bench_time: Measure Process CPU and real time that an expression used.

In bench: High Precision Timing of R Expressions

Measure Process CPU and real time that an expression used.

Description

Measure Process CPU and real time that an expression used.

Usage

bench_time(expr)

Arguments

expr	A expression to be timed.

Details

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.

Value

A bench_time object with two values.

• process - The process CPU usage of the expression evaluation.

• real - The wallclock time of the expression evaluation.

See Also

bench_memory() To measure memory allocations for a given expression.

Examples

# This will use ~.5 seconds of real time, but very little process time.
bench_time(Sys.sleep(.5))

bench documentation built on May 4, 2023, 5:13 p.m.