Using Builtin profiler to identify thread overhead in BIND9.3.1

[narendar reddy]

hi all,
I want to use built in simple profiler to identify,
what is the waiting time period of each thread, How much time lock is being
held.
what things i have to do in   bind-9.3.1\lib\isc\pthreads \mutex.c
   ISC_MUTEX_PROFILE  declaration.
I dont know where(in which directory) the stats file will be created by the
built in profiler.