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WMI Performance Adapter (System Services for the Windows Server 2003 Family and Windows XP Operating Systems)

Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Service Name: WmiApSrv

Executable Name: Wmiapsrv.exe

Log On As: LocalSystem

Description: The WMI Performance Adapter service provides performance library information from WMI HiPerf providers. Applications and services that need to provide performance counters today can do so in two ways: by writing a WMI High Performance provider, or by writing a performance library. Consumers of high performance data also have two ways to request performance data: through WMI, or through the Performance Data Helper (PDH) APIs. There are mechanisms in place so that the two models interact together, and clients accessing counters through each model can still see the counters provided by the other model. The Reverse Adapter is one of those mechanisms.

The WMI Performance Adapter service transforms performance counters supplied by WMI High Performance providers into counters that can be consumed by PDH through the Reverse Adapter Performance Library. This way, PDH clients (for example, System Monitor) can consume performance counters surfaced by any WMI High Performance providers on the computer.

The startup type is Manual and the service is not running by default. It runs on demand when a performance client (for example, System Monitor) uses PDH to query performance data. After the client disconnects, the service stops.

This service runs on demand when a performance client, (for example, System Monitor) uses PDH to query performance data. After the client disconnects, the service stops.

Available on: Windows Server 2003, Standard Edition; Windows Server 2003, Enterprise Edition; Windows Server 2003, Datacenter Edition and Windows Server 2003, Web Edition

Installed through: Default operating system installation

Startup type: Manual

Service status: Stopped

This service depends on the following system components:

Remote Procedure Call (RPC)

The following system components depend on this service:

None

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