Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262521AbUCWMaf (ORCPT ); Tue, 23 Mar 2004 07:30:35 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262528AbUCWMaf (ORCPT ); Tue, 23 Mar 2004 07:30:35 -0500 Received: from ppp-217-133-42-200.cust-adsl.tiscali.it ([217.133.42.200]:15555 "EHLO dualathlon.random") by vger.kernel.org with ESMTP id S262521AbUCWMaN (ORCPT ); Tue, 23 Mar 2004 07:30:13 -0500 Date: Tue, 23 Mar 2004 13:31:05 +0100 From: Andrea Arcangeli To: Arjan van de Ven Cc: dipankar@in.ibm.com, tiwai@suse.de, Robert Love , Andrew Morton , linux-kernel@vger.kernel.org Subject: Re: [PATCH] RCU for low latency (experimental) Message-ID: <20040323123105.GI22639@dualathlon.random> References: <20040323101755.GC3676@in.ibm.com> <1080038105.5296.8.camel@laptop.fenrus.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1080038105.5296.8.camel@laptop.fenrus.com> User-Agent: Mutt/1.4.1i X-GPG-Key: 1024D/68B9CB43 13D9 8355 295F 4823 7C49 C012 DFA1 686E 68B9 CB43 X-PGP-Key: 1024R/CB4660B9 CC A0 71 81 F4 A0 63 AC C0 4B 81 1D 8C 15 C8 E5 Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 639 Lines: 15 On Tue, Mar 23, 2004 at 11:35:06AM +0100, Arjan van de Ven wrote: > > > Reduce bh processing time of rcu callbacks by using tunable per-cpu > > krcud daemeons. > > why not just use work queues ? I don't know if work queues are scheduler friendly, but definitely the rearming tasklets are. Running a dozen callbacks per pass and queueing any remining work to a rearming tasklet should fix it. - 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/