Messages in this thread | | | Date | Wed, 8 Oct 2014 19:05:13 +0200 | From | "Steinar H. Gunderson" <> | Subject | Re: bisected: futex regression >= 3.14 - was - Slowdown due to threads bouncing between HT cores |
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On Wed, Oct 08, 2014 at 01:04:01PM -0400, Linus Torvalds wrote: > So like Thomas, I would suspect a race condition in the futex use, and > then the exact futex implementation details are just exposing it > incidentally.
FWIW, Stockfish does not use futex directly; it uses pthreads (or Win32 threads if you are on that OS :-) ). That doesn't preclude a race condition somewhere, of course.
/* Steinar */ -- Homepage: http://www.sesse.net/
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