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SubjectRe: [PATCH 06/14] perf tools: show NMI overhead
On Fri, Nov 25, 2016 at 08:20:13AM +0900, Namhyung Kim wrote:
> Hi,
>
> On Thu, Nov 24, 2016 at 04:27:21PM +0100, Jiri Olsa wrote:
> > On Thu, Nov 24, 2016 at 01:37:04PM +0000, Liang, Kan wrote:
> > >
> > >
> > > >
> > > > On Wed, Nov 23, 2016 at 04:44:44AM -0500, kan.liang@intel.com wrote:
> > > > > From: Kan Liang <kan.liang@intel.com>
> > > > >
> > > > > Caculate the total NMI overhead on each CPU, and display them in perf
> > > > > report
> > > >
> > > > so the output looks like this:
> > > >
> > > > ---
> > > > # Elapsed time: 1720167944 ns
> > > > # Overhead:
> > > > # CPU 6
> > > > # NMI#: 27 time: 111379 ns
> > > > # Multiplexing#: 0 time: 0 ns
> > > > # SB#: 57 time: 90045 ns
> > > > #
> > > > # Samples: 26 of event 'cycles:u'
> > > > # Event count (approx.): 1677531
> > > > #
> > > > # Overhead Command Shared Object Symbol
> > > > # ........ ....... ................ .......................
> > > > #
> > > > 24.20% ls ls [.] _init
> > > > 17.18% ls libc-2.24.so [.] __strcoll_l
> > > > 11.85% ls ld-2.24.so [.] _dl_relocate_object
> > > > ---
> >
> > how about we display the overhead information same way the main perf output:
> >
> > CPU NMI NMI time MTX MTX time SB SB time
> > ... ..... ........ ..... ........ ...... ........
> > 6 27 111379 0 0 57 90045
> >
> >
> > would be just matter of adding new sort objects
>
> How would you connect those to hist entries then? It'd be possible if
> the sort key had 'cpu' only, no?

right, I should have said fields then..

jirka

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