Profiling Prolog Programs¶

YAP includes two profilers.

• The Count Profiler

• Counting Calls

• Tick Profiler

The count profiler keeps information on the number of times a predicate was called. This information can be used to detect what are the most commonly called predicates in the program. The count profiler can be compiled by setting YAP's flag profiling to on. The time-profiler is a gprof profiler, and counts how many ticks are being spent on specific predicates, or on other system functions such as internal data-base accesses or garbage collects.

The YAP profiling sub-system is currently under development. Functionality for this sub-system will increase with newer implementation.

• call_count/4
• call_count_reset/0
• call_count_data/5