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SubjectRe: [PATCHSET 00/17] perf report: Add -F option for specifying output fields (v4)
On Wed, Apr 23, 2014 at 03:15:35PM +0900, Namhyung Kim wrote:
> Hi Don,
>
> On Tue, 22 Apr 2014 17:16:47 -0400, Don Zickus wrote:
> > On Wed, Apr 16, 2014 at 12:05:37PM +0900, Namhyung Kim wrote:
> >> Hello,
> >>
> >> This is a patchset implementing -F/--fields option to setup output
> >> field/column as Ingo requested. It depends on my --percentage
> >> patchset [1].
> >>
> >> The -F option can receive any sort keys that -s option recognize, plus
> >> following fields (name can be changed):
> >>
> >> overhead, overhead_sys, overhead_us, sample, period
> >>
> >> The overhead_guest_sys and overhead_guest_us might be avaiable when
> >> you profile guest machines.
> >>
> >> Output will be sorted by in order of fields and sort keys passed by -s
> >> option will be added to the output field list automatically. If you
> >> want to change the order of sorting you can give -s option in addition
> >> to -F option. To support old behavior, it'll also prepend 'overhead'
> >> field to the sort keys unless you give -F option explicitly.
> >
> > So I am struggling a little bit to get this working correctly. I had it
> > in my head that I could sort internally with -s and re-sort the output
> > based on -F, but it doesn't seem to be working that way.
>
> Hmm.. probably it's me miss something on perf mem side.. I don't have
> an access to a machine to test it now.
>
> >
> > For example with
> >
> > ./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

Cheers,
Don


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