From owner-freebsd-current@FreeBSD.ORG Sat Nov 29 08:36:00 2003 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.FreeBSD.org (mx1.freebsd.org [216.136.204.125]) by hub.freebsd.org (Postfix) with ESMTP id AB7BE16A4CE; Sat, 29 Nov 2003 08:36:00 -0800 (PST) Received: from mail.sandvine.com (sandvine.com [199.243.201.138]) by mx1.FreeBSD.org (Postfix) with ESMTP id 43F0243FDD; Sat, 29 Nov 2003 08:35:56 -0800 (PST) (envelope-from don@sandvine.com) Received: by mail.sandvine.com with Internet Mail Service (5.5.2657.72) id ; Sat, 29 Nov 2003 11:35:55 -0500 Message-ID: From: Don Bowman To: 'Kris Kennaway' , Michael Nottebrock Date: Sat, 29 Nov 2003 11:35:54 -0500 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2657.72) Content-Type: text/plain; charset="iso-8859-1" cc: freebsd-current@FreeBSD.org cc: freebsd-stable@FreeBSD.org Subject: RE: Time jumping on both 4.x and 5.x ... X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.1 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 29 Nov 2003 16:36:00 -0000 From: Kris Kennaway [mailto:kris@obsecurity.org] > > On Sat, Nov 29, 2003 at 11:32:28AM +0100, Michael Nottebrock wrote: > Content-Description: signed data > > On Saturday 29 November 2003 09:19, Kris Kennaway wrote: > > > > > > Are all affected machines multi-processor? > > > > None. Both are i386 UP (although the 4.9-RELEASE box is > running an SMP-enabled > > kernel). > > I didn't think 4.x SMP kernels could run on a UP machine. They can if the machine has an APIC. ie most P3 and newer boards will run a MP kernel even if only one processor is installed. For me, the bug reproduces on 4.7, and if I set kern.timecounter.method=1, the problem goes away. I've reproduced on both TSC and i8254. --don