[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-users] Xen support for emulating TSC register!!

On Fri, 2 Nov 2007 16:19:29 -0400
"techy geek" <techygeek72@xxxxxxxxx> wrote:

> Hi Everyone,
> I need to do  some profiling on Xen Virtual machine.  I have a query here:
> * Like VMWare, Can Xen Guest emulates the TSC  CPU register??? if Yes, then
> how is the performance of this TSC register as I read that VmWare  very
> poorly emulates the TSC register.

I suspect "poor" describes Xen as well. I keep seeing messages on the
console of various HVM's I have which say something about unstable TSC
values off by some 6 or 7 digit number of cycles.

Xen-users mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.