Time keeping Issues with the low-resolution TSC timecounter

Fabian Keil freebsd-listen at fabiankeil.de
Tue Jun 21 21:54:16 UTC 2011

Jung-uk Kim <jkim at FreeBSD.org> wrote:

> On Tuesday 21 June 2011 04:53 pm, Jung-uk Kim wrote:
> > Can you please try the attached patch?  It should disable
> > TSC/TSC-low timecounter for your CPU models, I think.
> Sorry, I attached a wrong patch.  Please ignore the previous one and 
> try this, instead.

Works for me:

fk at r500 ~ $dmesg | grep TSC
Calibrating TSC clock ... TSC clock: 1995045800 Hz
  TSC: P-state invariant, performance statistics
TSC timecounter disabled: C3 enabled.
Timecounter "TSC" frequency 1995045800 Hz quality -1000

Thanks a lot.

-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 196 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-current/attachments/20110621/5e4f377e/signature.pgp

More information about the freebsd-current mailing list