If your server was performing well, and then suddenly began these seemingly random slowdowns I would look at recently deployed code. When we experienced these types of problems, we brought in a 3rd party consultancy to help diagnose the problem. Our problem turned out to be code that was recently deployed which contained a CFSWITCH statement inside of a loop that were evaluating as strings, which when under load caused threads to back up and eventually hang the server.
A trick they showed us to diagnose these types of issues was to generate a few thread dumps and compare the results. A thread that was present across the dumps signaled a good place to investigate as a problem area. Here is a tech note on how to capture thread dumps from JRun: http://kb.adobe.com/selfservice/viewContent.do?externalId=tn_18250&sliceId=1 In the thread dump look for lines that begin with "jrpp-", these are the currently processing threads and they will contain the underlying java as well as the CF that were being executed at the time of the dump. HTH, Rich ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~| Check out the new features and enhancements in the latest product release - download the "What's New PDF" now http://download.macromedia.com/pub/labs/coldfusion/cf8_beta_whatsnew_052907.pdf Archive: http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:288622 Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm Unsubscribe: http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=89.70.4
