On Tue, Jan 26, 2016 at 12:30:36PM -0300, Arnaldo Carvalho de Melo wrote:
> 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?
> 

well, there were callchains present before this patchset ;-)

jirka

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