> > The original reason was that the Unix wall clock was more accurate > than its CPU clock. If that's changed we should probably (perhaps in a > platform-dependent way) change the default to the most accurate clock > available. > > Currently it seems clock_gettime() APIs have nanosecond resolution and OTOH gettimeofday() have microsecond. Other than that, clock_gettime() has a significant advantage: it has per-process timer available which will increase the accuracy of the timing information of the profiled application.
-- Sumer Cip
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