From owner-freebsd-current@FreeBSD.ORG Fri Aug 5 19:26:06 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 2DF9E16A420 for ; Fri, 5 Aug 2005 19:26:06 +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 5E91F43D48 for ; Fri, 5 Aug 2005 19:26:05 +0000 (GMT) (envelope-from jhb@FreeBSD.org) Received: from [10.50.40.201] (Not Verified[65.202.103.25]) by mv.twc.weather.com with NetIQ MailMarshal (v6, 0, 3, 8) id ; Fri, 05 Aug 2005 15:40:46 -0400 From: John Baldwin To: Eric Anderson Date: Fri, 5 Aug 2005 13:09:31 -0400 User-Agent: KMail/1.8 References: <42EFD785.5000409@centtech.com> <200508021720.45054.jhb@FreeBSD.org> <42F3713D.80509@centtech.com> In-Reply-To: <42F3713D.80509@centtech.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit Content-Disposition: inline Message-Id: <200508051309.31730.jhb@FreeBSD.org> Cc: freebsd-current@FreeBSD.org Subject: Re: Pending issues 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: Fri, 05 Aug 2005 19:26:06 -0000 On Friday 05 August 2005 10:01 am, Eric Anderson wrote: > John Baldwin wrote: > > On Tuesday 02 August 2005 04:57 pm, Eric Anderson wrote: > >>John Baldwin wrote: > >>>On Tuesday 02 August 2005 04:28 pm, Eric Anderson wrote: > >>>>Ok, here's a small list of issues pending that I can see on -current > >>>>(and I saw these on 6- branch too before 7.0). > >>>> > >>>>- Time ticks along correctly, but anything using an interval will be 2x > >>>>off. For instance - ping will only send a ping every 2 seconds instead > >>>>of every second. systat -vmstat 1 refreshes every 2 seconds, etc. > >>>>Disabling APIC 'fixes' it. > >>> > >>>Are you using the i8254 timecounter or some other timecounter? > >> > >>kern.timecounter.choice: TSC(800) ACPI-fast(1000) i8254(0) > >> dummy(-1000000) kern.timecounter.hardware: ACPI-fast > >> > >>Which is the default (I'm not forcing anything anywhere). I believe at > >>one time I tried i8254, but it made no difference. I can try it again > >>if you think it's a worthy experiment. > > > > I would try both i8254 and TSC and see if it makes a difference. > > Can I do this via sysctl, or do I need to rebuild my kernel? sysctl. Just write the name of the new one to kern.timecounter.hardware -- John Baldwin <>< http://www.FreeBSD.org/~jhb/ "Power Users Use the Power to Serve" = http://www.FreeBSD.org