RE: Linux server time getting out of sync frequently.

not sure what to tell you...

have you tried :
One approach to a slow guest clock is to reduce the guest timer interrupt
rate.

In a one-CPU virtual machine, add the following kernel command line
parameters to the guest:
· nosmp noapic nolapic
Kernel command line parameters are specified in the /etc/lilo.conf or
/boot/grub/grub.conf file, depending on your choice of boot loader.

http://www.vmware.com/pdf/vmware_timekeeping.pdf





-----Original Message-----
From: redhat-list-bounces@xxxxxxxxxx
[mailto:redhat-list-bounces@xxxxxxxxxx]On Behalf Of John Horne
Sent: Tuesday, May 27, 2008 3:25 PM
To: General Red Hat Linux discussion list
Subject: RE: Linux server time getting out of sync frequently.


On Tue, 2008-05-27 at 15:15 -0700, bruce wrote:
john...

be sure you carefully read the pdf that was provided...

in the situation where i was involved... we had a number of guest linux OS
boxes running on top of vmware. the boxes would lose serious amounts of
time... the pdf, and i believe the steps mentioned solved our issues...

but make sure you carefully look over the pdf doc..

Yup, already done that. We've had our 'time' problems with vmware for
well over a year now (getting near 2 I should say). As mentioned
initially the only solution we haven't tried is rebuilding the kernel,
the only one we have found that does work is to use ntpdate via cron. I
passed the problem to our people maintaining the ESX servers, and they
contacted vmware about it (we have a support contract). They referred us
to the PDF doc, but as we pointed out the solutions in it still didn't
work. As might be expected, rebuilding the kernel was suggested :-)


John.

--
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John Horne, University of Plymouth, UK Tel: +44 (0)1752 587287
E-mail: John.Horne@xxxxxxxxxxxxxx Fax: +44 (0)1752 587001

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