15/01/2018 16:09, Konstantin Ananyev: > On x86 it is possible to use lock-prefixed instructions to get > the similar effect as mfence. > As pointed by Java guys, on most modern HW that gives a better > performance than using mfence: > https://shipilev.net/blog/2014/on-the-fence-with-dependencies/ > That patch adopts that technique for rte_smp_mb() implementation. > On BDW 2.2 mb_autotest on single lcore reports 2X cycle reduction, > i.e. from ~110 to ~55 cycles per operation. > > Signed-off-by: Konstantin Ananyev <konstantin.anan...@intel.com> > Acked-by: Bruce Richardson <bruce.richard...@intel.com>
Applied, thanks
