From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752842Ab2HMQgH (ORCPT ); Mon, 13 Aug 2012 12:36:07 -0400 Received: from mail-yw0-f46.google.com ([209.85.213.46]:58653 "EHLO mail-yw0-f46.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752690Ab2HMQgG (ORCPT ); Mon, 13 Aug 2012 12:36:06 -0400 Date: Mon, 13 Aug 2012 09:36:01 -0700 From: Tejun Heo To: Joonsoo Kim Cc: linux-kernel@vger.kernel.org Subject: Re: [PATCH 5/5] workqueue: use system_highpri_wq for unbind_work Message-ID: <20120813163601.GC9180@google.com> References: <1344874672-6257-1-git-send-email-js1304@gmail.com> <1344874672-6257-5-git-send-email-js1304@gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1344874672-6257-5-git-send-email-js1304@gmail.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Aug 14, 2012 at 01:17:52AM +0900, Joonsoo Kim wrote: > To speed cpu down processing up, use system_highpri_wq. > As scheduling priority of workers on it is higher than system_wq and > it is not contended by other normal works on this cpu, work on it > is processed faster than system_wq. Is this from an actual workload? ie. do you have a test case where this matters? Thanks. -- tejun