From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758416AbXJZKEb (ORCPT ); Fri, 26 Oct 2007 06:04:31 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751077AbXJZKEX (ORCPT ); Fri, 26 Oct 2007 06:04:23 -0400 Received: from [202.201.0.146] ([202.201.0.146]:60356 "HELO eyou.net" rhost-flags-FAIL-FAIL-OK-FAIL) by vger.kernel.org with SMTP id S1753393AbXJZKEW (ORCPT ); Fri, 26 Oct 2007 06:04:22 -0400 X-EYOU-SPAMVALUE: 0 X-EYOU-DEALDRC: Message-ID: <393455391.26095@eyou.net> X-EYOUMAIL-SMTPAUTH: wangbj@lzu.edu.cn From: "Wang, Baojun" Organization: dslab To: Mike Galbraith , linux-kernel@vger.kernel.org Subject: Re: kernel 2.6.23 CFS problem? Date: Fri, 26 Oct 2007 18:04:26 +0800 User-Agent: KMail/1.9.7 References: <200710261057.48179.wangbj@lzu.edu.cn> <200710261532.22265.wangbj@lzu.edu.cn> <393390073.22773@lzu.edu.cn> In-Reply-To: <393390073.22773@lzu.edu.cn> MIME-Version: 1.0 Content-Type: multipart/signed; boundary="nextPart1424560.IQlMfqgZxL"; protocol="application/pgp-signature"; micalg=pgp-sha1 Content-Transfer-Encoding: 7bit Message-Id: <200710261804.29136.wangbj@lzu.edu.cn> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org --nextPart1424560.IQlMfqgZxL Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable Content-Disposition: inline On Friday 26 October 2007 17:05:42, you wrote=EF=BC=9A > On Fri, 2007-10-26 at 15:32 +0800, Wang, Baojun wrote: > > > Perhaps he has any tasks stuck in 'D' state? If so, SysRq-t output f= or > > > these would be a good thing to collect. What leads him to suspect the > > > process scheduler, etc. More details are needed. > > > > The task is S+ state, please see in the attachment tarball, SysRq-t > > output has also been attached, I wish it would help. I doubt it's the C= =46S > > problem because it's first introduced into the 2.6.23 kernel. > > (yeah, but there were a truckload of other changes as well) > > Looking at your data, _my_ first suspect would be the 2.6.22->2.6.23 > futex changes. I'd revert all of the changes to kernel/futex.c and > kernel/futex_compat.c, and see if the problem went away. If it didn't, > I'd then do a full git bisect to nail it down. > > -Mike Thanks very much, also my glibc (2.6.1) is built under 2.6.23 (but not=20 linux-headers, which is 2.6.22). but I've tried right now (install ELDK4.1)= =20 on another x86_64 machine, without any problem (x86_64, Core2Duo E6600, 4G= =20 RAM) Wang =2D-=20 Wang, Baojun =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2= =A0Lanzhou University Distributed & Embedded System Lab =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0http://dslab.lzu.edu.cn School of Information Science and Engeneering =C2=A0 =C2=A0 =C2=A0 =C2=A0wa= ngbj@lzu.edu.cn Tianshui South Road 222. Lanzhou 730000 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 = =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 .P.R.China Tel:+86-931-8912025 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0= =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0 =C2=A0Fax:+86-931-8912022 --nextPart1424560.IQlMfqgZxL Content-Type: application/pgp-signature; name=signature.asc Content-Description: This is a digitally signed message part. -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.7 (GNU/Linux) iD8DBQBHIbuqIuIOr7tpgg0RAkuiAJ9P7TBTkXdyC+dmO3w+EEfigK/sBACfXePk NtuzzKP52yscLp9gFfVWtrI= =wIdN -----END PGP SIGNATURE----- --nextPart1424560.IQlMfqgZxL--