From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755539Ab1CXVQy (ORCPT ); Thu, 24 Mar 2011 17:16:54 -0400 Received: from smtp-out.google.com ([216.239.44.51]:28074 "EHLO smtp-out.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752397Ab1CXVQx (ORCPT ); Thu, 24 Mar 2011 17:16:53 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=google.com; s=beta; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc:content-type; b=DwoHvJbRserdmVN2DVK4uzU8eWtjsE4TdZz1Z4XcYksGjvh0VrxHN4JD8HPauHfH/l vYyGC/bVA9FpCHXf/New== MIME-Version: 1.0 In-Reply-To: References: From: Paul Menage Date: Thu, 24 Mar 2011 14:16:27 -0700 Message-ID: Subject: Re: Tests for cpusets and cgroup performance measurement To: Jaswinder Singh Cc: Linux Kernel Mailing List , Li Zefan , containers@lists.linux-foundation.org Content-Type: text/plain; charset=ISO-8859-1 X-System-Of-Record: true Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 22, 2011 at 10:42 PM, Jaswinder Singh wrote: > "Jobs on larger NUMA systems may see a performance boost if jobs can be > intelligently assigned to specific CPUs. Jobs may perform better if > striped across physical processors, or contained within the fewest > number of memory controllers." > > I am curious and want to try some simple tests so that I can see the > performance improvement by using cpusets on my PCs. > > Can you suggest some tests so that I can study them. Not particularly - I've never been involved in optimizing apps on large NUMA systems. Our uses of NUMA at Google have all involved faked-NUMA nodes, assigning nodes to jobs to provide crude memory limits. I suspect that there aren't very many "simple" tests out there. Google search for [hpc numa tuning] turns up a few likely pages that might have pointers to suitable applications. Paul