From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262483AbTFDKVz (ORCPT ); Wed, 4 Jun 2003 06:21:55 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262569AbTFDKVz (ORCPT ); Wed, 4 Jun 2003 06:21:55 -0400 Received: from lindsey.linux-systeme.com ([80.190.48.67]:6922 "EHLO mx00.linux-systeme.com") by vger.kernel.org with ESMTP id S262483AbTFDKVy (ORCPT ); Wed, 4 Jun 2003 06:21:54 -0400 From: Marc-Christian Petersen Organization: Working Overloaded Linux Kernel To: Andrea Arcangeli , Marcelo Tosatti Subject: Re: -rc7 Re: Linux 2.4.21-rc6 Date: Wed, 4 Jun 2003 12:35:07 +0200 User-Agent: KMail/1.5.2 Cc: Georg Nikodym , lkml References: <20030604102241.GM3412@x30.school.suse.de> In-Reply-To: <20030604102241.GM3412@x30.school.suse.de> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200306041235.07832.m.c.p@wolk-project.de> Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Wednesday 04 June 2003 12:22, Andrea Arcangeli wrote: Hi Andrea, > are you really sure that it is the right fix? > I mean, the batching has a basic problem (I was discussing it with Jens > two days ago and he said he's already addressed in 2.5, I wonder if that > could also have an influence on the fact 2.5 is so much better in > fariness) > the issue with batching in 2.4, is that it is blocking at 0 and waking > at batch_requests. But it's not blocking new get_request to eat requests > in the way back from 0 to batch_requests. I mean, there are two > directions, when we move from batch_requests to 0 get_requests should > return requests. in the way back from 0 to batch_requests the > get_request should block (and it doesn't in 2.4, that is the problem) do you see a chance to fix this up in 2.4? ciao, Marc