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IIS Worker Process Dynamic Idle

Updated: March 24, 2009

Applies To: Windows Server 2008 R2

The Internet Information Services (IIS) Worker Process Activation Service (WAS) can dynamically adjust the idle time-out of worker processes based on current load. You can specify the maximum number of worker processes that can run concurrently on a Web server. If the maximum number is reached and dynamic idle is enabled, WAS dynamically reduces the idle time-out. This could allow new worker processes to start sooner and prevent the Web server from becoming unresponsive.

Events

Event ID Source Message

5192

Microsoft-Windows-WAS

The dynamic idle load is '%1' percent of the dynamic idle threshold. The Windows Process Activation Service (WAS) will start to reduce worker process idle timeouts. Current number of worker processes: '%2', current total commit: '%3' MB, total physical memory: '%4' MB, current physical memory free: '%5' MB.

5193

Microsoft-Windows-WAS

The dynamic idle load is '%1' percent of the dynamic idle threshold. The Windows Process Activation Service (WAS) will start to aggressively reduce worker process idle timeouts. Current number of worker processes: '%2', current total commit: '%3' MB, total physical memory: '%4' MB, current physical memory free: '%5' MB.

5194

Microsoft-Windows-WAS

The dynamic idle load is '%1' percent of the dynamic idle threshold. The Windows Process Activation Service (WAS) will return worker process idle timeouts to their configured settings. Current number of worker processes: '%2', current total commit: '%3' MB, total physical memory: '%4' MB, current physical memory free: '%5' MB.

5195

Microsoft-Windows-WAS

A worker process with process id of '%1' serving application pool '%2' was shutdown due to inactivity. The system is under high load and has decreased the idle timeout of this worker process to '%4' minutes from its original '%3' minutes. A new worker process will be started when needed.

5196

Microsoft-Windows-WAS

A request to create a new worker process has arrived. The '%1' setting has been reached. The Windows Process Activation Service (WAS) will not start any worker processes until this drops.

5197

Microsoft-Windows-WAS

The dynamic idle has been disabled in configuration. The Windows Process Activation Service (WAS) will return worker process idle timeouts to their configured settings.

Related Management Information

IIS Windows Process Activation Service (WAS)

Internet Information Services (IIS) 7.5

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