Tell me more ×
Server Fault is a question and answer site for professional system and network administrators. It's 100% free, no registration required.
up vote 1 down vote favorite

We have the IIS Crash/Hang agent installed on the production IIS servers. It seems to record quite a lot of start/stop events. Do these imply that something is really happening? if so, what other events should I be looking for to correlate? I don't see anything that looks significant except possibly for an ASP .NET event that's pretty much "invalid session id"

share|improve this question
How about giving us some details about the events that are being logged. – joeqwerty May 26 '11 at 16:55
Agreed. Also, set LogEventOnRecycle=255 and see if it correlates with App Pool shutdowns (recycling). – TristanK May 26 '11 at 22:22

1 Answer

up vote 0 down vote

This is probably just normal recycling behaviour.

By default, IIS App Pools will recycle:

  • every 29 hours or
  • every time they reach 20 minutes without activity

They're started on demand, i.e. when a request arrives.

Setting LogEventOnRecycle to 255 - everything on - will help you correlate Start/Stop events with app pool activity.

(IIS6: http://support.microsoft.com/kb/332088 ; IIS 7 exposes the possible flags through advanced App Pool properties, Recycling)

You haven't specified anything except "invalid session ID" - what are you looking for?

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.