IIS application pool failed to respond to ping

Posted by Zimmy-DUB-Zongy-Zong-DUBBY on Server Fault See other posts from Server Fault or by Zimmy-DUB-Zongy-Zong-DUBBY
Published on 2010-02-08T19:38:10Z Indexed on 2010/03/26 5:03 UTC
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iis

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windows-server-2003

I have been investigating a problem that occurred on a Windows 2003 server a few days ago. there are about 15 app pools, and within a few minutes, they all produced the error below in the system log:

A process serving application pool 'Pool 31x' failed to respond to a ping. The process id was '7144'.

The pools were then restarted automatically, but timed out during startup, leaving all sites down.

My question is: what would cause a "ping timeout" to all of the app pools around the same time, and then why would they start up too slowly?

The app in each pool is a WCMS which uses the .NET 1.1 framework. It connects to a remote DB but is otherwise independent of other machines.

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