020.049593 task-clock (msec) (100.00%) 1.001301370 3,952 context-switches # 0.329 K/sec (100.00%) 1.001301370 69 cpu-migrations # 0.006 K/sec (100.00%) 1.001301370 76 page-faults # 0.006 K/sec 1.001301370 386,582,789 cycles # 0.032 GHz (100.00%) 1.001301370 716,441,544 stalled-cycles-frontend # 185.33% frontend cycles idle (100.00%) 1.001301370 stalled-cycles-backend 1.001301370 101,751,678 instructions # 0.26 insn per cycle 1.001301370 # 7.04 stalled cycles per insn (100.00%) 1.001301370 20,914,692 branches # 1.740 M/sec (100.00%) 1.001301370 1,943,630 branch-misses # 9.29% of all branches CSV mode % perf stat -x, -I1000 -a sleep 1 1.000852081,12016.143006,,task-clock 1.000852081,4457,,context-switches,12015168277,100.00,0.371,K/sec 1.000852081,50,,cpu-migrations,12014024424,100.00,0.004,K/sec 1.000852081,76,,page-faults,12013076716,100.00,0.006,K/sec 1.000852081,515854373,,cycles,12011235336,100.00,0.043,GHz 1.000852081,1030742150,,stalled-cycles-frontend,12010984057,100.00,199.81,frontend cycles idle 1.000852081,,,stalled-cycles-backend,0,100.00 1.000852081,116782495,,instructions,12011130729,100.00,0.23,insn per cycle 1.000852081,,,,12011130729,100.00,8.83,stalled cycles per insn 1.000852081,23748237,,branches,12010745125,100.00,1.976,M/sec 1.000852081,1976560,,branch-misses,12010501884,100.00,8.32,of all branches Available in git://git.kernel.org/pub/scm/linux/kernel/git/ak/linux-misc-2.6 perf/stat-metrics-13