RE: Sorry, message sent 3 times in error

[Joel - Jakarta List <ja...@poptarantula.com>]

I apologize, I mistakenly sent my message 3 different times.  When my first
post did not arrive within 2 hours, I assumed there must be security
restrictions on which mail accounts can post messages.  Thus, I tried again
with a different account.  This was entirely my error....sorry :)

-----Original Message-----
From: midian [mailto:midian@PopTarantula.com]
Sent: Tuesday, May 22, 2001 9:40 AM
To: 'tomcat-user@jakarta.apache.org'
Subject: Thread deadlocking in 3.2.2 beta 5?


Hello,

    I have an app I just ported to Tomcat 3.2.2 beta 5 that runs fine for a
while, and then begins to run slower and slower until it dies.  From looking
at the log files, it appears that 3.2.2 beta 5 is thread deadlocking and
thus running out of resources.  The log file shows "Full thread dump..."
sections where you can see the JVM is having problems releasing threads.
The really weird thing is that this is not a high volume server.  It
received no more than 300 hits over the period of a week.  However, that was
enough traffic to kill it.
    I have the same exact app running on another machine under 3.2.1 with no
problems.  If you look at the log file on the 3.2.1 machine, there are no
"Full thread dump..." errors and the app has been up for months.  Thus,
something appears to have changed between these versions that is affecting
my app's thread usage.
	There are a few environmental differences between the two
implementations of Tomcat.  I have 3.2.2 beta 5 on a quad processor WinNT 4
Sp6a machine w/128mb allocated to Tomcat. 3.2.1 runs on a single processor
Win2K server w/64mb allocated to Tomcat.  Could the multi-processor server
be a factor?  Both servers are using Sun JDK 1.2.2.
	Since the log file to 3.2.2 beta 5 is so big, I have posted it to
the URL : http://www.poptarantula.com/logs/jvm.stderr_5_22_01.txt

	Does any one have any idea what could be causing this behavior?  Are
there any known fixes?  Thank you in advance for your help.

Best regards,

Joel Kozlow

joel_kozlow@non.hp.com
Sn. Developer
Hewtlett-Packard