Andi Kleen wrote:
> They should always just store the cpu too and educate the users that
> only (cpu, timestamp) pairs make sense to compare.
>
> That said at least my new sched_clock should not normally show
> large non differences between CPUs, so it can be usually ignored, but they
> can
> happen. I believe some of the already existing sched_clocks() (like the
> one used on Altix) have the same property.
>
> But on VMI/Xen as currently implemented the differences will be large.
Yes, it's pretty much unavoidable. It seems to me that these
non-scheduler uses of sched_clock should use something else. Or we
could add a new clock function for the scheduler to use, but
"sched_clock" seems like the best name for it.
J
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