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

Re: [Xen-devel] RE: [PATCH] rendezvous-based local time calibration WOW!



On Mon, Aug 11, 2008 at 03:38:31PM +0100, Keir Fraser wrote:

> > It's only non-zero if we can indeed reschedule fast enough. If it's now
> > below the threshold, then we can consider it effectively fixed. Only
> > testing can really tell us that.
> 
> Depending on how critical this guarantee is, I wouldn't rely on Xen to
> perform perfectly. Probably you should keep your lock.

Or maybe make it optional, and let people turn it on when VCPUs are
pinned (VCPU migration doesn't make much sense to me for server
workloads AFAICS).

That lock is *painful*.

john

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxx
http://lists.xensource.com/xen-devel


 


Rackspace

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