From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from psmtp.com (na3sys010amx133.postini.com [74.125.245.133]) by kanga.kvack.org (Postfix) with SMTP id 306C96B0005 for ; Fri, 1 Feb 2013 10:13:54 -0500 (EST) Received: from /spool/local by e36.co.us.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Fri, 1 Feb 2013 08:13:53 -0700 Received: from d03relay01.boulder.ibm.com (d03relay01.boulder.ibm.com [9.17.195.226]) by d03dlp03.boulder.ibm.com (Postfix) with ESMTP id E16E319D8043 for ; Fri, 1 Feb 2013 08:13:49 -0700 (MST) Received: from d03av03.boulder.ibm.com (d03av03.boulder.ibm.com [9.17.195.169]) by d03relay01.boulder.ibm.com (8.13.8/8.13.8/NCO v10.0) with ESMTP id r11FDatK236826 for ; Fri, 1 Feb 2013 08:13:37 -0700 Received: from d03av03.boulder.ibm.com (loopback [127.0.0.1]) by d03av03.boulder.ibm.com (8.14.4/8.13.1/NCO v10.0 AVout) with ESMTP id r11FDXj6019705 for ; Fri, 1 Feb 2013 08:13:34 -0700 Message-ID: <510BDB8F.5000104@linux.vnet.ibm.com> Date: Fri, 01 Feb 2013 09:13:19 -0600 From: Seth Jennings MIME-Version: 1.0 Subject: Re: [PATCHv4 0/7] zswap: compressed swap caching References: <1359495627-30285-1-git-send-email-sjenning@linux.vnet.ibm.com> <1359682784.3574.2.camel@kernel> In-Reply-To: <1359682784.3574.2.camel@kernel> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org List-ID: To: Simon Jeons Cc: Andrew Morton , Greg Kroah-Hartman , Nitin Gupta , Minchan Kim , Konrad Rzeszutek Wilk , Dan Magenheimer , Robert Jennings , Jenifer Hopper , Mel Gorman , Johannes Weiner , Rik van Riel , Larry Woodman , Benjamin Herrenschmidt , Dave Hansen , linux-mm@kvack.org, linux-kernel@vger.kernel.org, devel@driverdev.osuosl.org On 01/31/2013 07:39 PM, Simon Jeons wrote: > Hi Seth, > On Tue, 2013-01-29 at 15:40 -0600, Seth Jennings wrote: >> Performance, Kernel Building: >> >> Setup >> ======== >> Gentoo w/ kernel v3.7-rc7 >> Quad-core i5-2500 @ 3.3GHz >> 512MB DDR3 1600MHz (limited with mem=512m on boot) >> Filesystem and swap on 80GB HDD (about 58MB/s with hdparm -t) >> majflt are major page faults reported by the time command >> pswpin/out is the delta of pswpin/out from /proc/vmstat before and after >> then make -jN >> >> Summary >> ======== >> * Zswap reduces I/O and improves performance at all swap pressure levels. >> >> * Under heavy swaping at 24 threads, zswap reduced I/O by 76%, saving >> over 1.5GB of I/O, and cut runtime in half. > > How to get your benchmark? It's just kernel building. So "make" :) I intentionally choose this workload so people wouldn't have to jump through hoops to replicate the results. Seth -- 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