Messages in this thread | | | Date | Fri, 25 Nov 2016 00:45:22 +0100 | From | Jiri Olsa <> | Subject | Re: [PATCH 06/14] perf tools: show NMI overhead |
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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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