On Fri, Feb 27, 2009 at 3:20 PM, Neu, Timothy <t...@sjm.com> wrote: > As I understand it, running NTP on a VM is a complete waste of > resources, as there is no real per-VM clock to keep in sync. (i.e., > you're updating ether) VMWare "fakes" a clock whenever a process tries > to access one. > > I know there are some kernel boot parameters that can be added to > improve time accuracy inside a VM. Not sure if I found them on Redhat's > site or VMWare's... That and VMWare tools time synchronization is the > best I've been able to come up with.
I'm running 40 hosts in Amazon EC2. They are Xen virtual machines and all of their clocks are synced via NTP. I have never had a problem with time shift nor CPU performance. -lee ------------------------------------------------------------------------------ Open Source Business Conference (OSBC), March 24-25, 2009, San Francisco, CA -OSBC tackles the biggest issue in open source: Open Sourcing the Enterprise -Strategies to boost innovation and cut costs with open source participation -Receive a $600 discount off the registration fee with the source code: SFAD http://p.sf.net/sfu/XcvMzF8H _______________________________________________ Nagios-users mailing list Nagios-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/nagios-users ::: Please include Nagios version, plugin version (-v) and OS when reporting any issue. ::: Messages without supporting info will risk being sent to /dev/null