Beware Vmware time drift
list Vernon Everett
Hi all I tried running Hobbit on Ubuntu Linux in a a VM. The main problem I discovered is massive time drift when running any Linux-type OS in a VM. (This is a documented problem, but you have to search for the document) I was looking at drifts of over 20 minutes per hour. Keeping tabs on any events is almost impossible. There is a clinet available for some Linux flavours which will keep the local clock in sync with the host clock, but I couldn't find one for Ubuntu, and it was easier just to install Solaris 10 on a PC. For my purposes, I have to conclude that running Hobbit on Linux in an MS-Windows VM is not an option. Cheers Vernon -----Original Message----- From: Henrik Stoerner [mailto:user-ce4a2c883f75@xymon.invalid] Sent: Friday, 11 August 2006 5:09 AM To: user-ae9b8668bcde@xymon.invalid Subject: [hobbit] Pre-configured VMware hobbitserver available for download I've put together a VMware virtual machine configured with Debian Linux and a Hobbit server installation. If you have the VMware Player installed (free download from www.vmware.com), this lets you have a demonstration / test / play-around-with-stuff Hobbit server running without setting up a dedicated server for it. Since VMware Player is available for MS-Windows, it will even let you run a Hobbit server on a Windows-based system, although at the cost of having a virtual server running (i.e. you'll need a bit of RAM to support it). For those who want to play with it, it is available from the Hobbitmon "Files" area on sourceforge.net. Choose the "hobbitdemo" package: http://sourceforge.net/project/showfiles.php?group_id=128058&package_id= 200171 Just one warning: It's a 250 MB download. Regards, Henrik
list Allan Spencer
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Everett, Vernon wrote:
Hi all I tried running Hobbit on Ubuntu Linux in a a VM. The main problem I discovered is massive time drift when running any Linux-type OS in a VM. (This is a documented problem, but you have to search for the document) I was looking at drifts of over 20 minutes per hour. Keeping tabs on any events is almost impossible. There is a clinet available for some Linux flavours which will keep the local clock in sync with the host clock, but I couldn't find one for Ubuntu, and it was easier just to install Solaris 10 on a PC. For my purposes, I have to conclude that running Hobbit on Linux in an MS-Windows VM is not an option. Cheers Vernon -----Original Message----- From: Henrik Stoerner [mailto:user-ce4a2c883f75@xymon.invalid] Sent: Friday, 11 August 2006 5:09 AM To: user-ae9b8668bcde@xymon.invalid Subject: [hobbit] Pre-configured VMware hobbitserver available for download I've put together a VMware virtual machine configured with Debian Linux and a Hobbit server installation. If you have the VMware Player installed (free download from www.vmware.com), this lets you have a demonstration / test / play-around-with-stuff Hobbit server running without setting up a dedicated server for it. Since VMware Player is available for MS-Windows, it will even let you run a Hobbit server on a Windows-based system, although at the cost of having a virtual server running (i.e. you'll need a bit of RAM to support it). For those who want to play with it, it is available from the Hobbitmon "Files" area on sourceforge.net. Choose the "hobbitdemo" package: http://sourceforge.net/project/showfiles.php?group_id=128058&package_id= 200171 Just one warning: It's a 250 MB download. Regards, Henrik
I had this once before with a a 2.4 kernel host and 2.6 guest, or vice versa and the guest was drifting like there was no tommorow. Not sure if your problem is the same though http://www.vmware.com/community/thread.jspa?threadID=10158 From memory that ended up fixing our problem the clock=pit in the boot line and it hasnt missed a beat yet. Otherwise yeah NTP or the vmware time sync would not hold it Allan