LKML Archive on lore.kernel.org
help / color / mirror / Atom feed
From: "Martin J. Bligh" <mbligh@aracnet.com>
To: brettspamacct@fastclick.com,
	linux-kernel mailing list <linux-kernel@vger.kernel.org>
Subject: Re: How can I optimize a process on a NUMA architecture(x86-64 specifically)?
Date: Thu, 20 May 2004 23:37:34 -0700	[thread overview]
Message-ID: <273180000.1085121453@[10.10.2.4]> (raw)
In-Reply-To: <40AD52A4.3060607@fastclick.com>

> Say you have a bunch of single-threaded processes on a NUMA machine. 
> Does the kernel make sure to prefer allocations using a certain CPU's 
> memory, preferring to run a given process on the CPU which contains 
> its memory?  Or should I use the NUMA API(libnuma) to spell this out 
> to the kernel? Does the kernel do the right thing in this case?

The kernel will generally do the right thing (process local alloc) by
default. In 99% of cases, you don't want to muck with it - unless you're
running one single app dominating the whole system, and nothing else is
going on, you probably don't want to specify anything explicitly.

M.


  parent reply	other threads:[~2004-05-21  6:37 UTC|newest]

Thread overview: 22+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-05-21  0:51 Brett E.
2004-05-21  1:29 ` Jesse Barnes
2004-05-21  6:37 ` Martin J. Bligh [this message]
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
     [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       ` 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
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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to='273180000.1085121453@[10.10.2.4]' \
    --to=mbligh@aracnet.com \
    --cc=brettspamacct@fastclick.com \
    --cc=linux-kernel@vger.kernel.org \
    --subject='Re: How can I optimize a process on a NUMA architecture(x86-64 specifically)?' \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).