$perflib->new($server) 

Creates a connection to the performance counters of the given server.

$perflib->Close($hashref) 

Closes the connection to the performance counters.

GetCounterHelp($server, $hashref) 

Retrieves the counter help strings and their indices from the registry and stores them in the hash reference.

GetCounterNames($server, $hashref) 

Retrieves the counter names and their indices from the registry and stores them in the hash reference.

GetCounterType(countertype) 

Converts the counter type to a readable string.

$perflib->GetObjectList($objectid, $hashref) 

Retrieves the object and counter list of the given performance object.