Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752634AbXFDGkG (ORCPT ); Mon, 4 Jun 2007 02:40:06 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1752008AbXFDGjx (ORCPT ); Mon, 4 Jun 2007 02:39:53 -0400 Received: from www.osadl.org ([213.239.205.134]:58345 "EHLO mail.tglx.de" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751944AbXFDGjv (ORCPT ); Mon, 4 Jun 2007 02:39:51 -0400 Subject: Re: b44: regression in 2.6.22 (resend) From: Thomas Gleixner To: Maximilian Engelhardt Cc: Michael Buesch , linux-kernel , linux-wireless , Stephen Hemminger , Arnaldo Carvalho de Melo , Jeff Garzik , Gary Zambrano , netdev@vger.kernel.org, Andrew Morton In-Reply-To: <200706031826.06891.maxi@daemonizer.de> References: <20070525172431.60affaca@freepuppy> <200705281944.05030.maxi@daemonizer.de> <1180380230.3657.3.camel@chaos> <200706031826.06891.maxi@daemonizer.de> Content-Type: text/plain Date: Mon, 04 Jun 2007 08:39:48 +0200 Message-Id: <1180939188.4404.5.camel@chaos> Mime-Version: 1.0 X-Mailer: Evolution 2.10.1 (2.10.1-4.fc7) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1219 Lines: 30 On Sun, 2007-06-03 at 18:26 +0200, Maximilian Engelhardt wrote: > > Is there any other strange behavior of the high res enabled kernel than > > the b44 problem ? > > I didn't notice anything in the past (as I wrote). But today I did some tests > for an updated version of the p54 mac80211 wlan driver and I noticed exactly > the same problem: > > when booting with highres=off everything is fine. > But when I boot an highres enabled kernel and I do the iperf-test with the p54 > driver, my systems becomes unresponsive during the test. It seems to be > exactly the same problem I have with the b44 driver. > So this might not be a bug in the b44 code but a bug somewhere in the linux > networking code. > > I did the test with an 2.6.22-rc3-git4 kernel and the p54 driver built > external as module. Can you look at iperf to figure out, whether it does some weird timer stuff (high frequency interval timer or such) ? Either check the code or strace it. tglx - 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/