Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932323AbZAPKQt (ORCPT ); Fri, 16 Jan 2009 05:16:49 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1759359AbZAPKQg (ORCPT ); Fri, 16 Jan 2009 05:16:36 -0500 Received: from fg-out-1718.google.com ([72.14.220.156]:39995 "EHLO fg-out-1718.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759316AbZAPKQd (ORCPT ); Fri, 16 Jan 2009 05:16:33 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:sender:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references:x-google-sender-auth; b=peyua+6/v9mRk+Hix/QYbbcWhnLqtNrNwpxAygP5arFZWmn/BX9Nittq355BjyI4fi aM3D25ni+k/aaTkbQ+1qj4iWOG4/Tbzn8salk5KWgummTyPgo/4LgH9TJe8Pw0TEQmpr mFXBZQdZ/SORub4DJTvhZHBkFegwdhHI8SS/0= Message-ID: <84144f020901160216q17f1b558q955d5b8fb7c528c0@mail.gmail.com> Date: Fri, 16 Jan 2009 12:16:31 +0200 From: "Pekka Enberg" To: "Matthew Wilcox" Subject: Re: Mainline kernel OLTP performance update Cc: "Nick Piggin" , "Andrew Morton" , "Wilcox, Matthew R" , chinang.ma@intel.com, linux-kernel@vger.kernel.org, sharad.c.tripathi@intel.com, arjan@linux.intel.com, andi.kleen@intel.com, suresh.b.siddha@intel.com, harita.chilukuri@intel.com, douglas.w.styner@intel.com, peter.xihong.wang@intel.com, hubert.nueckel@intel.com, chris.mason@oracle.com, srostedt@redhat.com, linux-scsi@vger.kernel.org, "Andrew Vasquez" , "Anirban Chakraborty" , "Christoph Lameter" In-Reply-To: <20090115135236.GB29283@parisc-linux.org> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <20090115012147.GW29283@parisc-linux.org> <20090114180431.f4a96543.akpm@linux-foundation.org> <200901151824.38658.nickpiggin@yahoo.com.au> <84144f020901150146x72402ec4p7636d583cfd55b3e@mail.gmail.com> <20090115135236.GB29283@parisc-linux.org> X-Google-Sender-Auth: 7887fc88dcb6c9d1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1377 Lines: 33 On Thu, Jan 15, 2009 at 11:46:09AM +0200, Pekka Enberg wrote: >> It would also be nice if someone could do the performance analysis on >> the SLUB bug. I ran sysbench in oltp mode here and the results look >> like this: >> >> [ number of transactions per second from 10 runs. ] >> >> min max avg sd >> 2.6.29-rc1-slab 833.77 852.32 845.10 4.72 >> 2.6.29-rc1-slub 823.61 851.94 836.74 8.57 >> >> And no, the numbers are not flipped, SLUB beats SLAB here. :( On Thu, Jan 15, 2009 at 3:52 PM, Matthew Wilcox wrote: > Um. More transactions per second is good. Your numbers show SLAB > beating SLUB (even on your dual-CPU system). And SLAB shows a lower > standard deviation, which is also good. I had lockdep enabled in my config so I ran the tests again with x86-64 defconfig and I'm back to square one: [ number of transactions per second from 10 runs, bigger is better ] min max avg sd 2.6.29-rc1-slab 802.02 805.37 803.93 0.97 2.6.29-rc1-slub 807.78 811.20 809.86 1.05 Pekka -- 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/