From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S267382AbUHPDLR (ORCPT ); Sun, 15 Aug 2004 23:11:17 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S267385AbUHPDLR (ORCPT ); Sun, 15 Aug 2004 23:11:17 -0400 Received: from viper.oldcity.dca.net ([216.158.38.4]:60901 "HELO viper.oldcity.dca.net") by vger.kernel.org with SMTP id S267382AbUHPDKy (ORCPT ); Sun, 15 Aug 2004 23:10:54 -0400 Subject: Re: [patch] voluntary-preempt-2.6.8.1-P0 From: Lee Revell To: Ingo Molnar Cc: Florian Schmidt , linux-kernel , Felipe Alfaro Solana In-Reply-To: <20040816025846.GA10240@elte.hu> References: <1092382825.3450.19.camel@mindpipe> <20040813104817.GI8135@elte.hu> <1092432929.3450.78.camel@mindpipe> <20040814072009.GA6535@elte.hu> <20040815115649.GA26259@elte.hu> <20040816022554.16c3c84a@mango.fruits.de> <1092622121.867.109.camel@krustophenia.net> <20040816023655.GA8746@elte.hu> <1092624221.867.118.camel@krustophenia.net> <20040816025051.GA9481@elte.hu> <20040816025846.GA10240@elte.hu> Content-Type: text/plain Message-Id: <1092625901.867.130.camel@krustophenia.net> Mime-Version: 1.0 X-Mailer: Ximian Evolution 1.4.6 Date: Sun, 15 Aug 2004 23:11:41 -0400 Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org On Sun, 2004-08-15 at 22:58, Ingo Molnar wrote: > * Ingo Molnar wrote: > i've attached mlock-test2.cc that should test this theory. The code > breaks up the mlock-ed region into 8 equal pieces and does mlock() on > them separately. It's basically a lock-break done in user-space. Does > this change the nature of xruns? > This does change the xruns. I have to `mlock-test2 8000' to produce any xrun at all, and that only produces a 2-300 usec xrun. With mlockall-test the threshold to produce an xrun was ~1500. Lee