From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.5 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,USER_AGENT_MUTT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0AB01C43441 for ; Thu, 29 Nov 2018 11:33:37 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CDF8B206B6 for ; Thu, 29 Nov 2018 11:33:36 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CDF8B206B6 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=redhat.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728007AbeK2Wii (ORCPT ); Thu, 29 Nov 2018 17:38:38 -0500 Received: from mx1.redhat.com ([209.132.183.28]:48402 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726736AbeK2Wih (ORCPT ); Thu, 29 Nov 2018 17:38:37 -0500 Received: from smtp.corp.redhat.com (int-mx01.intmail.prod.int.phx2.redhat.com [10.5.11.11]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 58A609FDDE; Thu, 29 Nov 2018 11:33:34 +0000 (UTC) Received: from krava (unknown [10.43.17.17]) by smtp.corp.redhat.com (Postfix) with ESMTP id 59B5A6012C; Thu, 29 Nov 2018 11:33:32 +0000 (UTC) Date: Thu, 29 Nov 2018 12:33:30 +0100 From: Jiri Olsa To: Jin Yao Cc: acme@kernel.org, jolsa@kernel.org, peterz@infradead.org, mingo@redhat.com, alexander.shishkin@linux.intel.com, Linux-kernel@vger.kernel.org, ak@linux.intel.com, kan.liang@intel.com, yao.jin@intel.com Subject: Re: [PATCH v4 0/4] perf report/annotate: Support average IPC and IPC coverage for function Message-ID: <20181129113330.GE25884@krava> References: <1543505978-19808-1-git-send-email-yao.jin@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1543505978-19808-1-git-send-email-yao.jin@linux.intel.com> User-Agent: Mutt/1.10.1 (2018-07-13) X-Scanned-By: MIMEDefang 2.79 on 10.5.11.11 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.39]); Thu, 29 Nov 2018 11:33:34 +0000 (UTC) Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Nov 29, 2018 at 11:39:34PM +0800, Jin Yao wrote: > Add supporting of displaying the average IPC and IPC coverage > percentage per function. > > For example, > > $ perf record -b ... > $ perf report -s symbol or > perf report -s symbol --stdio > > Overhead Symbol IPC [IPC Coverage] > 39.60% [.] __random 2.30 [ 54.8%] > 18.02% [.] main 0.43 [ 54.3%] > 14.21% [.] compute_flag 2.29 [100.0%] > 14.16% [.] rand 0.36 [100.0%] > 7.06% [.] __random_r 2.57 [ 70.5%] > 6.85% [.] rand@plt 0.00 [ 0.0%] > ... > > $ perf annotate --stdio2 > > Percent IPC Cycle (Average IPC: 2.30, IPC Coverage: 54.8%) > > Disassembly of section .text: > > 000000000003aac0 : > 8.32 3.28 sub $0x18,%rsp > 3.28 mov $0x1,%esi > 3.28 xor %eax,%eax > 3.28 cmpl $0x0,argp_program_version_hook@@GLIBC_2.2.5+0x1e0 > 11.57 3.28 1 ↓ je 20 > lock cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0 > ↓ jne 29 > ↓ jmp 43 > 11.57 1.10 20: cmpxchg %esi,__abort_msg@@GLIBC_PRIVATE+0x8a0 > ... > > v4: > --- > Add a new patch "perf report: Documentation average IPC and IPC coverage" > to explain the new columns "IPC" and "IPC Coverage". > > Other patches are not changed. > > v3: > --- > Remove the sortkey "ipc" from command-line. The columns "IPC" > and "[IPC Coverage]" are automatically enabled when "symbol" > is specified. > > Patch "perf report: Display average IPC and IPC coverage per symbol" > is impacted. > > v2: > --- > 1. Merge in Jiri's patch to support stdio mode > > 2. Add a new patch "perf annotate: Create a annotate2 flag > in struct symbol" which records if the symbol has been > annotated yet. > > 3. Minor update such as adding { } for multiline code in 'if' > condition. > > Jin Yao (4): > perf annotate: Compute average IPC and IPC coverage per symbol > perf annotate: Create a annotate2 flag in struct symbol > perf report: Display average IPC and IPC coverage per symbol > perf report: Documentation average IPC and IPC coverage Reviewed-by: Jiri Olsa thanks, jirka