From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <3E4DEB72.4010405@cyberone.com.au> Date: Sat, 15 Feb 2003 18:25:38 +1100 From: Nick Piggin MIME-Version: 1.0 Subject: Re: 2.5.61-mm1 References: <20030214231356.59e2ef51.akpm@digeo.com> Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Andrew Morton Cc: linux-kernel@vger.kernel.org, linux-mm@kvack.org List-ID: Andrew Morton wrote: >http://www.kernel.org/pub/linux/kernel/people/akpm/patches/2.5/2.5.61/2.5.61-mm1/ > >. Jens has fixed the request queue aliasing problem and we are no longer > able to break the IO scheduler. This was preventing the OSDL team from > running dbt2 against recent kernels, so hopefully that is all fixed up now. > >. The anticipatory scheduler is performing well. I've included that now. > And for those interested, if you find unusual IO performance, please try disabling AS and reporting results. Thanks. echo 0 > /sys/block/?/iosched/antic_expire This value defaults to 10 (ms). More than around 20 might do funny though not harmful stuff due to a fragile bitshift. Nick -- 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: aart@kvack.org