Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752663AbZLWGNe (ORCPT ); Wed, 23 Dec 2009 01:13:34 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1751817AbZLWGNd (ORCPT ); Wed, 23 Dec 2009 01:13:33 -0500 Received: from mail-yw0-f182.google.com ([209.85.211.182]:56771 "EHLO mail-yw0-f182.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751351AbZLWGNc (ORCPT ); Wed, 23 Dec 2009 01:13:32 -0500 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=sender:message-id:date:from:user-agent:mime-version:to:cc:subject :references:in-reply-to:content-type:content-transfer-encoding; b=diKVrvkZVqRw0Jqa8af1+ki3Y4FtFkQclHxNbf7glpkxijIdCwqXkTzC/bXfNKxIxx q6q2UXH/dYRjQzvH3r1roE1ZovYaaYYT7wInPplxBxb30DTVcciP/4/DveWWUJAIT2vv YO2zm1NWBA2tAnSD0tG43HK+j4TiLrqAs8S5E= Message-ID: <4B31B508.5040903@garzik.org> Date: Wed, 23 Dec 2009 01:13:28 -0500 From: Jeff Garzik User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.5) Gecko/20091209 Fedora/3.0-3.fc11 Thunderbird/3.0 MIME-Version: 1.0 To: Ingo Molnar CC: Linus Torvalds , Tejun Heo , Peter Zijlstra , awalls@radix.net, linux-kernel@vger.kernel.org, akpm@linux-foundation.org, jens.axboe@oracle.com, rusty@rustcorp.com.au, cl@linux-foundation.org, dhowells@redhat.com, arjan@linux.intel.com, avi@redhat.com, johannes@sipsolutions.net, andi@firstfloor.org Subject: Re: workqueue thing References: <1261141088-2014-1-git-send-email-tj@kernel.org> <1261143924.20899.169.camel@laptop> <4B2EE5A5.2030208@kernel.org> <1261387377.4314.37.camel@laptop> <4B2F7879.2080901@kernel.org> <1261405604.4314.154.camel@laptop> <4B3009DC.7020407@kernel.org> <1261480001.4937.21.camel@laptop> <4B319A20.9010305@kernel.org> <20091223060229.GA14805@elte.hu> In-Reply-To: <20091223060229.GA14805@elte.hu> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 769 Lines: 19 On 12/23/2009 01:02 AM, Ingo Molnar wrote: > One key thing i havent seen in this discussion are actual measurements. I > think a lot could be decided by simply testing this patch-set, by looking at > the hard numbers: how much faster (or slower) did a particular key workload > get before/after these patches. We are dealing with situations where drivers are using workqueues to provide a sleep-able context, and trying to solve problems related to that. "faster or slower?" is not very relevant for such cases. Jeff -- 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/