Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932243AbWAATGv (ORCPT ); Sun, 1 Jan 2006 14:06:51 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S932244AbWAATGv (ORCPT ); Sun, 1 Jan 2006 14:06:51 -0500 Received: from mustang.oldcity.dca.net ([216.158.38.3]:53182 "HELO mustang.oldcity.dca.net") by vger.kernel.org with SMTP id S932243AbWAATGu (ORCPT ); Sun, 1 Jan 2006 14:06:50 -0500 Subject: Re: [patch] latency tracer, 2.6.15-rc7 From: Lee Revell To: Linus Torvalds Cc: paulmck@us.ibm.com, Ingo Molnar , Dave Jones , Hugh Dickins , linux-kernel , Eric Dumazet , Dipankar Sarma , vatsa@in.ibm.com In-Reply-To: <1136142127.13079.51.camel@mindpipe> References: <20051229202848.GC29546@elte.hu> <1135908980.4568.10.camel@mindpipe> <20051230080032.GA26152@elte.hu> <1135990270.31111.46.camel@mindpipe> <1135991732.31111.57.camel@mindpipe> <1136001615.3050.5.camel@mindpipe> <20051231042902.GA3428@us.ibm.com> <1136004855.3050.8.camel@mindpipe> <20051231201426.GD5124@us.ibm.com> <1136094372.7005.19.camel@mindpipe> <1136142127.13079.51.camel@mindpipe> Content-Type: text/plain Date: Sun, 01 Jan 2006 14:06:47 -0500 Message-Id: <1136142408.13079.53.camel@mindpipe> Mime-Version: 1.0 X-Mailer: Evolution 2.5.3 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 901 Lines: 23 On Sun, 2006-01-01 at 14:02 -0500, Lee Revell wrote: > On Sun, 2006-01-01 at 10:56 -0800, Linus Torvalds wrote: > > The thing is, "maxbatch" doesn't actually _work_ because what happens > > is that the tasklet will continually re-schedule itself, and the > > caller will keep calling it. So maxbatch is actually broken. > > > > However, what happens is that after kernel/softirq.c has called the > > tasklet ten times, and it is still pending, it will do the softirq in > > a thread (see the "max_restart" logic). > > Ah OK thanks for the explanation. I'll try Paul's patch (yours did not > seem to help). > s/try Paul's patch/set maxbatch to 10/ - 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/