AspProcessorThreadMax Metabase Property

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

The AspProcessorThreadMax property specifies the maximum number of worker threads per processor that IIS may create.

Note

This setting can dramatically influence the scalability of your Web applications, and the performance of your server in general. Because this property defines the maximum number of ASP requests that can execute simultaneously, this setting should remain at the default value unless your ASP applications are making extended calls to external components. In this case, you may increase the value of AspProcessorThreadMax. Doing so allows the server to create more threads to handle more concurrent requests.

If the value of this property is changed, the Web server instance must be stopped and restarted for the change to take effect. The World Wide Web Publishing Service (WWW 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 ignores in-process and pooled out-of-process applications. However, settings at the Web server level or lower are used if that node is an isolated out-of-process application.

Attribute Name	Attribute Value
XML Data Type	DWORD
WMI Data Type	SINT32
ADSI Data Type	DWORD
ABO Data Type	DWORD
ABO Metabase Identifier	MD_ASP_PROCESSORTHREADMAX
Attributes	INHERIT
Default Value	10
MetaFlagsEx	CACHE_PROPERTY_MODIFIED
User Type	iis_md_ut_wam
ID	7025

Configurable Locations

You can configure this property at the following locations in the IIS metabase.

Metabase Path	IIS Admin Object Type
/LM/W3SVC/n/ROOT /LM/W3SVC/n/ROOT/virtual_directory_name	IIsWebVirtualDir
/LM/W3SVC/n	IIsWebServer
/LM/W3SVC	IIsWebService
/LM/W3SVC/n/ROOT/physical_directory_name /LM/W3SVC/n/virtual_directory_name/physical_directory_name	IIsWebDirectory

Code Example

For general code examples, see Code Examples to Configure Metabase Properties.