The AspThreadGateLoadHigh property specifies the minimum CPU load, as a percentage of the total, at which the CPU is considered under high load conditions. This information will be used by IIS to perform thread gating, in an attempt to maintain CPU load between the percentages specified in AspThreadGateLoadLow and AspThreadGateLoadHigh.
IIS performs thread gating to dynamically control the number of concurrently executing threads, in response to varying load conditions. The default settings for this property, and the other thread gating properties, are designed to be appropriate for the majority of server configurations and traffic conditions. Changing these properties can lead to significant performance degradation.
The Web service setting for this property is applicable to all in-process and pooled out-of-process application nodes, at all levels. Metabase settings at the Web server level or lower will be ignored for in-process and pooled out-of-process applications. However, settings at the Web server level or lower will be used if that node is an isolated out-of-process application.
You can configure this property at the following locations in the IIS metabase.
IIS Admin Object Type
Client: Requires Windows XP Professional, Windows 2000 Professional, or Windows NT Workstation 4.0.
Server: Requires Windows 2000 Server, or Windows NT Server 4.0.