Re: [PATCH 2/2] perf scripts: Fix rwtop record script

From: Jiri Olsa
Date: Wed Feb 06 2013 - 07:49:08 EST


On Tue, Feb 05, 2013 at 09:15:20AM -0700, David Ahern wrote:
> On 2/5/13 9:05 AM, Jiri Olsa wrote:
> >Adding -D option into the rwtop record command line, to get
> >immediate response when there's event in the buffer.
>
> Seems like this will dramatically increase CPU usage of perf-record
> as well as increase the overhead of each event with a process
> wakeup. How about a poll option on perf-record to have it wake up at
> a given rate instead?

right, I'll check

thanks,
jirka
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