Date: Wed, 21 Jan 2009 15:09:56 -0500 From: Maxim Khitrov <mkhitrov@gmail.com> To: Jeffrey Williams <jeff@sailorfej.net> Cc: freebsd-stable@freebsd.org Subject: Re: FreeBSD 7, runaway clock as guest OS on Microsoft Virtual Server Message-ID: <26ddd1750901211209k83250d7re8bb82dc2965ccd0@mail.gmail.com> In-Reply-To: <49777A7E.30904@sailorfej.net> References: <49777A7E.30904@sailorfej.net>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Jan 21, 2009 at 2:41 PM, Jeffrey Williams <jeff@sailorfej.net> wrote: > Hi Folks, > > I am trying to run FreeBSD 7 on Microsoft Virtual Server 2005 R2, Windows > Server 2003, on a Dell 2950. > > I am having a problem with the system clock running excessively fast, I > initially tried installing 7.1 release but received a nearly continuous > stream of the "calcru: runtime went backward errors", I tried rolling back > to 7.0, and it improved somewhat, but I still received regular "calcru" > errors, and it the system clock was running to fast for ntpd to keep up with > it, I set sysctl kern.timecounter.hardware to i8254 (it tries to default to > ACPI-safe), which helped more, ntpd is now able to keep pace with it, but > only barely, and I haven't seen any "calcru" errors yet. > > From the boot time dmesg, on the CPU line, the frequency reported with in > the parenthesizes varies on almost every reboot. > > Are there any other adjustments I can make to get this under control? Have you tried reducing the value of kern.hz (kern.hz="100" in /boot/loader.conf)? That fixes some clock-related problems on VMWare Server. - Max
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?26ddd1750901211209k83250d7re8bb82dc2965ccd0>