From: "Zhang, Yanmin" <yanmin_zhang@linux.intel.com>
To: Nick Piggin <nickpiggin@yahoo.com.au>
Cc: Christoph Lameter <clameter@sgi.com>,
Andrew Morton <akpm@linux-foundation.org>,
LKML <linux-kernel@vger.kernel.org>,
mingo@elte.hu
Subject: Re: tbench regression - Why process scheduler has impact on tbench and why small per-cpu slab (SLUB) cache creates the scenario?
Date: Mon, 10 Sep 2007 08:56:32 +0800 [thread overview]
Message-ID: <1189385792.14611.1.camel@ymzhang> (raw)
In-Reply-To: <200709081808.42421.nickpiggin@yahoo.com.au>
On Sat, 2007-09-08 at 18:08 +1000, Nick Piggin wrote:
> On Wednesday 05 September 2007 17:07, Christoph Lameter wrote:
> > On Wed, 5 Sep 2007, Zhang, Yanmin wrote:
> > > > slub_max_order=3 slub_min_objects=8
> > >
> > > I tried this approach. The testing result showed 2.6.23-rc4 is about
> > > 2.5% better than 2.6.22. It really resovles the issue.
> >
> > Note also that the configuration you tried is the way SLUB is configured
> > in Andrew's tree.
>
> It still doesn't sound like it is competitive with SLAB at the same sizes.
> What's the problem?
Process scheduler and small SLUB per-cpu cache work together to create the tebnch regression.
Pls. see the starting of the thread.
-yanmin
next prev parent reply other threads:[~2007-09-10 0:57 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-09-05 0:46 tbench regression - Why process scheduler has impact on tbench and why small per-cpu slab (SLUB) cache creates the scenario? Zhang, Yanmin
2007-09-05 3:59 ` Christoph Lameter
2007-09-05 5:22 ` Zhang, Yanmin
2007-09-05 6:58 ` Christoph Lameter
2007-09-05 9:13 ` Zhang, Yanmin
2007-09-05 10:45 ` Christoph Lameter
2007-09-06 0:52 ` Zhang, Yanmin
2007-09-05 7:07 ` Christoph Lameter
2007-09-08 8:08 ` Nick Piggin
2007-09-10 0:56 ` Zhang, Yanmin [this message]
2007-09-09 22:10 ` Nick Piggin
2007-09-10 19:07 ` Christoph Lameter
2007-09-10 15:17 ` Nick Piggin
2007-09-11 20:19 ` Christoph Lameter
2007-09-11 4:59 ` Nick Piggin
2007-09-13 6:04 ` Siddha, Suresh B
2007-09-13 18:03 ` Christoph Lameter
2007-09-14 19:15 ` Siddha, Suresh B
2007-09-14 19:51 ` Christoph Lameter
2007-09-19 2:17 ` Siddha, Suresh B
2007-09-20 17:53 ` Christoph Lameter
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