From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S262035AbUDTANU (ORCPT ); Mon, 19 Apr 2004 20:13:20 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S262114AbUDTANU (ORCPT ); Mon, 19 Apr 2004 20:13:20 -0400 Received: from smtp015.mail.yahoo.com ([216.136.173.59]:33931 "HELO smtp015.mail.yahoo.com") by vger.kernel.org with SMTP id S262035AbUDTANS (ORCPT ); Mon, 19 Apr 2004 20:13:18 -0400 Message-ID: <40846B1B.2010103@yahoo.com.au> Date: Tue, 20 Apr 2004 10:13:15 +1000 From: Nick Piggin User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.6) Gecko/20040401 Debian/1.6-4 X-Accept-Language: en MIME-Version: 1.0 To: Antti Lankila CC: linux-kernel@vger.kernel.org Subject: Re: elevator=as, or actually gpm doesn't get time from scheduler??? References: In-Reply-To: Content-Type: text/plain; charset=us-ascii; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Antti Lankila wrote: > My X reads gpmdata, so perhaps that's the problem? I now undercut gpm in > order to examine the situation, and my system behaves _perfectly_ as far as > I can see. The mouse issues are all gone. (gpm is still running in the > background, X just reads psaux directly. As I have understood, this is > possible in 2.6 while in 2.4 it caused a problem for multiple readers.) > > I progress from now by removing gpm on all my systems. There's still the > issue what gpm (or maybe kernel's scheduler) is doing wrong, I suppose. > Nevertheless, gpm is virtually useless for me and has so far caused far more > grief than its utility has ever been worth. > > I'm sorry for having wasted your time with this. > Not at all, thank you for reporting the problem. It seems the CPU scheduler is a bit fragile when there are a number of interrelated processes. Note: I don't know whether my scheduler fixes this case or not, it might just be a difficult problem.