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Date: Fri, 18 Sep 2020 14:58:41 +0800 From: "Jin, Yao" <yao.jin@...ux.intel.com> To: Arnaldo Carvalho de Melo <acme@...nel.org> Cc: jolsa@...nel.org, peterz@...radead.org, mingo@...hat.com, alexander.shishkin@...ux.intel.com, Linux-kernel@...r.kernel.org, ak@...ux.intel.com, kan.liang@...el.com, yao.jin@...el.com Subject: Re: [PATCH v6 7/7] perf diff: Support hot streams comparison Hi Arnaldo, On 9/18/2020 4:26 AM, Arnaldo Carvalho de Melo wrote: > Em Fri, Sep 11, 2020 at 04:03:53PM +0800, Jin Yao escreveu: >> This patch enables perf-diff with "--stream" option. >> >> "--stream": Enable hot streams comparison >> >> Now let's see examples. >> >> perf record -b ... Generate perf.data.old with branch data >> perf record -b ... Generate perf.data with branch data >> perf diff --stream >> >> [ Matched hot streams ] >> >> hot chain pair 1: >> cycles: 1, hits: 27.77% cycles: 1, hits: 9.24% >> --------------------------- -------------------------- >> main div.c:39 main div.c:39 >> main div.c:44 main div.c:44 >> >> hot chain pair 2: >> cycles: 34, hits: 20.06% cycles: 27, hits: 16.98% >> --------------------------- -------------------------- >> __random_r random_r.c:360 __random_r random_r.c:360 > > Would it be interesting to get the associated source code and show right below > these file:number lines? > > - Arnaldo > Yes, that would be better. Let me think about the implementation. Thanks Jin Yao
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