Solutions > AppInsight Applications > Understanding AppInsight for IIS > Worker Process Activation Service

Worker Process Activation Service

This resource contains monitors specific to the worker process activation service for the current application pool. The icons of the listed performance counters in the Statistic Name column will change color to reflect the listed counter's current state. Clicking any performance counter in the Statistic Name column will take you to the Performance Counter Details page for that performance counter.

If the value of a listed performance counter approaches or crosses the Warning threshold, a yellow band will appear for the listed counter allowing plotted values that cross the threshold to easily be visualized against the yellow band. If the value of a listed performance counter approaches or crosses the Critical threshold, a red band will appear for the listed counter allowing plotted values that cross the threshold to easily be visualized against the red band. Hovering over any time period within the chart will display detailed information about that time period in the tooltip. Hovering over a counter will give you detailed information about that performance counter.

Counter Expert Knowledge Warning

Current Worker Processes

Description:
This displays the current number of worker processes that are running in the application pool.

 

Recent Worker Process Failures

Description:
This displays the number of times that the worker process for the application pool failed during the rapid-fail protection interval.

Information:
This counter should be counted as difference with a threshold greater than 0.

> 0 (CaD enabled)

Total Application Pool Recycles

Description:
This displays the number of times that the application pool has been recycled since Windows Process Activation Service (WAS) started.

Information:
This counter should be counted as difference with a threshold greater than 0.

> 0 (CaD enabled)
Total Worker Process Failures

Description:
This displays the number of times that worker processes have crashed since the application pool was started.

Information:
This counter should be counted as difference with a threshold greater than 0.

> 0 (CaD enabled)
Total Worker Process Ping Failures

Description:
This displays the number of times that Windows Process Activation Service (WAS) did not receive a response to ping messages sent to a worker process.

Information:
This counter should be counted as difference with a threshold greater than 0.

> 0 (CaD enabled)
Total Worker Process Shutdown Failures

Description:
This displays the number of times that Windows Process Activation Service (WAS) failed to shut down a worker process.

Information:
This counter should be counted as difference with a threshold greater than 0.

> 0 (CaD enabled)
Total Worker Process Startup Failures Description:
This displays the number of times that Windows Process Activation Service (WAS) failed to start a worker process.

Information:
This counter should be counted as difference with a threshold greater than 0.
> 0 (CaD enabled)

Zooming

You can have the chart show a predetermined time period of data by clicking on any one of the three Zoom buttons in the head of the Zoom column. Alternatively, you can have the chart show a specific date range by dragging the mouse over an area of the chart. The time and date displayed at the top of the resource shows the amount of data currently loaded into the chart. This can be changed by clicking Edit from within the resource.

The Value from Last Poll column shows the most recent data available for the listed statistic.