From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with SMTP id 0A15F6B00EE for ; Fri, 29 Jul 2011 11:24:49 -0400 (EDT) Date: Fri, 29 Jul 2011 10:24:45 -0500 (CDT) From: Christoph Lameter Subject: Re: [GIT PULL] SLAB changes for v3.1-rc0 In-Reply-To: Message-ID: References: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org List-ID: To: David Rientjes Cc: Pekka Enberg , Linus Torvalds , Andrew Morton , linux-kernel@vger.kernel.org, linux-mm@kvack.org On Thu, 28 Jul 2011, David Rientjes wrote: > On Thu, 28 Jul 2011, Pekka Enberg wrote: > > > Christoph, your debugging fix has been in linux-next for few days now > > and no problem have been reported. I'm considering sending the series > > to Linus. What do you think? > > > > I ran slub/lockless through some stress testing and it seems to be quite > stable on my testing cluster. There is about a 2.3% performance > improvement with the lockless slowpath on the netperf benchmark with > various thread counts on my 16-core 64GB Opterons, so I'd recommend it to > be merged into 3.1. Great. Could you also test the next stage of patches (not yet even in Pekka's tree) where we add a per cpu cache of partial allocated slab pages? This decreases the per node lock contention further. I can repost the set if the old one does not work for you. Shows significant improvement here as well. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org