Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756500AbZCURDV (ORCPT ); Sat, 21 Mar 2009 13:03:21 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754568AbZCURDE (ORCPT ); Sat, 21 Mar 2009 13:03:04 -0400 Received: from mail-fx0-f158.google.com ([209.85.220.158]:48542 "EHLO mail-fx0-f158.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754282AbZCURDA (ORCPT ); Sat, 21 Mar 2009 13:03:00 -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=kMmaLa3/ZagpWoyaAQSGMDvRhr/sp15Yo7oJ/D6Bdq3tpt2CPgDsZ+HDk8actDh0tT V8idU6vDtGCIFmiP9kd2CdQBY418LX0nPm1EkyfNiMhkteHRqBizSdjt3b4CfBJJKUxM lJz47zx/2LPrfvkEyUYQfok0cin/t0lCutqfU= Message-ID: <49C51DBE.4000403@googlemail.com> Date: Sat, 21 Mar 2009 18:02:54 +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: Ingo Molnar CC: "Rafael J. Wysocki" , Linux Kernel Mailing List , Kernel Testers List , Miklos Szeredi Subject: Re: ptrace performance References: <9nR7rAsBwYG.A.iEG.fOCvJB@chimera> <49C4FD41.4030504@googlemail.com> <20090321152217.GB1073@elte.hu> In-Reply-To: <20090321152217.GB1073@elte.hu> 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: 625 Lines: 18 Ingo Molnar wrote: > that's almost certainly due to the wait_task_inactive() change. Does > the patch below improve things? That makes it *much* better - dd reports more than 3 GB/s on the Core Duo. I'll have to check the other systems later; they're busy at the moment. -- 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/