From: Pekka Enberg <penberg@cs.helsinki.fi>
To: David Rientjes <rientjes@google.com>
Cc: Christoph Lameter <cl@linux-foundation.org>,
linux-kernel@vger.kernel.org
Subject: Re: [patch] slub: allow stats to be cleared
Date: Thu, 15 Oct 2009 22:53:17 +0300 [thread overview]
Message-ID: <4AD77DAD.4070004@cs.helsinki.fi> (raw)
In-Reply-To: <alpine.DEB.1.00.0910150215320.1551@chino.kir.corp.google.com>
David Rientjes wrote:
> When collecting slub stats for particular workloads, it's necessary to
> collect each statistic for all caches before the job is even started
> because the counters are usually greater than zero just from boot and
> initialization.
>
> This allows a statistic to be cleared on each cpu by writing '0' to its
> sysfs file. This creates a baseline for statistics of interest before
> the workload is started.
>
> Setting a statistic to a particular value is not supported, so all values
> written to these files other than '0' returns -EINVAL.
>
> Cc: Christoph Lameter <cl@linux-foundation.org>
> Signed-off-by: David Rientjes <rientjes@google.com>
Applied, thanks!
next prev parent reply other threads:[~2009-10-15 19:54 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-15 9:20 David Rientjes
2009-10-15 19:53 ` Pekka Enberg [this message]
2009-10-16 16:50 ` Christoph Lameter
2009-10-16 18:33 ` David Rientjes
2009-10-16 18:49 ` Christoph Lameter
2009-10-17 1:27 ` Christoph Lameter
2009-10-17 8:55 ` David Rientjes
2009-10-17 20:41 ` Christoph Lameter
2009-10-20 21:41 ` David Rientjes
2009-10-21 6:44 ` Christoph Lameter
2009-10-17 7:23 ` Pekka Enberg
2009-10-17 8:54 ` David Rientjes
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