Messages in this thread | | | Date | Fri, 9 Mar 2018 14:34:41 -0300 | From | Arnaldo Carvalho de Melo <> | Subject | Re: [PATCH 9/9] perf c2c report: Add cacheline address count column |
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Em Fri, Mar 09, 2018 at 05:28:28PM +0100, Jiri Olsa escreveu: > On Fri, Mar 09, 2018 at 11:56:43AM -0300, Arnaldo Carvalho de Melo wrote: > > Em Fri, Mar 09, 2018 at 11:14:42AM +0100, Jiri Olsa escreveu: > > > Adding the 'PA cnt' column grouped under data cacheline address. > > > > > > It shows how many times the physical addresses changed for the > > > hist entry. It does not show the number of different physical > > > addresses for entry, because we don't store those. We only track > > > the number of times we got different address than we currently > > > hold, which is not expensive and gives similar info. > > > > > > $ perf c2c report --stdio > > > > > > # ----------- Cacheline ---------- Total Tot ----- LLC Load Hitm ----- > > > # Index Address Node PA cnt records Hitm Total Lcl Rmt > > > # ..... .................. .... ...... ....... ....... ....... ....... ....... > > > # > > > > > > I'm adding this to the docs, ack? > > nope.. those fields are c2c report only.. hardcoded > > I'm preparing a change to share c2c fields with the > general report.. should come with other perf mem > changes later
Ok, dropping that then
> jirka > > > > > diff --git a/tools/perf/Documentation/perf-report.txt b/tools/perf/Documentation/perf-report.txt > > index cba16d8a970e..f4a280428e28 100644 > > --- a/tools/perf/Documentation/perf-report.txt > > +++ b/tools/perf/Documentation/perf-report.txt > > @@ -127,7 +127,7 @@ OPTIONS > > > > If the --mem-mode option is used, the following sort keys are also available > > (incompatible with --branch-stack): > > - symbol_daddr, dso_daddr, locked, tlb, mem, snoop, dcacheline. > > + symbol_daddr, dso_daddr, locked, tlb, mem, snoop, dcacheline, dcacheline_count. > > > > - symbol_daddr: name of data symbol being executed on at the time of sample > > - dso_daddr: name of library or module containing the data being executed > > @@ -137,6 +137,7 @@ OPTIONS > > - mem: type of memory access for the data at the time of the sample > > - snoop: type of snoop (if any) for the data at the time of the sample > > - dcacheline: the cacheline the data address is on at the time of the sample > > + - dcacheline_count: the number of physical addresses sampled for this dcacheline > > - phys_daddr: physical address of data being executed on at the time of sample > > > > And the default sort keys are changed to local_weight, mem, sym, dso,
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