I have a couple machines with high load like you mention. I have just
updated them all the latest jvm 1.4.2_6 And the new drivers mm suggests.

1 machine has run flawlessly for about 1 week, before it was tanking like
every other day. The other had one blip after 4 days and now is looking
good.

I suspect from reading a lot of messages about this it is not an easy fix. I
would try the updates and if you still have trouble its time to start the
jrun logging and garbage collecting logging and get greasy under the hood.

I have seen a lot of people tinkering with the jvm arguments, it appears
that depending on your application they might be able to be optimized to fit
your load.

If you haven't don't those 2 updates I would do so asap, let me know how it
goes

gabe

 

-----Original Message-----
From: Katz, Dov B (IT) [mailto:[EMAIL PROTECTED] 
Sent: Monday, November 29, 2004 7:14 AM
To: CF-Talk
Subject: RE: Mx hanging no available threads

With the metrics you've been doing, have you come to a conclusion as to how
to avoid this?  Are there better garbage collection flags to set up
with CFMX than what's running by default?   

I've seen a death of my server, but it's ended up manifesting itself in
arbitrary requests returning Jrun Connection Protocol Error, (some threads
return that, others work just fine)...  ultimately leading to a "Cannot
connect to the Jrun Server" (when cfmx just dies out)...

I have a pretty heavy load on the machine (600k hits a day or
thereabouts)....  Any ideas would be appreciated...


Dov Katz

-----Original Message-----
From: Robertson-Ravo, Neil (RX)
[mailto:[EMAIL PROTECTED]
Sent: Monday, November 29, 2004 4:26 AM
To: CF-Talk
Subject: RE: Mx hanging no available threads

Hmmm, we have been doing some very intensive metrics on servers like these
and what you are seeing it more than likely caused by Garbage Collection.
What are the specs of the machines you are seeing this on?

N




-----Original Message-----
From: gabriel l smallman [mailto:[EMAIL PROTECTED]
Sent: 28 November 2004 16:39
To: CF-Talk
Subject: Mx hanging no available threads

I just update my jvm to 1.4.2_6 and installed new drivers. After running
perfectly for about 4 days she hung up. I took a look in the default-err.log
to find a bunch of these

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$Throttle.enter(ThreadPool.java:125)
        at
jrunx.scheduler.ThreadPool$ThreadThrottle.invokeRunnable(ThreadPool.java
:448
)
        at
jrunx.scheduler.ThreadPool$UpstreamMetrics.invokeRunnable(ThreadPool.jav
a:29
4)
        at jrunx.scheduler.WorkerThread.run(WorkerThread.java:66)

Has anyone encountered issues like this before?

gabe 








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