linux-kernel - Re: [Perf] Adding timeout option

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Date:	Fri, 19 Oct 2012 13:28:40 -0700
From:	Pádraig Brady <P@...igBrady.com>
To:	abhishek agarwal <abhigem.126@...il.com>
CC:	linux-kernel@...r.kernel.org
Subject: Re: [Perf] Adding timeout option

On 10/13/2012 08:54 AM, abhishek agarwal wrote:
> Hi folks..
>
> I was thinking that why cant we have a timeout option in perf stat
> command.  The timeout feature will help us to profile a process for a
> stipulated time (preferably in millisecs) and make perf stat return
> after that time.
> Eg:
>
> perf stat --timeout=10 sleep 100
>
> This will make perf return and report stats after 10 ms...
>
> Hope anyone can shed some more light on the idea

It seems preferable to use the timeout program to do this.
Either sending a handled signal to the perf process like:

     timeout -s HUP 10 perf stat sleep 100

Or even better, just use that to kill the monitored process itself

     perf stat timeout 10 sleep 100

cheers,
Pádraig.
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