Measure Process CPU and real time that an expression used.
A expression to be timed.
On some systems (such as macOS) the process clock has lower precision than the realtime clock, as a result there may be cases where the process time is larger than the real time for fast expressions.
bench_time object with two values.
process - The process CPU usage of the expression evaluation.
real - The wallclock time of the expression evaluation.
bench_memory() To measure memory allocations for a given expression.
# This will use ~.5 seconds of real time, but very little process time. bench_time(Sys.sleep(.5))
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