From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751282AbWCOVp7 (ORCPT ); Wed, 15 Mar 2006 16:45:59 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751327AbWCOVp7 (ORCPT ); Wed, 15 Mar 2006 16:45:59 -0500 Received: from viper.oldcity.dca.net ([216.158.38.4]:24532 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S1751282AbWCOVp7 (ORCPT ); Wed, 15 Mar 2006 16:45:59 -0500 Subject: Re: libata/sata_nv latency on NVIDIA CK804 [was Re: AMD64 X2 lost ticks on PM timer] From: Lee Revell To: "Bill Rugolsky Jr." Cc: Andi Kleen , Jeff Garzik , Jason Baron , linux-kernel@vger.kernel.org, john stultz , Ingo Molnar In-Reply-To: <20060315213638.GA17817@ti64.telemetry-investments.com> References: <200602280022.40769.darkray@ic3man.com> <4408BEB5.7000407@garzik.org> <20060303234330.GA14401@ti64.telemetry-investments.com> <200603040107.27639.ak@suse.de> <20060315213638.GA17817@ti64.telemetry-investments.com> Content-Type: text/plain Date: Wed, 15 Mar 2006 16:45:51 -0500 Message-Id: <1142459152.1671.64.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.6.0 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 2006-03-15 at 16:36 -0500, Bill Rugolsky Jr. wrote: > <...>-2913 0d.h. 9us : ata_host_intr (nv_interrupt) > <...>-2913 0d.h. 9us!: ata_bmdma_status (ata_host_intr) > <...>-2913 0d.h. 16641us : nv_check_hotplug_ck804 (nv_interrupt) > <...>-2913 0d.h. 16642us : _spin_unlock_irqrestore (nv_interrupt) There's your problem - it looks like ata_bmdma_status() stalled the machine for almost 17ms. Lee