From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755222Ab0IIXo5 (ORCPT ); Thu, 9 Sep 2010 19:44:57 -0400 Received: from mail-bw0-f46.google.com ([209.85.214.46]:64103 "EHLO mail-bw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752080Ab0IIXo4 (ORCPT ); Thu, 9 Sep 2010 19:44:56 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; b=bg7g3ry151iyI9wvexFu3bhDe9nmUkDTwtIkGEodFUVbZyBhfwnGigpXqW1uEXf7/N kvtDTCvredShpgctX72Cp9xf+kYBZ3Aitp+Y/HUXmfO95XOla49ndE67jrP2ZKS5n5bR q+LBJgHgkP5F2ovrrh33dSNB/HrDkwfM/ypMI= MIME-Version: 1.0 In-Reply-To: <87wrqu8s1u.fsf_-_@spindle.srvr.nix> References: <87zkvx2ese.fsf@spindle.srvr.nix> <20100906053255.GA23340@brouette> <87iq2gyllg.fsf@spindle.srvr.nix> <87wrqu8s1u.fsf_-_@spindle.srvr.nix> Date: Thu, 9 Sep 2010 19:44:55 -0400 Message-ID: Subject: Re: [BISECTED] 2.6.35.*: horrible (exponential? >linear) slowdown to unusability (HPET) From: John Drescher To: Nix Cc: Thomas Gleixner , Venkatesh Pallipadi , Damien Wyart , linux-kernel@vger.kernel.org Content-Type: text/plain; charset=ISO-8859-1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org > John, Damien, you seem to be experiencing this: are you using HPET as > your clocksource? Do you also have ICH10 82801JIs, or is this more > widespread? > I am not using hpet as my clocksource. jmd1 ~ # uname -a Linux jmd1 2.6.35-std160-amd64 #2 SMP Fri Aug 13 18:42:02 UTC 2010 x86_64 Intel(R) Core(TM) i7 CPU 920 @ 2.67GHz GenuineIntel GNU/Linux jmd1 ~ # cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc I do have ICH10 82801JI jmd1 ~ # lspci -v | grep 82801JI 00:1a.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #4 00:1a.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #5 00:1a.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #6 00:1a.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 (prog-if 20 [EHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #2 00:1b.0 Audio device: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller Subsystem: Intel Corporation 82801JI (ICH10 Family) HD Audio Controller 00:1c.0 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 (prog-if 00 [Normal decode]) Capabilities: [90] Subsystem: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 1 00:1c.1 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2 (prog-if 00 [Normal decode]) Capabilities: [90] Subsystem: Intel Corporation 82801JI (ICH10 Family) PCI Express Port 2 00:1c.2 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 3 (prog-if 00 [Normal decode]) Capabilities: [90] Subsystem: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 3 00:1c.4 PCI bridge: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 (prog-if 00 [Normal decode]) Capabilities: [90] Subsystem: Intel Corporation 82801JI (ICH10 Family) PCI Express Root Port 5 00:1d.0 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #1 00:1d.1 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #2 00:1d.2 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 (prog-if 00 [UHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB UHCI Controller #3 00:1d.7 USB Controller: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 (prog-if 20 [EHCI]) Subsystem: Intel Corporation 82801JI (ICH10 Family) USB2 EHCI Controller #1 00:1f.0 ISA bridge: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller Subsystem: Intel Corporation 82801JIR (ICH10R) LPC Interface Controller 00:1f.2 SATA controller: Intel Corporation 82801JI (ICH10 Family) SATA AHCI Controller (prog-if 01 [AHCI 1.0]) 00:1f.3 SMBus: Intel Corporation 82801JI (ICH10 Family) SMBus Controller Subsystem: Intel Corporation 82801JI (ICH10 Family) SMBus Controller jmd1 ~ #