From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752466Ab0CWS06 (ORCPT ); Tue, 23 Mar 2010 14:26:58 -0400 Received: from mail-pw0-f46.google.com ([209.85.160.46]:48224 "EHLO mail-pw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751694Ab0CWS05 convert rfc822-to-8bit (ORCPT ); Tue, 23 Mar 2010 14:26:57 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=subject:mime-version:content-type:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to:x-mailer; b=KPO5aLHAat9LDiRG9p/s4QQ9CcyKMM3zdBW230pBZpd49/3v6kVv/KErGydapWopN4 9k+r0tHfOJcZNj98mWwESkgRrMVT4UaJSR9wAx5JXEjyCavf2/K0HKrCgw5+wUvR/CvX QVG46cf3MuekvG/M0MqzzNovlo0U3JMKdPQzw= Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=us-ascii From: Anton Starikov In-Reply-To: <20100323111351.756c8752.akpm@linux-foundation.org> Date: Tue, 23 Mar 2010 19:19:22 +0100 Cc: Ingo Molnar , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra Content-Transfer-Encoding: 8BIT Message-Id: <1BAC48C3-2AF2-4FA2-9762-85727068BF64@gmail.com> References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <20100323111351.756c8752.akpm@linux-foundation.org> To: Andrew Morton X-Mailer: Apple Mail (2.1077) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mar 23, 2010, at 7:13 PM, Andrew Morton wrote: > Anton, we have an executable binary in the bugzilla report but it would > be nice to also have at least a description of what that code is > actually doing. A quick strace shows quite a lot of mprotect activity. > A pseudo-code walkthrough, perhaps? Right now can't say too much about the code (we just gave a chance to neighbor group to run their code on our cluster, so I'm totally unfriendly with this code). I will forward your question to them. But probably right now you can get more information (including sources) here http://fmt.cs.utwente.nl/tools/ltsmin/ Anton From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id C456A6B01C7 for ; Tue, 23 Mar 2010 14:19:29 -0400 (EDT) Received: by pwj1 with SMTP id 1so4495830pwj.9 for ; Tue, 23 Mar 2010 11:19:27 -0700 (PDT) Subject: Re: [Bugme-new] [Bug 15618] New: 2.6.18->2.6.32->2.6.33 huge regression in performance Mime-Version: 1.0 (Apple Message framework v1077) Content-Type: text/plain; charset=us-ascii From: Anton Starikov In-Reply-To: <20100323111351.756c8752.akpm@linux-foundation.org> Date: Tue, 23 Mar 2010 19:19:22 +0100 Content-Transfer-Encoding: quoted-printable Message-Id: <1BAC48C3-2AF2-4FA2-9762-85727068BF64@gmail.com> References: <20100323102208.512c16cc.akpm@linux-foundation.org> <20100323173409.GA24845@elte.hu> <20100323111351.756c8752.akpm@linux-foundation.org> Sender: owner-linux-mm@kvack.org To: Andrew Morton Cc: Ingo Molnar , Linus Torvalds , linux-mm@kvack.org, linux-kernel@vger.kernel.org, bugzilla-daemon@bugzilla.kernel.org, bugme-daemon@bugzilla.kernel.org, Peter Zijlstra List-ID: On Mar 23, 2010, at 7:13 PM, Andrew Morton wrote: > Anton, we have an executable binary in the bugzilla report but it = would > be nice to also have at least a description of what that code is > actually doing. A quick strace shows quite a lot of mprotect = activity. > A pseudo-code walkthrough, perhaps? Right now can't say too much about the code (we just gave a chance to = neighbor group to run their code on our cluster, so I'm totally = unfriendly with this code). I will forward your question to them. But probably right now you can get more information (including sources) = here http://fmt.cs.utwente.nl/tools/ltsmin/ Anton= -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org