-This is equivalent to the value \[lq]cycles/100\[rq] for
-\f[I]TYPE\f[].
-On some systems, like with recent Linux kernels, it is possible to
-cause the sampling to happen for other events provided by the
-performance counters of the cpu.
-In this case, \f[I]TYPE\f[] can be one of:
-.RS 2
-.IP \[bu] 2
-\f[I]cycles\f[]: processor cycles
-.IP \[bu] 2
-\f[I]instr\f[]: executed instructions
-.IP \[bu] 2
-\f[I]cacherefs\f[]: cache references
-.IP \[bu] 2
-\f[I]cachemiss\f[]: cache misses
-.IP \[bu] 2
-\f[I]branches\f[]: executed branches
-.IP \[bu] 2
-\f[I]branchmiss\f[]: mispredicted branches
-.RE
-.IP \[bu] 2
-\f[I]time=TIMER\f[]: use the TIMER timestamp mode.
-TIMER can have the following values:
-.RS 2
-.IP \[bu] 2
-\f[I]fast\f[]: a usually faster but possibly more inaccurate timer
-.RE
+This is equivalent to the value \[lq]100\[rq].
+A value of zero for \f[I]FREQ\f[] effectively disables sampling.