Em Sat, Sep 19, 2020 at 12:41:35PM +0800, Jin, Yao escreveu: > 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 > > > > I'm thinking we can implement this function in callchain_list__sym_name(), > and then all callchain functionality will benefit from it. While that looks > to be another patchset. :)
Sure, after we go thru the process of merging the current one. > Thanks > Jin Yao -- - Arnaldo
