From: Andrew Morton <akpm@osdl.org>
To: Christoph Lameter <christoph@lameter.com>
Cc: linux-kernel@vger.kernel.org, shai@scalex86.org
Subject: Re: [PATCH] Optimize sys_times for a single thread process
Date: Tue, 17 May 2005 17:20:59 -0700 [thread overview]
Message-ID: <20050517172059.615d144f.akpm@osdl.org> (raw)
In-Reply-To: <Pine.LNX.4.62.0505171708250.18365@graphe.net>
Christoph Lameter <christoph@lameter.com> wrote:
>
> > It all looks a bit fast-and-loose. If there are significant performance
> > benefits and these issues are loudly commented (they aren't at present)
> > then maybe-OK, I guess.
>
> There are significant performance benefits in particular for one standard
> NUMA benchmark that keeps calling sys_times over and over. I believe other
> programs may exhibit the same brain dead behavior.
hrm, OK. Please redo the patch with nice comments which explain what's
going on and why the end result is correct and safe, thanks.
next prev parent reply other threads:[~2005-05-18 0:20 UTC|newest]
Thread overview: 10+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-05-17 22:37 Christoph Lameter
2005-05-17 23:10 ` Andrew Morton
2005-05-18 0:13 ` Christoph Lameter
2005-05-18 0:20 ` Andrew Morton [this message]
2005-05-18 1:03 ` Mitchell Blank Jr
2005-05-18 1:00 ` Christoph Lameter
2005-05-18 9:23 Oleg Nesterov
2005-05-18 22:05 ` Christoph Lameter
2005-05-19 7:05 ` Oleg Nesterov
2005-05-19 14:41 ` Christoph Lameter
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