IIS Worker Process Dynamic Idle
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 |
|---|---|---|
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. | |
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. | |
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. | |
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. | |
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. | |
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. |