>What exactly are you doing to check your website every two minutes? If I'm
>not mistaken, CF Executive should be monitoring unresponsive threads and
>restart the CF Application server as needed. There's a settings within the
>CF Administrator to adjust the count of number of unresponsive threads at
>which you have the service restarted.
I use Launchpad (a cron like utility on NT) to run a batch file on the
server every 2 minutes. This batch file checks if the w3svc service is
still running and if so uses wget to fetch a test page with a timeout of 30
seconds. If w3svc is not running IIS is restarted.
The test page is fetched in 1.4 seconds under idle conditions extending to
15 seconds at peak load. If the test page cannot be fetched or the title
begins with "Error" then CF is restarted.
Error in the title is typical of the problems being experienced. Pcode
errors, occasional CF 404 errors even though the template in question has
not changed or moved.
CF Server settings:
Limit simultaneous requests to 5
Timeout requests after 60 seconds (ticked)
Restart at 5 unresponsive requests (ticked)
Enforce Strict Attribute Validation (ticked)
Template Cache Size: 2048 kilobytes
Trusted Cache (NOT ticked)
Limit database connection inactive time to 60 minutes
Limit the maximum number of cached queries on the server to 100 queries
The server does not necessarily become unresponsive and the CF queued
requests do not rise. It returns errors where there should be none. On
some occasions similar requests running the same code with different
parameters will return very different results even when they should not.
>Are you running SQL Server on the same machine as IIS and CF?
SQL server is running on the same server as CF and I have asked for another
server to host it. I may investigate using the standby server as the SQL
server but it resides on another campus.
Mdeamon mail server and Webmaster IRC server are also running on the same
server.
Bruce Ford [EMAIL PROTECTED]
Online Teaching Systems Coordinator
Teaching and Learning Support Services Ph: +61 7 3864 9773
Queensland University of Technology
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