From: Christoph Lameter <clameter@sgi.com>
To: Tim Chen <tim.c.chen@linux.intel.com>
Cc: "Chen, Tim C" <tim.c.chen@intel.com>,
"Siddha, Suresh B" <suresh.b.siddha@intel.com>,
"Zhang, Yanmin" <yanmin.zhang@intel.com>,
"Wang, Peter Xihong" <peter.xihong.wang@intel.com>,
Arjan van de Ven <arjan@infradead.org>,
linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: RE: Regression with SLUB on Netperf and Volanomark
Date: Fri, 4 May 2007 11:10:52 -0700 (PDT) [thread overview]
Message-ID: <Pine.LNX.4.64.0705041107290.23684@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <1178298897.23795.195.camel@localhost.localdomain>
On Fri, 4 May 2007, Tim Chen wrote:
> A side note is that for my tests, I bound the netserver and client to
> separate cpu core on different sockets in my tests, to make sure that
> the server and client do not share the same cache.
Ahhh... You have some scripts that you run. Care to share?
This is no NUMA syste? Two processors in an SMP system?
So its likely an issue of partial slabs shifting between multiple cpus and
if the partial slab is now used on the other cpu then it may be cache cold
there. Different sockets mean limitations to FSB bandwidth and bad caching
effects. I hope I can reproduce this somewhere.
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next prev parent reply other threads:[~2007-05-04 18:10 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-05-02 18:43 Tim Chen
2007-05-02 19:47 ` Christoph Lameter
2007-05-03 23:28 ` Chen, Tim C
2007-05-04 0:44 ` Christoph Lameter
2007-05-04 1:45 ` Christoph Lameter
2007-05-04 23:41 ` Tim Chen
2007-05-05 1:02 ` Christoph Lameter
2007-05-08 0:40 ` Tim Chen
2007-05-08 1:49 ` Christoph Lameter
2007-05-08 21:02 ` Tim Chen
2007-05-08 22:02 ` Christoph Lameter
2007-05-08 4:57 ` Christoph Lameter
2007-05-04 2:42 ` Christoph Lameter
2007-05-04 17:14 ` Tim Chen
2007-05-04 18:10 ` Christoph Lameter [this message]
2007-05-04 17:39 ` Tim Chen
2007-05-04 18:27 ` Christoph Lameter
2007-05-04 22:43 ` Tim Chen
2007-05-04 23:59 ` Christoph Lameter
2007-05-04 23:42 ` Tim Chen
2007-05-05 1:41 ` Christoph Lameter
2007-05-05 2:05 ` Christoph Lameter
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