From mboxrd@z Thu Jan 1 00:00:00 1970 Date: Mon, 25 Sep 2000 16:20:09 +0200 From: Andrea Arcangeli Subject: Re: [patch] vmfixes-2.4.0-test9-B2 Message-ID: <20000925162009.K22882@athlon.random> References: <20000925145856.A13011@athlon.random> <20000925154952.O26339@suse.de> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20000925154952.O26339@suse.de>; from axboe@suse.de on Mon, Sep 25, 2000 at 03:49:52PM +0200 Sender: owner-linux-mm@kvack.org Return-Path: To: Jens Axboe Cc: Ingo Molnar , Linus Torvalds , Rik van Riel , Roger Larsson , MM mailing list , linux-kernel@vger.kernel.org List-ID: On Mon, Sep 25, 2000 at 03:49:52PM +0200, Jens Axboe wrote: > And a new elevator was introduced some months ago to solve this. And now that I done some benchmark it seems the major optimization consists in the implementation of the new _ordering_ algorithm in test2, not really from the removal of the more finegrined latency control (said that I'm not going to reintroduce the previous latency control, the current one doesn't provide great latency but it's ok). As soon I patch my tree with Peter's perfect CSCAN ordering (that only changes the ordering algorithm), tiotest performance drops significantly in the 2-thread-reading case. elvtune settings doesn't matter, that's only a matter of the ordering. Andrea -- 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.eu.org/Linux-MM/