From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Tue, 29 Jul 2008 22:04:16 +0900 From: KOSAKI Motohiro Subject: Re: PERF: performance tests with the split LRU VM in -mm In-Reply-To: <20080724222510.3bbbbedc@bree.surriel.com> References: <20080724222510.3bbbbedc@bree.surriel.com> Message-Id: <20080729220012.F192.KOSAKI.MOTOHIRO@jp.fujitsu.com> MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Rik van Riel Cc: kosaki.motohiro@jp.fujitsu.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, akpm@linux-foundation.org List-ID: > TEST 1: dd if=/dev/sda of=/dev/null bs=1M > > kernel speed swap used > > 2.6.26 111MB/s 500kB > -mm 110MB/s 59MB (ouch, system noticably slower) > noforce 111MB/s 128kB > stream 108MB/s 0 (slight regression, not sure why yet) I tried to reproduce it, my ia64 result was kernel speed swap used 2.6.26-rc8 49.8MB/s 1M 2.6.26-rc8-mm1 47.6MB/s 168M -mm with above two patch 50.2MB/s 0 So, I think it isn't regression. -- 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