[Intel-gfx] [RFC 0/4] GPU/CPU timestamps correlation for relating OA samples with system events

[Robert Bragg]

On Thu, Dec 7, 2017 at 12:48 AM, Robert Bragg <robert at sixbynine.org> wrote:

>
> at least from what I wrote back then it looks like I was seeing a drift of
> a few milliseconds per second on SKL. I vaguely recall it being much worse
> given the frequency constants we had for Haswell.
>

Sorry I didn't actually re-read my own message properly before referencing
it :) Apparently the 2ms per second drift was for Haswell, so presumably
not quite so bad for SKL.

- Robert
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