WCF has its own counters, this will help you get the necessary information.
for this you must enable them
like this
<configuration>
<system.serviceModel>
<diagnostics performanceCounters="All" /> // use this line.
</system.serviceModel>
</configuration>
, visble hwn.
ServiceModelEndpoint 3.0.0.0 + ServiceModelOperation 3.0.0.0 + ServiceModelService 3.0.0.0
, ServiceModelOperation 3.0.0.0 u , /.