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Use clock_gettime() instead of gettimeofday() on FreeBSD. #843

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Use clock_gettime() instead of gettimeofday() on FreeBSD. #843

wants to merge 1 commit into from

Commits on Dec 21, 2012

  1. Use clock_gettime() instead of gettimeofday() on FreeBSD. 

    On FreeBSD calling gettimeofday() causes all the cores on a multicore
system to be synchronized. On a heavily loaded system with a
significantly CPU bound application this can cause a 40% overall
system degradation.

A better option is to use clock_gettime() and pass in the
CLOCK_REALTIME_FAST clock as the clock to use. This achieves the
same behavior as gettimeofday() on Linux.
    @ldm5180
    ldm5180 committed Dec 21, 2012
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