From mboxrd@z Thu Jan 1 00:00:00 1970 From: Christoph Lameter Subject: Re: No, really, stop trying to delete slab until you've finished making slub perform as well Date: Wed, 06 Aug 2008 09:24:24 -0500 Message-ID: <4899B418.9050509@linux-foundation.org> References: <2f11576a0808040947r69076eecv9ff92ecf583f7af2@mail.gmail.com> <489738CF.7090401@linux-foundation.org> <20080805210125.A897.KOSAKI.MOTOHIRO@jp.fujitsu.com> <48986AC6.5030406@linux-foundation.org> <2f11576a0808060536o53cabb93m6387d35e3e5791be@mail.gmail.com> 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: KOSAKI Motohiro Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:46193 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755411AbYHFOZO (ORCPT ); Wed, 6 Aug 2008 10:25:14 -0400 In-Reply-To: <2f11576a0808060536o53cabb93m6387d35e3e5791be@mail.gmail.com> Sender: linux-fsdevel-owner@vger.kernel.org List-ID: KOSAKI Motohiro wrote: >>>> Can you quantify the difference? >>> machine spec: >>> CPU: IA64 x 8 >>> MEM: 8G (4G x2node) >> 16k or 64k page size? > > 64k. > > >>> So, about 2.5G - 3G difference in 8G mem. >> Well not sure if that tells us much. Please show us the output of >> /proc/meminfo after each run. The slab counters indicate how much memory is >> used by the slabs. >> >> It would also be interesting to see the output of the slabinfo command after >> the slub run? > > ok. > but i can't do that in this week. > so, I'll do it in next week. > > honestly, I don't know how to use slabinfo command :-) Its in linux/Documentation/vm/slabinfo.c Do gcc -o slabinfo Documentation/vm/slabinfo.c ./slabinfo (./slabinfo -h if you are curious and want to use more advanced options)