Re: perfmon2 vector argument question

From: Stephane Eranian <eranian_at_hpl.hp.com>
Date: 2006-06-30 20:24:35
Andrew,

On Wed, Jun 28, 2006 at 08:17:08PM -0700, Andrew Morton wrote:
> > 
> > Does someone have something else to propose?
> > 
> > If not, what is your opinion of the two approaches above?
> > 
> 
> The first approach should be fine - we do that in lots of places, such as
> in core_sys_select().
> 
Ok, that's good to know. I looked at the stack consumption on x86 and it
is comparable to what you do for core_sys_select().

> Applications mut be calling this thing at a heck of a rate for kfree()
> overhead to matter.  I trust CONFIG_DEBUG_SLAB wasn't turned on...

That was using a micro-benchmark to stress certain paths in perfmon.
CONFIG_DEBUG_SLAB was not turned on.

Thanks.

-- 
-Stephane
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Received on Fri Jun 30 20:33:11 2006

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