Messages in this thread Patch in this message | | | Date | Fri, 9 Mar 2018 11:56:43 -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 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?
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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