To generate a time and allocation profile, give one of the
following RTS options to the compiled program when you run it (RTS
options should be enclosed between
-p option produces a standard
time profile report. It is written
into the file
-P option produces a more
detailed report containing the actual time and allocation
data as well. (Not used much.)
-pa option produces the most detailed
report containing all cost centres in addition to the actual time
and allocation data.
Sets the interval that the RTS clock ticks at, which is also the sampling interval of the time and allocation profile. The default is 0.02 second.
This option makes use of the extra information maintained by the cost-centre-stack profiler to provide useful information about the location of runtime errors. See Section 4.1.7, “RTS options for hackers, debuggers, and over-interested souls”.