Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains

From	Arnaldo Carvalho de Melo <acme@kernel.org>
Newsgroups	linux.kernel
Subject	Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains
Date	2016-01-26 16:40 +0100
Message-ID	<qVdSP-644-33@gated-at.bofh.it> (permalink)
References	(3 earlier) <qVbR1-4Hb-25@gated-at.bofh.it> <qVcDn-5i7-3@gated-at.bofh.it> <qVd6q-5vL-5@gated-at.bofh.it> <qVdg6-5z6-17@gated-at.bofh.it> <qVdzs-5Vw-15@gated-at.bofh.it>
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Em Tue, Jan 26, 2016 at 04:18:00PM +0100, Jiri Olsa escreveu:
> On Tue, Jan 26, 2016 at 11:49:07PM +0900, Namhyung Kim wrote:
> 
> SNIP
> 
> > >                __hrtimer_run_queues
> > >                tick_sched_timer
> > >                tick_sched_handle.isra.17
> > >                update_process_times
> > >                scheduler_tick
> > >                perf_event_task_tick
> > >                perf_pmu_enable.part.87
> > >                x86_pmu_enable
> > >                intel_pmu_enable_all
> > >                intel_bts_enable_local
> > > 
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] perf_pmu_enable.part.87     
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] perf_event_context_sched_in 
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] perf_event_exec             
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] setup_new_exec              
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] load_elf_binary             
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] search_binary_handler       
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] do_execveat_common.isra.33  
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] sys_execve                  
> > >      0.08%     0.00%  perf     [kernel.vmlinux]  [k] return_from_execve          
> > >      0.08%     0.00%  perf     [unknown]         [k] 0x00007f2175b35e07          
> > >      0.04%     0.00%  perf     [kernel.vmlinux]  [k] perf_event_nmi_handler      
> > >      0.04%     0.00%  perf     [kernel.vmlinux]  [k] nmi_handle                  
> > >      0.04%     0.00%  perf     [kernel.vmlinux]  [k] default_do_nmi              
> > >      0.04%     0.00%  perf     [kernel.vmlinux]  [k] do_nmi                      
> > >      0.04%     0.00%  perf     [kernel.vmlinux]  [k] end_repeat_nmi              
> > >      0.04%     0.04%  perf     [kernel.vmlinux]  [k] x86_pmu_enable              
> > >      0.04%     0.04%  perf     [kernel.vmlinux]  [k] native_apic_mem_write       
> > > 
> > 
> > What's the problem?  Now by default callchains under 0.5% (absolute)
> > will not be shown.  I think this is intended output, and we need to
> > consider changing the default percent limit.
> 
> hm, just the TUI shows +- for entries with no callchain

Humm, this is an old bug, never got around to try to fix it, or is this
something you were not experiencing before this patchkit from Namhyung?

- Arnaldo

Thread

[PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-24 15:00 +0100
  Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Andi Kleen <andi@firstfloor.org> - 2016-01-25 03:20 +0100
  Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 13:20 +0100
    Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-26 14:00 +0100
      Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 14:30 +0100
        Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-26 15:20 +0100
          Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 15:50 +0100
            Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-26 16:00 +0100
              Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 16:20 +0100
                Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Arnaldo Carvalho de Melo <acme@kernel.org> - 2016-01-26 16:40 +0100
                Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 16:50 +0100
                Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-26 17:00 +0100
                Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Jiri Olsa <jolsa@redhat.com> - 2016-01-26 17:20 +0100
                Re: [PATCHSET 00/12] perf tools: Apply percent-limit to callchains Namhyung Kim <namhyung@kernel.org> - 2016-01-27 14:30 +0100

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