From mboxrd@z Thu Jan 1 00:00:00 1970 From: jamal Subject: Re: 2.6.24 BUG: soft lockup - CPU#X Date: Fri, 28 Mar 2008 10:07:29 -0400 Message-ID: <1206713249.4429.69.camel@localhost> References: <47EC399E.90804@sun.com> <20080327.173418.18777696.davem@davemloft.net> <20080328012234.GA20465@gondor.apana.org.au> <20080327.183844.74572930.davem@davemloft.net> <20080328102931.GA23039@gondor.apana.org.au> <20080328105629.GG1011@elte.hu> <20080328110621.GA23342@gondor.apana.org.au> <20080328112928.GA23547@gondor.apana.org.au> <1206706759.4429.58.camel@localhost> <20080328132643.GA24180@gondor.apana.org.au> Reply-To: hadi@cyberus.ca Mime-Version: 1.0 Content-Type: text/plain Content-Transfer-Encoding: 7bit Cc: "David S. Miller" , Ingo Molnar , Matheos.Worku@Sun.COM, jesse.brandeburg@intel.com, jarkao2@gmail.com, netdev@vger.kernel.org To: Herbert Xu Return-path: Received: from el-out-1112.google.com ([209.85.162.182]:10890 "EHLO el-out-1112.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755283AbYC1OIS (ORCPT ); Fri, 28 Mar 2008 10:08:18 -0400 Received: by el-out-1112.google.com with SMTP id v27so92833ele.17 for ; Fri, 28 Mar 2008 07:08:18 -0700 (PDT) In-Reply-To: <20080328132643.GA24180@gondor.apana.org.au> Sender: netdev-owner@vger.kernel.org List-ID: On Fri, 2008-28-03 at 21:26 +0800, Herbert Xu wrote: > I agree that using jiffies is a pretty coarse approximation of > proper scheduling. However, in the absence of a better solution > we have to live with it. I know it works well enough and has for years; sure you could do better but i wasnt questioning the solution - more than anything on my part that was curiosity. > Perhaps running these out of process context is the correct > approach. I saw something from Max Krasnyansky along those lines but havent quiet followed it up. Should be interesting to see the effect over a large types of workloads. cheers, jamal