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 563FB6B01B2 for ; Sun, 27 Jun 2010 23:31:06 -0400 (EDT) Date: Mon, 28 Jun 2010 13:30:54 +1000 From: Nick Piggin Subject: Re: Slow vmalloc in 2.6.35-rc3 Message-ID: <20100628033054.GL29809@laptop> References: <4C232324.7070305@redhat.com> <20100624151427.GH10441@laptop> <4C271736.5010102@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <4C271736.5010102@redhat.com> Sender: owner-linux-mm@kvack.org To: Avi Kivity Cc: linux-kernel , KVM list , Andrew Morton , linux-mm@kvack.org List-ID: On Sun, Jun 27, 2010 at 12:17:42PM +0300, Avi Kivity wrote: > On 06/24/2010 06:14 PM, Nick Piggin wrote: > >On Thu, Jun 24, 2010 at 12:19:32PM +0300, Avi Kivity wrote: > >>I see really slow vmalloc performance on 2.6.35-rc3: > >Can you try this patch? > >http://userweb.kernel.org/~akpm/mmotm/broken-out/mm-vmap-area-cache.patch > > The patch completely eliminates the problem. Thanks for testing. Andrew the patch changelog can be updated. Avi and Steven didn't give me numbers but it solves both their performance regressions, so I would say it is ready for merging. Thanks, Nick -- 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/ . Don't email: email@kvack.org