From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752339Ab0IOHIQ (ORCPT ); Wed, 15 Sep 2010 03:08:16 -0400 Received: from mail-ey0-f174.google.com ([209.85.215.174]:47093 "EHLO mail-ey0-f174.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751626Ab0IOHIP (ORCPT ); Wed, 15 Sep 2010 03:08:15 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:subject:date:user-agent:cc:references:in-reply-to :mime-version:content-type:content-transfer-encoding:message-id; b=dQHLUF5x/Q1kZ9lVvEN7C3ltsZ0b9tvc9a/9yWb2AjbnQnUNbNSD/1EnwBnDgds1IM f52HULiSmP7XsEvDtY+Xig7j0lvptXa//1rffMpl2+ZCvGertTaD1ZCtGO8yjJPOPkVv TVzOquSMPSxlGlprgbC3PcW4v5ITZgTKtT7z4= From: Vasily Khoruzhick To: Sitsofe Wheeler Subject: Re: Interrupt latency on some 945GM platforms Date: Wed, 15 Sep 2010 10:07:09 +0300 User-Agent: KMail/1.13.5 (Linux/2.6.35-gentoo-r5-anarsoul; KDE/4.5.1; i686; ; ) Cc: Thomas Gleixner , Venkatesh Pallipadi , Jesse Barnes , intel-gfx@lists.freedesktop.org, linux-kernel@vger.kernel.org References: <201009132336.17310.anarsoul@gmail.com> <201009141529.53179.anarsoul@gmail.com> <20100914224111.GA14467@sucs.org> In-Reply-To: <20100914224111.GA14467@sucs.org> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart2859747.OCWnCCh9yA"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <201009151007.14212.anarsoul@gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --nextPart2859747.OCWnCCh9yA Content-Type: Text/Plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable =D0=92 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D0=BE=D1=82 = 15 of September 2010 01:41:11 =D0=B0=D0=B2=D1=82=D0=BE=D1=80 Sitsofe Wheele= r =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB: > On Tue, Sep 14, 2010 at 03:29:48PM +0300, Vasily Khoruzhick wrote: > > =D0=92 =D1=81=D0=BE=D0=BE=D0=B1=D1=89=D0=B5=D0=BD=D0=B8=D0=B8 =D0=BE=D1= =82 14 of September 2010 12:52:57 =D0=B0=D0=B2=D1=82=D0=BE=D1=80 Thomas Gle= ixner=20 =D0=BD=D0=B0=D0=BF=D0=B8=D1=81=D0=B0=D0=BB: > > > Can you try with NOHZ enabled and the following on the kernel command= =20 line: > > > processor.max_cstate=3D1 > >=20 > > It works in this case (gears in glxgears move smoothly) > >=20 > > > If that works, then try > > >=20 > > > processor.max_cstate=3D2 > >=20 > > Nope, it doesn't work with max_cstate=3D2 >=20 > Perhaps intel_idle is being used? Any mention of it in dmesg? Nope, acpi_idle is being used, intel_idle doesn't support my CPU (it's c2d= =20 t5500): [ 0.653279] intel_idle: does not run on family 6 model 15 Regards Vasily --nextPart2859747.OCWnCCh9yA Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.16 (GNU/Linux) iEYEABECAAYFAkyQcKIACgkQRM6pQpltKE7cxACfXLp0iVRlxazmUnJINtstDaPw ETQAn0k7uo7Udgqt6VUkH8f67kHfE9RQ =Odja -----END PGP SIGNATURE----- --nextPart2859747.OCWnCCh9yA--