From owner-freebsd-current@FreeBSD.ORG Thu May 26 17:30:16 2005 Return-Path: X-Original-To: freebsd-current@freebsd.org 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 CC1E816A41C for ; Thu, 26 May 2005 17:30:16 +0000 (GMT) (envelope-from dwhite@gumbysoft.com) Received: from carver.gumbysoft.com (carver.gumbysoft.com [66.220.23.50]) by mx1.FreeBSD.org (Postfix) with ESMTP id A339A43D4C for ; Thu, 26 May 2005 17:30:16 +0000 (GMT) (envelope-from dwhite@gumbysoft.com) Received: by carver.gumbysoft.com (Postfix, from userid 1000) id 6C9D272DD9; Thu, 26 May 2005 10:30:16 -0700 (PDT) Received: from localhost (localhost [127.0.0.1]) by carver.gumbysoft.com (Postfix) with ESMTP id 6A5EE72DD4; Thu, 26 May 2005 10:30:16 -0700 (PDT) Date: Thu, 26 May 2005 10:30:16 -0700 (PDT) From: Doug White To: Jens Schweikhardt In-Reply-To: <20050523210141.GA779@schweikhardt.net> Message-ID: <20050526102606.T69716@carver.gumbysoft.com> References: <20050516113420.GA786@schweikhardt.net> <20050518150346.S87264@carver.gumbysoft.com> <20050519190129.GA1048@schweikhardt.net> <20050520122944.B8229@carver.gumbysoft.com> <20050521092857.GA847@schweikhardt.net> <20050522112845.S27009@carver.gumbysoft.com> <20050523175609.GA779@schweikhardt.net> <20050523210141.GA779@schweikhardt.net> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Cc: freebsd-current@freebsd.org Subject: Re: Timekeeping hosed by factor 3, high lapic[01] interrupt rates X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 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: Thu, 26 May 2005 17:30:17 -0000 On Mon, 23 May 2005, Jens Schweikhardt wrote: > ... > # # 3. Backout rev 1.218 of src/sys/i386/isa/clock.c so the irq0 interrupt > # # handler is reactivated and the RTC fiddled. > # > # Will do so next. I've nailed the change between March 6 and March 30. > # 1.218 is from 2005/03/24 21:34:16, which would fit. > > We have a winner. Backing out 1.218 from a 2005/03/24 system does the trick, > as well as a CURRENT without 1.218 (but 1.219-220 in there) bring back irq0 > and time dilation is gone. All clocks work correctly. Hm ... not sure what part of that commit is the bad part. You might try changing if (!using_lapic_timer) { to if(1) { in the most recent rev of clock.c to register irq0 again. If that doesn't chang ethe dialation then something else in the system must be depending on the RTC periodic interrupt. > Now the question is: what is so special in my system so that I appear > to be the only one to notice the problem? Good question. What CPUs do you have in that machine again? Copy out the 'CPU' and related lines from dmesg. -- Doug White | FreeBSD: The Power to Serve dwhite@gumbysoft.com | www.FreeBSD.org