User manual

VAX MP SIMH console extensions

PERF

VAX MP adds console command to monitor VAX MP performance counters. This information is

valuable for tuning VAX MP and is intended mostly for VAX MP developers. Format of the

command and its options is:

PERF [ON / OFF / SHOW / RESET] [counter-id]

ON enables specified counter or counters.

OFF disables it.

RESET resets accumulated counter data.

SHOW displays accumulated values.

PERF with no arguments is equivalent to PERF SHOW.

If counter-id is omitted, operation is performed on all counters defined in the simulator.

Currently performance counters are implemented for VAX MP internal locks.