Request timed out waiting for an available thread to run

[coldmusion]

Running 6.1 on red hat 7.2 with MySQL 4.0.26

As of yesterday after roughly an hour sites appear to stop working and I see
the following over and over again in cfserver.log

java.lang.RuntimeException: Request timed out waiting for an available thread
to run. You may want to consider increasing the number of active threads in the
thread pool.
at jrunx.scheduler.ThreadPool$Throttle.enter(ThreadPo ol.java:125)
at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRu nnable(ThreadPool.java:448)
at
jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeR unnable(ThreadPool.java:294)
at jrunx.scheduler.WorkerThread.run(WorkerThread.java :66)

I've tried increasing the "Maximum number of simultaneous requests"
dramatically but it appears to have no difference.

Any ideas?

[xentrix]

Try this [url]http://www.macromedia.com/cfusion/knowledgebase/index.cfm?id=tn_19351[/url]

Andy

[robisen@gmail.com]

Also have you load tested your system? While you should defintely do
what Xentrix sugested your CF server can throw this error for a very
large number of reasons. I suggest you also read

[url]http://www.robisen.com/index.cfm?mode=entry&entry=FD4BE2FC-55DC-F2B1-FED0717CC1C7E0AF[/url]

as well as
[url]http://www.robisen.com/index.cfm?mode=entry&entry=4A30683D-1111-5896-40536407D49F8877[/url]