We've got some strange issues with Tomcat locking during multiple
requests/high load.  We are using Tomcat as the sole web server (not
behind Apache) to run a Servlet based web app.  I've got the thread pool
turned on with 10 threads. There is only ONE database method that is
synchronized and a few Corba calls.  We are using Sun's JDK 1.3 on Linux
6.x and Tomcat 3.1.

Here's a scenario that locks it up EVERY time.  I start 5 browsers on one
machine and log in via all 5.   I start 1 browser on another machine (via
KVM switch) and log in.  I simultaneously post two processor intensive
requests (I'm using two mice :) ) via the two machines, then make a
request with each of the 4 remaining browsers on the one machine in very
quick succession.  The entire server seems to hang whenever (and only
when) one (or more) of the requests hits a synchronized method.   Even
static content is inaccessible at this point.

I've read a couple of hints that there are some thread synchronization
issues in JDK 1.3.  Could this be the problem?  Is this a known issue with
the Tomcat version I'm using and should I upgrade to fix it?  Thanks for
any help you can give.  -Devon


-- 
Devon C. Ziegler
[EMAIL PROTECTED]
[EMAIL PROTECTED]
Office: (678) 589-4126

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