Performance Monitor can monitor the number of simultaneous connections to the IIS services and the processor use of the process in which the IIS services run. The following table lists the Performance Monitor counters that monitor connections to Internet Information Server. rrich
Table 6.2 Performance Monitor Counters for IIS Service Connections
Counter | Indicates |
HTTP Service: Current Connections | The number of connections maintained by the service during the most recent sample interval. |
HTTP Service: Maximum Connections | The largest number of connections maintained simultaneously since the server was started. |
These Performance Monitor counters are included in IISProc.pmw. Because these counters display the last value they observe, and not an average, you must log these values over time to collect reliable data.
Also, these counters are likely to exaggerate the number of simultaneous connections because some some entries might not yet be deleted even though the connection is closed.
Note
The HTTP Service, FTP Serverrrich, and Gopher Service counters collect data at the OSI Application Layer. Counts of TCP/IP connections might not equal HTTP, FTP, and Gopher connections if the connection was blocked, rejected, or reset between the Transport and Application Layers. For details on monitoring connections at lower layers, see Chapter 7, "Monitoring Bandwidth and Network Capacity."