2014-08-28 08:41, Richardson, Bruce:
> As for rte_rdtsc_precise, I'm not sure about its origins, but I'm
> surprised to see that it does not correspond to the rdtscp instruction.
> Can anyone else comment on this one? I would assume it's designed
> to be used to get more accurate measurements of smaller blocks of
> code that we want to benchmark, since rdtsc works best when timing
> larger blocks (in terms of cycle counts, that is, not source lines :-) ).
The good thing with git history (and well written commit logs) is that
we can easily get such answer:
http://dpdk.org/browse/dpdk/commit/?id=3314648f83c3dc06d7d9a
Bruce, do you know how rdtscp is supported across Intel processors?
--
Thomas
