Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S261829AbTHTJTL (ORCPT ); Wed, 20 Aug 2003 05:19:11 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S261839AbTHTJTL (ORCPT ); Wed, 20 Aug 2003 05:19:11 -0400 Received: from main.gmane.org ([80.91.224.249]:40666 "EHLO main.gmane.org") by vger.kernel.org with ESMTP id S261829AbTHTJTJ (ORCPT ); Wed, 20 Aug 2003 05:19:09 -0400 X-Injected-Via-Gmane: http://gmane.org/ To: linux-kernel@vger.kernel.org From: mru@users.sourceforge.net (=?iso-8859-1?q?M=E5ns_Rullg=E5rd?=) Subject: Re: [PATCH] O17int Date: Wed, 20 Aug 2003 11:19:08 +0200 Message-ID: References: <200308200102.04155.kernel@kolivas.org> <200308201123.29206.kernel@kolivas.org> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Complaints-To: usenet@sea.gmane.org User-Agent: Gnus/5.1002 (Gnus v5.10.2) XEmacs/21.4 (Rational FORTRAN, linux) Cancel-Lock: sha1:Jm3XaCFKDuwOe7x+zIjOrWOCPWw= Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1245 Lines: 28 Con Kolivas writes: >> > This patch prevents any single task from being able to starve the >> > runqueue that it's on. This minimises the impact a poorly behaved >> > application or a malicious one has on the rest of the system. If an >> >> I have to disagree. Open a file of a few hundred lines in XEmacs and >> do a regexp search for "^[> ]*-*\n\\([> ]*.*\n\\)*[> ]*foo". The >> system will more or less freeze. It's a very nasty regexp, and it's >> an error to try to use it, but it still shouldn't freeze the system. > > Reasonably sure this is a variation on the starvation which O17 > won't address. Well, obviously. I tried O17 minus 016.2-O16.3, and I don't get the problems, even with X at nice 0. Does that tell you anything. > Please top/vmstat/profile this and I'll look into it. There is > potential for starvation without using up full timeslices and this > may be it. I'll do when I boot a kernel that has the problem. -- M?ns Rullg?rd mru@users.sf.net - 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/