[v4,0/3] x86/time: calibration rendezvous adjustments

Message

Jan Beulich April 1, 2021, 9:53 a.m. UTC

The first patch was, under a different title and with a different
approach, already part of the prior series of the same subject.
The other two patches are new, resulting from me spotting further
room for improvement (or so I hope).

1: latch to-be-written TSC value early in rendezvous loop
2: yield to hyperthreads after updating TSC during rendezvous
3: avoid reading the platform timer in rendezvous functions

Jan

Comments

Jan Beulich April 15, 2021, 9:54 a.m. UTC | #1

On 01.04.2021 11:53, Jan Beulich wrote:
> The first patch was, under a different title and with a different
> approach, already part of the prior series of the same subject.
> The other two patches are new, resulting from me spotting further
> room for improvement (or so I hope).
> 
> 1: latch to-be-written TSC value early in rendezvous loop
> 2: yield to hyperthreads after updating TSC during rendezvous
> 3: avoid reading the platform timer in rendezvous functions

Ping?

Jan