The 64 bit xen host kernel are unstable (timer/scheduling issue?) So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.

Attached are smolt output.

I would be grateful for any input, this was meant to be a system where multiple services should run (several 64bit F8's) serving dns, web and mail, and replace at least two current lumps of hardware.. regards, George

On Wed, Jan 02, 2008 at 04:34:52PM +0100, George Refseth wrote: > It seems I got little attention with my original post. > The f8 64bit image hangs when starting X. Prior to that > the visual 'wait' circle keeps running around irregularily > at a lot than normal speed. > > I observed the same on multi core AMD running RHEL 4, which > was cured with RHEL 5. So no I am happy on that multi-core > workstation. > > But this new server I was trying to set up had definite problems > with the -21 xen kernel. It runs flawlessly with the f8 release > kernel (-23). > > For testing, where should I pull down a newer xen-kernel that would > run with a full 64 bit f8 install? I would be happy to be a guinea pig > (as long as I can revert) using this system if I could be pointed to > repositories and forum where I could contribute.. I'm afraid the 2.6.21 series of kernel-xen will be the newest we release for F-8 and earlier - its in bugfix only mode[1]. If there is an easy bugfix we can do for 2.6.21 to make it work that's a possiblity but we won't be doing .22 or .23 kernel-xen. I'd recommend filing a BZ ticket with as many details of the problem you are seeing as possible:

http://bugzilla.redhat.com/ Regards, Dan. [1] This is because in Fedora-9 we are radically changing the way we approach Xen kernels http://fedoraproject.org/wiki/Features/XenPvops

The 64 bit xen host kernel are unstable (timer/scheduling issue?) So I wonder if this is supported or not. Another Fedora 8 x86_64 installation on an Intel Core 2 Duo seems to run flawlessly, except it is running on a laptop, and not meant for server use.

George Refseth wrote: > The 64 bit xen host kernel are unstable (timer/scheduling issue?) > So I wonder if this is supported or not. Another Fedora 8 x86_64 > installation on > an Intel Core 2 Duo seems to run flawlessly, except it is running on a > laptop, > and not meant for server use. FWIW: I'm running F8 64-bit 2.6.21-2952, for both Dom0 and one DomU, on 6600/Core 2 Duo, without problems. The DomU is HVM; it was originally PV but I gave up on that for complex reasons. Various other (non-Fedora) HVM domU's also work without problems. Maybe it's just an issue with quad core.

Can you turn off two cores in the BIOS?