This is equivalent to the value \[lq]100\[rq].
A value of zero for \f[I]FREQ\f[] effectively disables sampling.
.IP \[bu] 2
+\f[I]heapshot-on-shutdown\f[]: collect heap shot data when the runtime
+shuts down.
+.IP \[bu] 2
\f[I]maxframes=NUM\f[]: when a stack trace needs to be performed,
collect \f[I]NUM\f[] frames at the most.
The default is 32.
If \f[I]OUTSPEC\f[] begins with a \f[I]|\f[] character, execute the
rest as a program and feed the data to its standard input.
.IP \[bu] 2
-if \f[I]OUTSPEC\f[] begins with a \f[I]-\f[] character, use the
-rest of OUTSPEC as the filename, but force overwrite any existing
-file by that name
+If \f[I]OUTSPEC\f[] begins with a \f[I]#\f[] character, parse the
+rest as a file descriptor number, and feed the data to this file
+descriptor.
.IP \[bu] 2
otherwise write the data the the named file: note that is a file by
-that name already exists, a warning is issued and profiling is
-disabled.
+that name already exists, it is truncated.
.RE
.IP \[bu] 2
\f[I]report\f[]: the profiling data is sent to mprof-report, which
.IP \[bu] 2
\f[I]nocounters\f[]: disables sampling of runtime and performance
counters, which is normally done every 1 second.
-.IP \[bu] 2
-\f[I]coverage\f[]: collect code coverage data. This implies enabling
-the \f[I]calls\f[] option.
-.IP \[bu] 2
-\f[I]onlycoverage\f[]: can only be used with \f[I]coverage\f[]. This
-disables most other events so that the profiler mostly only collects
-coverage data.
.RE
.SS Analyzing the profile data
.PP
.IP \[bu] 2
\f[I]counters\f[]: counters samples
.IP \[bu] 2
-\f[I]coverage\f[]: code coverage data
-.IP \[bu] 2
\f[I]stats\f[]: event statistics
.PP
It is possible to limit some of the data displayed to a timeframe
To print it to a file, instead, use the option:
.PP
\f[B]--out=FILENAME\f[]
-.SS Processing code coverage data
-.PP
-If you ran the profiler with the \f[I]coverage\f[] option, you can
-process the collected coverage data into an XML file by running
-mprof-report like this:
-.PP
-\f[B]mprof-report --coverage-out=coverage.xml output.mlpd\f[]
.SS Dealing with profiler slowness
.PP
If the profiler needs to collect lots of data, the execution of the