From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: Paul Menage <menage@google.com>
Cc: Dhaval Giani <dhaval@linux.vnet.ibm.com>,
vatsa@linux.vnet.ibm.com, balbir@linux.vnet.ibm.com,
mingo@elte.hu, linux-kernel@vger.kernel.org,
akpm@linux-foundation.org, skumar@linux.vnet.ibm.com
Subject: Re: [patch 2/2] sched: allow cpuacct stats to be reset
Date: Fri, 29 Feb 2008 11:38:54 +0100 [thread overview]
Message-ID: <1204281534.6243.75.camel@lappy> (raw)
In-Reply-To: <6599ad830802290208l6b9d97d1l67e351fc2f9112f7@mail.gmail.com>
On Fri, 2008-02-29 at 02:08 -0800, Paul Menage wrote:
> On Thu, Feb 28, 2008 at 10:04 PM, Dhaval Giani
> <dhaval@linux.vnet.ibm.com> wrote:
> > On Thu, Feb 28, 2008 at 09:48:51PM -0800, Paul Menage wrote:
> >
> > > On Thu, Feb 28, 2008 at 8:32 PM, Dhaval Giani <dhaval@linux.vnet.ibm.com> wrote:
> > >
> >
> > > Can I suggest, in order to be more generic, that this patch instead
> > > set each CPU's counter to the written value divided by the number of
> > > CPUs? (Either forgetting the remainder, or spreading it among the
> > > first few CPUs).
> > >
> >
> > This patch is only allowing a reset of the stats. In what sort of a
> > situation would one be looking for changing the usage value?
>
> How about Checkpoint/Restart?
Shouldn't that be a kernel side thing? And from the kernel you can put
back any value you fancy.
next prev parent reply other threads:[~2008-02-29 10:39 UTC|newest]
Thread overview: 12+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-02-29 4:32 [patch 0/2] sched: cpuacct: minor cleanups and reset for cpuusage Dhaval Giani
2008-02-29 4:32 ` [patch 1/2] sched: cleanup cpuacct variable names Dhaval Giani
2008-03-07 4:58 ` Balbir Singh
2008-03-07 8:58 ` Ingo Molnar
2008-02-29 4:32 ` [patch 2/2] sched: allow cpuacct stats to be reset Dhaval Giani
2008-02-29 5:48 ` Paul Menage
2008-02-29 6:02 ` Srivatsa Vaddagiri
2008-02-29 6:04 ` Dhaval Giani
2008-02-29 10:08 ` Paul Menage
2008-02-29 10:38 ` Peter Zijlstra [this message]
2008-03-07 5:00 ` Balbir Singh
2008-03-07 8:59 ` Ingo Molnar
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