Re: [PATCHSET 00/17] perf report: Add -F option for specifying output fields (v4)

[Don Zickus]

On Thu, Apr 24, 2014 at 10:41:39PM +0900, Namhyung Kim wrote:
> Hi Don,
> 
> 2014-04-23 (ì), 08:58 -0400, Don Zickus:
> > On Wed, Apr 23, 2014 at 03:15:35PM +0900, Namhyung Kim wrote:
> > > On Tue, 22 Apr 2014 17:16:47 -0400, Don Zickus wrote:
> > > > ./perf mem record -a grep -r foo /* > /dev/null
> > > > ./perf mem report -F overhead,symbol_daddr,pid -s symbol_daddr,pid --stdio 
> > > >
> > > > I was thinking I could sort everything based on the symbol_daddr and pid.
> > > > Then re-sort the output to display the highest 'symbol_daddr,pid' pair.
> > > > But it didn't seem to work that way.  Instead it seems like I get the
> > > > original sort just displayed in the -F format.
> > > 
> > > Could you please show me the output of your example?
> > 
> > 
> > # To display the perf.data header info, please use --header/--header-only
> > # options.
> > #
> > # Samples: 96K of event 'cpu/mem-loads/pp'
> > # Total weight : 1102938
> > # Sort order   : symbol_daddr,pid
> > #
> > # Overhead Data Symbol          Command:  Pid
> > # ........ ......................................................................
> > #
> >      0.00%  [k] 0xffff8807a8c1cf80 grep:116437
> >      0.00%  [k] 0xffff8807a8c8cee0 grep:116437
> >      0.00%  [k] 0xffff8807a8dceea0 grep:116437
> >      0.01%  [k] 0xffff8807a9298dc0 grep:116437
> >      0.01%  [k] 0xffff8807a934be40 grep:116437
> >      0.00%  [k] 0xffff8807a9416ec0 grep:116437
> >      0.02%  [k] 0xffff8807a9735700 grep:116437
> >      0.00%  [k] 0xffff8807a98e9460 grep:116437
> >      0.02%  [k] 0xffff8807a9afc890 grep:116437
> >      0.00%  [k] 0xffff8807aa64feb0 grep:116437
> >      0.02%  [k] 0xffff8807aa6b0030 grep:116437
> 
> Hmm.. it seems that it's exactly sorted by the data symbol addresses, so
> I don't see any problem here.  What did you expect?  If you want to see
> those symbol_daddr,pid pair to be sorted by overhead, you can use the
> one of -F or -s option only.

Good question.  I guess I was hoping to see things sorted by overhead, but
as you said removing all the -F options gives me that.  I have been
distracted with other fires this week, I lost focus at what I was trying
to accomplish.

Let me figure that out again and try to come up with a more clear email
explaining what I was looking for (for myself at least :-) ).

Sorry for the distraction.

Cheers,
Don
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