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SubjectRe: [PATCH 9/9] perf c2c report: Add cacheline address count column
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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