time () returns the wall-clock time from the OS, with precision in seconds. · clock() seems to return the sum of user and system time. ... <看更多>

How to Time Your Code ( time, clock, times, clock_gettime ). 13K views · 4 years ago ...more. Jacob Sorber. 105K. Subscribe. 315. Share. Save. ... <看更多>

Process.clock_gettime is more efficient than Time.now because it returns a Numeric (a float or an integer) rather than a full Time object. ... <看更多>

My questions are: Do they depend on each other? Is gettimeofday implemented in terms of clock_gettime or vice-versa? Is getrusage implemented in ... ... <看更多>

A CPU with a constant, invariant TSC (time-stamp counter). ... the different problems in intra-machine vs. inter-machine time measurements. ... <看更多>