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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