Re: perfmon not counting idle?

From: Stephane Eranian <eranian_at_hpl.hp.com>
Date: 2005-10-17 19:32:17
Matt,

On Tue, Oct 18, 2005 at 03:44:53AM +1000, Matt Chapman wrote:
> I am probably missing something blatantly obvious due to lack of sleep,
> but, I can't seem to get perfmon to include the idle task.
> 
> I booted with nohalt and even commented out pm_idle and safe_halt in the
> idle loop, to try and make sure that power management isn't kicking in,
> but I still get numbers that seem to exclude idle time.
> 
> torrone:~# pfmon --system-wide
> <press ENTER to stop session>
>   ... run for a few seconds ...
> CPU0                       69597 CPU_CYCLES
> 
By default pfmon measures only at the user level (pl3).  If you want
kernel+user you need to add -k. You can tune priv levels per event
using --prev-levels.
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Received on Tue Oct 18 07:31:51 2005

This archive was generated by hypermail 2.1.8 : 2005-10-18 07:31:57 EST