linux-kernel - Re: [PATCH RFC 03/10] perf,tools: support option --socket

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Date:	Thu, 20 Aug 2015 11:30:28 +0200
From:	Jiri Olsa <jolsa@...hat.com>
To:	kan.liang@...el.com
Cc:	acme@...nel.org, a.p.zijlstra@...llo.nl, mingo@...hat.com,
	jolsa@...nel.org, namhyung@...nel.org, ak@...ux.intel.com,
	eranian@...gle.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH RFC 03/10] perf,tools: support option --socket

On Tue, Aug 18, 2015 at 05:25:39AM -0400, kan.liang@...el.com wrote:
> From: Kan Liang <kan.liang@...el.com>
> 
> Introduce a new option for perf report to show the event information in
> the same socket together.
> When this option is set, perf report will force to sort by socket.
> 
> $ perf report --stdio --socket
>  # To display the perf.data header info, please use
>  --header/--header-only options.
>  #
>  #
>  # Total Lost Samples: 0
>  #
>  # Samples: 686  of event 'cycles'
>  # Event count (approx.): 349215462
>  #
>  #
>  # Socket: 0
>  #
>  # Overhead  Command    Shared Object     Symbol
>  # ........  .........  ................
>  .................................
>  #
>     97.05%  test       test              [.] plusB_c
>      0.98%  test       test              [.] plusA_c
>      0.16%  test       [kernel.vmlinux]  [k] add_mm_counter_fast
>      0.15%  swapper    [kernel.vmlinux]  [k] note_gp_changes
>      0.15%  perf       [kernel.vmlinux]  [k] unmap_single_vma
>      0.06%  perf       [kernel.vmlinux]  [k] run_timer_softirq
>      0.00%  swapper    [kernel.vmlinux]  [k] native_write_msr
>  #
>  # Socket: 1
>  #
>  # Overhead  Command    Shared Object     Symbol
>  # ........  .........  ................
>  .................................
>  #
>      0.93%  perf       [kernel.vmlinux]  [k] smp_call_function_single
>      0.19%  perf       [kernel.vmlinux]  [k] page_fault
>      0.19%  swapper    [kernel.vmlinux]  [k] pm_qos_request
>      0.12%  rcu_sched  [kernel.vmlinux]  [k]
> dyntick_save_progress_counter
>      0.00%  swapper    [kernel.vmlinux]  [k] wake_up_process
>      0.00%  swapper    [kernel.vmlinux]  [k] __do_softirq
>      0.00%  swapper    [kernel.vmlinux]  [k] run_timer_softirq
>      0.00%  swapper    [kernel.vmlinux]  [k] native_write_msr
>      0.00%  perf       [kernel.vmlinux]  [k] native_write_msr

nice, but should this be handled by HIST_FILTER__* stuff?

also having generic ability to 'zoom' in TUI for SOCKET/CPU
would be great.. it's already there for thread and dso

jirka
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