Re: [Perf] Adding timeout option

From: abhishek agarwal
Date: Sun Oct 21 2012 - 00:19:06 EST

sleep does not offer a good timeout resolution and it is not a good
option (according to me) either.
perfmon had "timeout" option and i guess, same do oprofile.

On Sat, Oct 20, 2012 at 1:58 AM, Pádraig Brady <P@xxxxxxxxxxxxxx> wrote:
> 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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