From: "Bryan O'Sullivan" <bos@serpentine.com>
To: brettspamacct@fastclick.com
Cc: "Martin J. Bligh" <mbligh@aracnet.com>, Andi Kleen <ak@muc.de>,
linux-kernel@vger.kernel.org
Subject: Re: How can I optimize a process on a NUMA architecture(x86-64 specifically)?
Date: Sat, 22 May 2004 17:28:09 -0700 [thread overview]
Message-ID: <1085272089.25212.6.camel@obsidian.pathscale.com> (raw)
In-Reply-To: <40AE93E0.7060308@fastclick.com>
On Fri, 2004-05-21 at 16:42, Brett E. wrote:
> Right now, 5 processes are running taking up a good deal of the CPU
> doing memory-intensive work(cacheing) and I notice that none of the
> processes seem to have CPU affinity.
I don't know what kind of system you're running on, but if it's a
multi-CPU Opteron, it is normally a sufficient fudge to just use
sched_setaffinity to bind individual processes to specific CPUs. The
mainline kernel memory allocator does the right thing in that case, and
allocates memory locally when it can.
You can use the taskset command to get at this from the command line, so
you may not even need to modify your code.
<b
next prev parent reply other threads:[~2004-05-23 0:29 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <1Y6yr-eM-11@gated-at.bofh.it>
[not found] ` <1YbRm-4iF-11@gated-at.bofh.it>
[not found] ` <1Yma3-4cF-3@gated-at.bofh.it>
[not found] ` <1YmjP-4jX-37@gated-at.bofh.it>
2004-05-21 19:17 ` How can I optimize a process on a NUMA architecture(x86-64 specifically)? Andi Kleen
[not found] ` <1YmMN-4Kh-17@gated-at.bofh.it>
[not found] ` <1Yn67-50q-7@gated-at.bofh.it>
2004-05-21 19:19 ` Andi Kleen
2004-05-21 20:32 ` Martin J. Bligh
2004-05-21 23:42 ` Brett E.
2004-05-22 6:13 ` Martin J. Bligh
2004-05-22 7:41 ` Andi Kleen
2004-05-23 0:28 ` Bryan O'Sullivan [this message]
2004-05-23 14:28 ` Andi Kleen
2004-05-24 22:00 ` Andrew Theurer
2004-05-25 0:27 ` Scott Robert Ladd
2004-05-25 1:09 ` Brett E.
[not found] ` <1YRnC-3vk-5@gated-at.bofh.it>
2004-05-23 11:57 ` Andi Kleen
2004-05-21 0:51 Brett E.
2004-05-21 1:29 ` Jesse Barnes
2004-05-21 6:37 ` Martin J. Bligh
2004-05-21 17:27 ` Brett E.
2004-05-21 17:46 ` Martin J. Bligh
2004-05-21 18:14 ` Brett E.
2004-05-21 18:30 ` Martin J. Bligh
2004-05-21 18:58 ` Jesse Barnes
2004-05-21 19:08 ` Martin J. Bligh
2004-05-23 2:49 ` David Schwartz
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