From mboxrd@z Thu Jan 1 00:00:00 1970 From: Marcelo Tosatti Subject: [patch 0/2] virtio-blk async IO (v3) Date: Thu, 05 Jun 2008 02:01:32 -0300 Message-ID: <20080605050132.103488517@localhost.localdomain> Cc: kvm@vger.kernel.org, "Gerd v. Egidy" To: Avi Kivity , Anthony Liguori Return-path: Received: from mx1.redhat.com ([66.187.233.31]:32879 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751402AbYFEFPH (ORCPT ); Thu, 5 Jun 2008 01:15:07 -0400 Sender: kvm-owner@vger.kernel.org List-ID: Resending the virtio-blk async patches, now that the reason for Gerd's hangs are known. The above results are on host hot-cached data, cold-cache data workloads are the real winners, where the current code waits until each read request is finished before submitting the next one. ide: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost.locald 2G 36618 88 107274 31 80361 49 44311 98 292436 94 +++++ +++ virtio-blk: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost.locald 2G 39738 89 108389 31 82313 48 43943 98 290500 94 +++++ +++ virtio-blk-async: Version 1.03 ------Sequential Output------ --Sequential Input- --Random- -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks-- Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP localhost.locald 2G 40781 92 102806 34 86887 36 44339 97 347461 78 +++++ +++ --