Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S265227AbTFRQis (ORCPT ); Wed, 18 Jun 2003 12:38:48 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S265234AbTFRQis (ORCPT ); Wed, 18 Jun 2003 12:38:48 -0400 Received: from holomorphy.com ([66.224.33.161]:21929 "EHLO holomorphy") by vger.kernel.org with ESMTP id S265227AbTFRQio (ORCPT ); Wed, 18 Jun 2003 12:38:44 -0400 Date: Wed, 18 Jun 2003 09:52:27 -0700 From: William Lee Irwin III To: Mike Galbraith Cc: Felipe Alfaro Solana , davidm@hpl.hp.com, LKML Subject: Re: O(1) scheduler starvation Message-ID: <20030618165227.GK26348@holomorphy.com> Mail-Followup-To: William Lee Irwin III , Mike Galbraith , Felipe Alfaro Solana , davidm@hpl.hp.com, LKML References: <1055922807.585.5.camel@teapot.felipe-alfaro.com> <5.2.0.9.2.20030618113653.0277d780@pop.gmx.net> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <5.2.0.9.2.20030618113653.0277d780@pop.gmx.net> Organization: The Domain of Holomorphy User-Agent: Mutt/1.5.4i Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1141 Lines: 22 On Wed, Jun 18, 2003 at 02:04:45PM +0200, Mike Galbraith wrote: > I've got thud licked (without the restricting sleep to time_slice), > test-starve works right as well, and interactivity is up. Tasks waking > each other in a loop is a bitch and a half though, and need to be beaten > about the head and shoulders. Going to a synchronous wakeup for pipes > (talking stock kernel now) cures irman process_load's ability to starve... > IFF you're running it from a vt. If you're in an xterm, it'll still climb > up from the bottom (only place where it can't starve anybody) and starve > via pass-the-baton wakeup DoS. That will/does take the joy out of using > xmms. If xmms didn't use multiple threads, it'd be much worse... right > now, you'll lose eye-candy [cpu hungry visualization stuff] before you lose > sound [at next song]. That's great. I'd love to see the patch. -- wli - 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/