From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262589AbTJXURh (ORCPT ); Fri, 24 Oct 2003 16:17:37 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262591AbTJXURh (ORCPT ); Fri, 24 Oct 2003 16:17:37 -0400 Received: from fw.osdl.org ([65.172.181.6]:43183 "EHLO mail.osdl.org") by vger.kernel.org with ESMTP id S262589AbTJXURf (ORCPT ); Fri, 24 Oct 2003 16:17:35 -0400 Date: Fri, 24 Oct 2003 13:17:31 -0700 From: cliff white To: Nick Piggin Cc: linux-kernel@vger.kernel.org Subject: Re: Nick's scheduler v17 Message-Id: <20031024131731.29ae599a.cliffw@osdl.org> In-Reply-To: <3F996B10.4080307@cyberone.com.au> References: <3F996B10.4080307@cyberone.com.au> Organization: OSDL X-Mailer: Sylpheed version 0.9.6 (GTK+ 1.2.9; i686-pc-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sat, 25 Oct 2003 04:10:24 +1000 Nick Piggin wrote: > Hi, > http://www.kerneltrap.org/~npiggin/v17/ > > Still working on SMP and NUMA. Some (maybe) interesting things I put in are > - Sequential CPU balancing so you don't get a big storm of balances > every 1/4s. > - Balancing is trying to err more on the side of caution, I have to start > analysing it more thoroughly though. > - Attacked the NUMA balancing code. There should now be less buslocked ops / > cache pingpongs in some fastpaths. Volanomark likes it, more realistic > loads > won't improve so much http://www.kerneltrap.org/~npiggin/v17/volano.png > This improvement is NUMA only. > > I haven't had time to reproduce Cliff's serious reaim performance > dropoffs so > they're probably still there. I couldn't reproduce Martin's kernbench > dropoff, > but the 16-way I'm using only has 512K cache which might not show it up. > Okay, i put both v17 patches in the OSDL Patch Lifecycle Manager ( http://www.osdl.org/plm-cgi/plm/ ) sched-v17 is PLM #2251 sched-nopolicy-v17 is PLM #2252 Results asap. cliffw > > - > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ > -- The church is near, but the road is icy. The bar is far, but i will walk carefully. - Russian proverb