Thread (2 messages) 2 messages, 2 authors, 2014-08-28

Re: next releases

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From: Thomas Monjalon <hidden>
Date: 2014-08-28 09:06:07

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
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