pcq

Overview ¶

The pcq package implements the PCQ client protocol.

Introduction ¶

The Performance Counter Query Protocol is a remote procedure call (RPC)–based protocol that is used for browsing performance counters and retrieving performance counter values from a server.

Overview ¶

To effectively manage systems, administrators need the capability to query for performance counter data on the health or state of a particular application or system. Software components that are designed with performance counters are therefore easier to manage and diagnose. The Performance Counter Query Protocol enables system administrators to query performance counters on a remote server.

The Performance Counter Query Protocol is used to retrieve performance counter information from a server. The protocol allows a client to enumerate the performance counters that are available on the server. The server can use the protocol to return performance counter information, such as localized counter names and description strings, performance counter types (for more information, see [MSDN-COUNT]), and instance information if there are multiple instances of a performance counter. The client can also use the protocol to establish a query on the server and add or remove performance counters to it. The client can then repeatedly retrieve performance counter data that is associated with the query by using the protocol.