Timing code and collecting statistics
Factor handbook ยป Developer tools

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You can time the execution of a quotation in the listener:
time ( quot -- )


This word also collects statistics about method dispatch and garbage collection:
dispatch-stats. ( -- )

gc-events. ( -- )

gc-stats. ( -- )

gc-summary. ( -- )


A lower-level word puts timings on the stack, instead of printing:
benchmark ( quot -- runtime )


You can also read the system clock directly; see System interface.

See also
Sampling profiler, Word annotations, Calendar