Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753729AbYJCWqc (ORCPT ); Fri, 3 Oct 2008 18:46:32 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752646AbYJCWqX (ORCPT ); Fri, 3 Oct 2008 18:46:23 -0400 Received: from www.sr71.net ([198.145.64.142]:52769 "EHLO blackbird.sr71.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750785AbYJCWqW (ORCPT ); Fri, 3 Oct 2008 18:46:22 -0400 Subject: Re: USB disconnects every 30 seconds (2.6.27-rc8) From: Dave Hansen To: Thomas Gleixner Cc: Alan Stern , gregkh , "linux-kernel@vger.kernel.org" , USB list In-Reply-To: References: Content-Type: text/plain Date: Fri, 03 Oct 2008 15:46:15 -0700 Message-Id: <1223073975.7944.67.camel@nimitz> Mime-Version: 1.0 X-Mailer: Evolution 2.22.3.1 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1043 Lines: 28 On Sat, 2008-10-04 at 00:24 +0200, Thomas Gleixner wrote: > On Fri, 3 Oct 2008, Alan Stern wrote: > > On Fri, 3 Oct 2008, Dave Hansen wrote: > > There are a number of other places in the trace where delays are > > shorter than they should be. This is out of my area of expertise, so > > I'm CC'ing Thomas Gleixner. With luck he'll be able to help. > > > > Thomas, the background for this problem is available here: > > > > http://marc.info/?l=linux-kernel&m=122305738430115&w=2 > > Is NOHZ and HIGHRES disabled on those kernels? Hugh spotted a typo in > that code today. Fix is below. It causes jiffies to increment too fast > which explains your short delays. Here's my config: http://sr71.net/~dave/linux/config-10-03-2008.1.txt No NOHZ or HIGHRES. Is that what you meant? -- Dave -- 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/