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Re: [PATCH 7/7] event: add tracepoint for accounting block time [message #44272 is a reply to message #44264]

Mon, 28 November 2011 14:02

Arjan van de Ven
Messages: 14
Registered: March 2006

Junior Member

On 11/28/2011 3:42 AM, Peter Zijlstra wrote:
> On Mon, 2011-11-28 at 12:03 +0300, Andrew Vagin wrote:
>> This tracepoint shows how long a task is sleeping in uninterruptible state.
>>
>> E.g.
>> It may show how long and where a mutex is waited.
>
> Fair enough, makes one wonder how much it would take to make
> account_scheduler_latency() go away..

I would *love* to switch latencytop to using trace points / perf events.
But as long as this just means I get yelled at more for using "internal
ABIs" and the like at various occasions, I'm rather hesitant to turn
more tools into using perf.

(and we all know what the next steps to resolve this are, they just have
not happened yet; not all hope is lost)

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[Message index]

		[PATCH 0/7] Profiling sleep times (v3) By: Andrew Vagin on Mon, 28 November 2011 09:03
		[PATCH 3/7] perf: add ability to change event according to sample (v2) By: Andrew Vagin on Mon, 28 November 2011 09:03
		Re: [PATCH 3/7] perf: add ability to change event according to sample (v2) By: Arnaldo Carvalho de M[2] on Tue, 06 December 2011 15:06
		Re: [PATCH 3/7] perf: add ability to change event according to sample (v2) By: Arnaldo Carvalho de M[2] on Tue, 06 December 2011 14:19
		Re: [PATCH 3/7] perf: add ability to change event according to sample (v2) By: Arnaldo Carvalho de M[2] on Tue, 06 December 2011 14:24
		Re: [PATCH 3/7] perf: add ability to change event according to sample (v2) By: David Ahern on Tue, 06 December 2011 14:57
		[PATCH 2/7] perf: add ability to record event period By: Andrew Vagin on Mon, 28 November 2011 09:03
		Re: [PATCH 2/7] perf: add ability to record event period By: Arnaldo Carvalho de M[2] on Tue, 06 December 2011 14:02
		[PATCH 5/7] perf: teach perf inject to merge sched_stat_* and sched_switch events By: Andrew Vagin on Mon, 28 November 2011 09:03
		[PATCH 6/7] perf: add scripts for profiling sleep times (v2) By: Andrew Vagin on Mon, 28 November 2011 09:03
		[PATCH 4/7] perf: teach "perf inject" to work with files By: Andrew Vagin on Mon, 28 November 2011 09:03
		[PATCH 7/7] event: add tracepoint for accounting block time By: Andrew Vagin on Mon, 28 November 2011 09:03
		Re: [PATCH 7/7] event: add tracepoint for accounting block time By: Peter Zijlstra on Mon, 28 November 2011 11:42
		Re: [PATCH 7/7] event: add tracepoint for accounting block time By: Arjan van de Ven on Mon, 28 November 2011 14:02
		Re: [PATCH 7/7] event: add tracepoint for accounting block time By: Arnaldo Carvalho de M[2] on Mon, 28 November 2011 14:31
		Re: [PATCH 7/7] event: add tracepoint for accounting block time By: Arjan van de Ven on Mon, 28 November 2011 14:43
		Re: [PATCH 7/7] event: add tracepoint for accounting block time By: Arnaldo Carvalho de M[2] on Mon, 28 November 2011 14:59
		Re: [PATCH 0/7] Profiling sleep times (v3) By: Andrey Vagin on Tue, 06 December 2011 07:15
		Re: [PATCH 0/7] Profiling sleep times (v3) By: Ingo Molnar on Tue, 06 December 2011 08:30
		Re: [PATCH 0/7] Profiling sleep times (v3) By: Arnaldo Carvalho de M[2] on Tue, 06 December 2011 13:45
		Re: [PATCH 0/7] Profiling sleep times (v3) By: Arun Sharma on Wed, 07 December 2011 20:33

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