Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756356AbZFMGQI (ORCPT ); Sat, 13 Jun 2009 02:16:08 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751491AbZFMGP4 (ORCPT ); Sat, 13 Jun 2009 02:15:56 -0400 Received: from casper.infradead.org ([85.118.1.10]:58482 "EHLO casper.infradead.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751042AbZFMGP4 (ORCPT ); Sat, 13 Jun 2009 02:15:56 -0400 Date: Fri, 12 Jun 2009 23:16:27 -0700 From: Arjan van de Ven To: "Trenton D. Adams" Cc: Theodore Tso , Linux Kernel Mailing List Subject: Re: IO latency - a special case Message-ID: <20090612231627.1222f526@infradead.org> In-Reply-To: <9b1675090906122251y43476b23wd3593927e3b792c2@mail.gmail.com> References: <9b1675090904041103v477913a5of06fa5c10ebee05f@mail.gmail.com> <9b1675090904042117k77463227y66a872d52d027e7e@mail.gmail.com> <9b1675090904042125g708076e6v665f5ecc7fa020a4@mail.gmail.com> <9b1675090904042313rb8178b6v1da3aeddfa57a869@mail.gmail.com> <20090405062626.GA7760@mit.edu> <9b1675090904051542o42a0ca11y1ce3b691ed6d8ebb@mail.gmail.com> <9b1675090906062014h2ce44d8apc50f73aa036d9139@mail.gmail.com> <20090611191152.GD16787@mit.edu> <9b1675090906122048o35698c09x13cc7cf7650ac9ae@mail.gmail.com> <20090612212414.1ae5a284@infradead.org> <9b1675090906122251y43476b23wd3593927e3b792c2@mail.gmail.com> Organization: Intel X-Mailer: Claws Mail 3.7.0 (GTK+ 2.14.7; i386-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit X-SRS-Rewrite: SMTP reverse-path rewritten from by casper.infradead.org See http://www.infradead.org/rpr.html Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1453 Lines: 32 On Fri, 12 Jun 2009 23:51:19 -0600 "Trenton D. Adams" wrote: > > Right now, just during normal system usage, it's showing... > Cause Maximum > Percentage poll_schedule_timeout do_sys_poll sys_poll sysente 5.0 > msec 58.0 % futex_wait do_futex compat_sys_futex > sysenter_disp 5.0 msec 40.3 % blk_execute_rq scsi_execute > scsi_execute_req scsi_ 3.9 msec 0.2 % blk_execute_rq > scsi_execute scsi_execute_req sd_re 3.5 msec 0.2 % > poll_schedule_timeout do_select core_sys_select sy 3.4 msec > 0.3 % blk_execute_rq scsi_execute scsi_execute_req sr_te 2.6 > msec 0.5 % blk_execute_rq scsi_execute scsi_execute_req > sr_te 2.2 msec 0.5 % blk_execute_rq scsi_execute > sr_do_ioctl sr_packet 0.9 msec 0.1 % blk_execute_rq > scsi_execute scsi_execute_req ioctl 0.6 msec 0.0 % release > __blkdev_put blkdev_put blkdev_close __fput this shows it's not correctly installed.... (and it's likely an older version) -- Arjan van de Ven Intel Open Source Technology Centre For development, discussion and tips for power savings, visit http://www.lesswatts.org -- 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/