From owner-freebsd-current@FreeBSD.ORG Thu Jun 23 22:12:44 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 CBF5916A41C for ; Thu, 23 Jun 2005 22:12:44 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: from mv.twc.weather.com (mv.twc.weather.com [65.212.71.225]) by mx1.FreeBSD.org (Postfix) with ESMTP id 8494243D49 for ; Thu, 23 Jun 2005 22:12:44 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: from [10.50.41.231] (Not Verified[65.202.103.25]) by mv.twc.weather.com with NetIQ MailMarshal (v6, 0, 3, 8) id ; Thu, 23 Jun 2005 18:26:10 -0400 From: John Baldwin To: Jens Schweikhardt Date: Thu, 23 Jun 2005 17:14:39 -0400 User-Agent: KMail/1.8 References: <20050516113420.GA786@schweikhardt.net> <200506221057.48595.jhb@FreeBSD.org> <20050623205854.GA763@schweikhardt.net> In-Reply-To: <20050623205854.GA763@schweikhardt.net> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200506231714.40891.jhb@FreeBSD.org> 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, 23 Jun 2005 22:12:44 -0000 On Thursday 23 June 2005 04:58 pm, Jens Schweikhardt wrote: > John et al, > > On Wed, Jun 22, 2005 at 10:57:47AM -0400, John Baldwin wrote: > # On Tuesday 21 June 2005 03:51 pm, Jens Schweikhardt wrote: > # > John, > # > > # > # > See > # > http://lists.freebsd.org/pipermail/freebsd-current/2005-May/050210.html > # > # > for the whole thread. > # > # > # > # I did glance over it, but I don't really have time to read every > e-mail # > on # current@ in detail. :( Do you have verbose dmesg's for > both cases? # > If so, # can you get the 'lapic: Divisor' lines from each > boot? # > > # > Sure, they are the same: > # > lapic: Divisor 2, Frequency 99829738 hz > # > > # > It appears Chris Gilbert has the same problem, see "Timekeeping gone > # > whack in 6-CURRENT" on this list. > # > # Ok, this is weird. Does this happen if you disable SMP via > # 'kern.smp.disabled=1' from the loader? > > No, with "set kern.smp.disabled=1" at the loader prompt, > timekeeping is ok and vmstat -i displays > > interrupt total rate > irq1: atkbd0 684 3 > irq13: npx0 1 0 > irq14: ata0 63 0 > irq15: ata1 109 0 > irq18: em0 27 0 > irq24: ahd0 23192 106 > irq25: ahc0 16 0 > lapic0: timer 430979 1986 > Total 455071 2097 > > Regards, > > Jens Ok. What timecounter does your UP kernel use, and does your UP kernel break if you change the timecounter to i8254? -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org