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

Re: [Xen-devel] time does not move forward in HVM guests

Am Wed, 05 Jul 2017 02:14:23 -0600
schrieb "Jan Beulich" <JBeulich@xxxxxxxx>:

> Oh, even for HVM. Doesn't that go back to the missing vDSO
> support then again, which we had discussed just last week?

Yes. This is part of it. With clocksource=tsc there is a performance boost 
because vdso is used. With clocksource=hpet there is a performance drop to 20%, 
depending on the workload, due to the emulation of it (I guess).


Attachment: pgpBamxL6DMlD.pgp
Description: Digitale Signatur von OpenPGP

Xen-devel mailing list



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