====== Fedora Core 5 VM clock sync problem ======

[[http://groups.google.com/group/linux.kernel/msg/536a9b6b70e81456?hl=en&lr=|clock info]]

The 2.6 kernel of Fedora Core 5 and VMWare 4.5.2 also fought over the system clock. Specifically, the clock in the Linux guest ran 2-5x slower than real time. This affects everything time-based, including the keyboard repeat delay, which is very annoying. The problem is well documented on the VMWare forums, and there are a couple solutions. First, try the clock=pit kernel option. (Append it to the kernel line in /etc/grub.conf). If that doesn't work, download the source for your kernel, change the HZ constant in include/asm-i386/param.h from 1000 to 100, and rebuild. clock=pit didn't work for me, but changing HZ to 100 did. (([[http://snarfed.org/space/fedora%20core%203%20on%20vmware]]))

<note tip>
Using the 100Hz frequency, as opposed to the 1000Hz default of Fedora, fixed the problem.
</note>


===== Kernel Recompiling =====

I have a short guide to help recompiling a "Fedora" kernel here:

[[linux:server:fedora kernel]]

===== reference links =====
http://www.linuxquestions.org/questions/showthread.php?p=2131626

http://www.vmware.com/community/message.jspa?messageID=99933

http://snarfed.org/space/fedora%20core%203%20on%20vmware

http://www.cisl.ucar.edu/nets/intro/staff/siemsen/linux/#time


{{tag>:linux :linux:server :linux:fedora}}