On Sat, 23 Mar 2019, Bruce Evans wrote:
I now have an almost perfect skew measuring program. It has a variance of
about 2 cycles.
Output on i4790k (only for CPU 0 vs CPU [1-7], since nothing different
happens for the general CPU i vs CPU j comparison):
XX(min/avg/max/sd)
XX |
On Thu, 21 Mar 2019, Mark Johnston wrote:
On Thu, Mar 21, 2019 at 10:44:49PM +1100, Bruce Evans wrote:
On Wed, 20 Mar 2019, Mark Johnston wrote:
On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
Author: markj
Date: Thu Mar 21 02:52:22 2019
New Revision: 345359
URL:
On Thu, Mar 21, 2019 at 1:32 PM Mark Johnston wrote:
> On Thu, Mar 21, 2019 at 10:44:49PM +1100, Bruce Evans wrote:
> > On Wed, 20 Mar 2019, Mark Johnston wrote:
> >
> > > On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
> > >>> Author: markj
> > >>> Date: Thu Mar 21 02:52:22
On Thu, Mar 21, 2019 at 10:44:49PM +1100, Bruce Evans wrote:
> On Wed, 20 Mar 2019, Mark Johnston wrote:
>
> > On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
> >>> Author: markj
> >>> Date: Thu Mar 21 02:52:22 2019
> >>> New Revision: 345359
> >>> URL:
On 3/20/19 7:52 PM, Mark Johnston wrote:
> Author: markj
> Date: Thu Mar 21 02:52:22 2019
> New Revision: 345359
> URL: https://svnweb.freebsd.org/changeset/base/345359
>
> Log:
> Don't attempt to measure TSC skew when running as a VM guest.
>
> It simply doesn't work in general since
On Thu, 21 Mar 2019, Bruce Evans wrote:
On Wed, 20 Mar 2019, Mark Johnston wrote:
On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
Author: markj
Date: Thu Mar 21 02:52:22 2019
New Revision: 345359
URL: https://svnweb.freebsd.org/changeset/base/345359
Log:
Don't attempt to
On Wed, 20 Mar 2019, Mark Johnston wrote:
On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
Author: markj
Date: Thu Mar 21 02:52:22 2019
New Revision: 345359
URL: https://svnweb.freebsd.org/changeset/base/345359
Log:
Don't attempt to measure TSC skew when running as a VM
> Author: markj
> Date: Thu Mar 21 02:52:22 2019
> New Revision: 345359
> URL: https://svnweb.freebsd.org/changeset/base/345359
>
> Log:
> Don't attempt to measure TSC skew when running as a VM guest.
>
> It simply doesn't work in general since VCPUs may migrate between
> physical cores.
Author: markj
Date: Thu Mar 21 02:52:22 2019
New Revision: 345359
URL: https://svnweb.freebsd.org/changeset/base/345359
Log:
Don't attempt to measure TSC skew when running as a VM guest.
It simply doesn't work in general since VCPUs may migrate between
physical cores. The approach used
On Wed, Mar 20, 2019 at 08:20:18PM -0700, Rodney W. Grimes wrote:
> > Author: markj
> > Date: Thu Mar 21 02:52:22 2019
> > New Revision: 345359
> > URL: https://svnweb.freebsd.org/changeset/base/345359
> >
> > Log:
> > Don't attempt to measure TSC skew when running as a VM guest.
> >
> >
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