Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758751AbWK1SrX (ORCPT ); Tue, 28 Nov 2006 13:47:23 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S936009AbWK1SrX (ORCPT ); Tue, 28 Nov 2006 13:47:23 -0500 Received: from outbound0.mx.meer.net ([209.157.153.23]:28684 "EHLO outbound0.sv.meer.net") by vger.kernel.org with ESMTP id S1758751AbWK1SrW (ORCPT ); Tue, 28 Nov 2006 13:47:22 -0500 Subject: Re: 2.6.19-rc6-mm1 -- sched-improve-migration-accuracy.patch slows boot From: Don Mullis To: Ingo Molnar Cc: Mike Galbraith , Andrew Morton , linux-kernel@vger.kernel.org In-Reply-To: <20061127101600.GB5812@elte.hu> References: <20061123021703.8550e37e.akpm@osdl.org> <1164484124.2894.50.camel@localhost.localdomain> <1164522263.5808.12.camel@Homer.simpson.net> <1164591509.2894.76.camel@localhost.localdomain> <20061127101600.GB5812@elte.hu> Content-Type: text/plain Date: Tue, 28 Nov 2006 10:47:02 -0800 Message-Id: <1164739622.2894.116.camel@localhost.localdomain> Mime-Version: 1.0 X-Mailer: Evolution 2.6.3 (2.6.3-1.fc5.5) Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 873 Lines: 26 On Mon, 2006-11-27 at 11:16 +0100, Ingo Molnar wrote: > could you run this utility: > > http://people.redhat.com/mingo/time-warp-test/time-warp-test.c > > on your box for a while (10 minutes or so) - what does it print? > > Ingo 1 CPUs, running 1 parallel test-tasks. checking for time-warps via: - read time stamp counter (RDTSC) instruction (cycle resolution) - gettimeofday (TOD) syscall (usec resolution) - clock_gettime(CLOCK_MONOTONIC) syscall (nsec resolution) new TOD-warp maximum: -442709 usecs, 00042352e214e2f8 -> 00042352e20e21a3 | 0.69 us, TSC-warps:0 | 6.89 us, TOD-warps:1 | 6.89 us, CLOCK-warps:0 | - 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/