Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755442Ab0HCG4F (ORCPT ); Tue, 3 Aug 2010 02:56:05 -0400 Received: from ksp.mff.cuni.cz ([195.113.26.206]:36947 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1755238Ab0HCG4B (ORCPT ); Tue, 3 Aug 2010 02:56:01 -0400 Date: Tue, 3 Aug 2010 08:55:43 +0200 From: Pavel Machek To: Nigel Cunningham Cc: "Rafael J. Wysocki" , Linux PM , LKML , TuxOnIce-devel Subject: Re: Nigel's current for-rafael queue Message-ID: <20100803065543.GF3344@ucw.cz> References: <1275481160-31150-1-git-send-email-nigel@tuxonice.net> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1275481160-31150-1-git-send-email-nigel@tuxonice.net> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 957 Lines: 23 On Wed 2010-06-02 22:18:59, Nigel Cunningham wrote: > Hi all. > > Here is my current patch queue. > > Taken together, the patches implement the separation of low level > block i/o into a separate file, switch from using swap_map_pages > to extents stores prior to the 'header' page and implement fully > asynchronous (rather than batched I/O). I have only run it under > VMware so far, but would estimate a doubling in speed due to the > async i/o. Do you have any numbers from real hw? Could similar speedup be accomplished by just increasing the batch size? Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- 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/