Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760408AbZCWTIk (ORCPT ); Mon, 23 Mar 2009 15:08:40 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1760436AbZCWTI3 (ORCPT ); Mon, 23 Mar 2009 15:08:29 -0400 Received: from mail-fx0-f158.google.com ([209.85.220.158]:39806 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759618AbZCWTI2 (ORCPT ); Mon, 23 Mar 2009 15:08:28 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=googlemail.com; s=gamma; h=message-id:date:from:user-agent:x-accept-language:mime-version:to :cc:subject:references:in-reply-to:x-enigmail-version:content-type :content-transfer-encoding; b=TQ1QwHd61JWa/JNRtv3VqiYWmL2AvDWeTMlAyhTeqN+P/qJy8rehR4GgOVskaS3WTe fC+UX3/9q0ihb4fVW+HuTIgHm1cvS32LX4pi51MK8Fw0/koix7KmP0ZdckXbbnv4Mj/t EAl3lx/vbgzF7/vUDRylrhX1tboLsJ9hl5Kms= Message-ID: <49C7DE25.4030706@googlemail.com> Date: Mon, 23 Mar 2009 20:08:21 +0100 From: Michael Riepe User-Agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); en-US; rv:1.7.13) Gecko/20060417 X-Accept-Language: de-de, de, en-us, en MIME-Version: 1.0 To: Miklos Szeredi CC: mingo@elte.hu, linux-kernel@vger.kernel.org, oleg@redhat.com, peterz@infradead.org, roland@redhat.com, efault@gmx.de, rjw@sisk.pl, jdike@addtoit.com, user-mode-linux-devel@lists.sourceforge.net, torvalds@linux-foundation.org, akpm@linux-foundation.org, stable@kernel.org Subject: Re: [patch] fix ptrace slowness References: <20090323151954.GC21267@elte.hu> In-Reply-To: X-Enigmail-Version: 0.91.0.0 Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1007 Lines: 30 Hi! Miklos Szeredi wrote: > On Mon, 23 Mar 2009, Ingo Molnar wrote: > >>* Miklos Szeredi wrote: >> >> >>>This one incorporates comments from Oleg and Ingo. Please apply >>>to 2.6.29 and 2.6.2[78]-stable trees. >> >>The fix first needs to go upstream. There's an alternative patch >>below. Would you mind to give it a test? Chances are that it will >>make UML even faster than your fix. > > > Just the opposite. With my patch a UML image boots in 17 seconnds, > with your patch it boots in 33 seconds. Without either patch it boots > in about 5 minutes. My strace test case runs 60% faster with this patch (compared to Ingo's). -- Michael "Tired" Riepe X-Tired: Each morning I get up I die a little -- 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/