From mboxrd@z Thu Jan 1 00:00:00 1970 From: "KOSAKI Motohiro" Subject: Re: No, really, stop trying to delete slab until you've finished making slub perform as well Date: Thu, 14 Aug 2008 00:05:54 +0900 Message-ID: <2f11576a0808130805s6963e2a4mbb82ad7221cf80a2@mail.gmail.com> References: <20080805210125.A897.KOSAKI.MOTOHIRO@jp.fujitsu.com> <48986AC6.5030406@linux-foundation.org> <20080813194222.E77F.KOSAKI.MOTOHIRO@jp.fujitsu.com> <48A2DD2C.3090602@linux-foundation.org> <2f11576a0808130714k2cd031c4nd6eea3506831cac9@mail.gmail.com> <48A2F030.9080301@linux-foundation.org> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Cc: "Matthew Wilcox" , "Pekka Enberg" , akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org, "Mel Gorman" , andi@firstfloor.org, "Rik van Riel" To: "Christoph Lameter" Return-path: Received: from yx-out-2324.google.com ([74.125.44.30]:38511 "EHLO yx-out-2324.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752557AbYHMPF4 (ORCPT ); Wed, 13 Aug 2008 11:05:56 -0400 Received: by yx-out-2324.google.com with SMTP id 8so17072yxm.1 for ; Wed, 13 Aug 2008 08:05:55 -0700 (PDT) In-Reply-To: <48A2F030.9080301@linux-foundation.org> Content-Disposition: inline Sender: linux-fsdevel-owner@vger.kernel.org List-ID: > Yes but running with this patch would allow us to verify that we understand > what is causing the problem. There are other solutions like skipping to the > next partial slab on the list that could fix performance issues that the patch > may cause. A test will give us: > > 1. Confirmation that the memory use is caused by the trylock. > > 2. Some performance numbers. If these show a regression then we have some > markers that we can measure other solutions against. okey. I will confirm its patch at next week. (unfortunately, my company don't business in rest this week) Thanks.