I am using Tomcat 4.1.29 on solaris 9. I have files uploaded to my
site and then I write them to the temp dir using File.createTempFile()
in anticipation of moving them elsewhere. I have noticed that somthing
else is writing very larg files to this directory as well. Some of the
files are 3GB.
I am having a problem with high CPU utilization by my Tomcat (java)
process.
First some background
Sun V880
Solaris 9
java.runtime.name = Java(TM) 2 Runtime Environment, Standard Edition
java.vm.version = 1.4.1_06-b01
Tomcat 4.1.27
MySQL 3.23.53
Homegrown object cache (eliminates trips to
the behavior, you're in a tougher spot obviously.
What are you using to handle the upload, commons-fileupload?
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Holly, Michael [mailto:[EMAIL PROTECTED]
Sent: Thursday, September 09, 2004 11:07 AM
To: [EMAIL PROTECTED]
Subject
is check out
the new J2SE 5.0 debugging tools.
If you can't reproduce the behavior, you're in a tougher spot obviously.
What are you using to handle the upload, commons-fileupload?
Yoav Shapira
Millennium Research Informatics
-Original Message-
From: Holly, Michael [mailto:[EMAIL PROTECTED
Configure your connection pool to use the 'Test On Borrow' feature.
This will send a small query out to make user the connection is
available before it uses the connection for the larger query. Your
query could be like SELECT 'test' from dual if you are on Oracle.
Hope this helps
Michael
Dave
I'm not sure what your in memory db is but here is how I handled a
similar problem. My application uses connection pooling. I had problems
with my connection pools not being cleaned up. I added a contextListener
that keeps track of the pools and then when the context is destroyed it
cleans
Frans
I use dbcp to pool two different databases on different servers. A mysql
on localhost and an Oracle on a remote host. I have never had a
problem.
I define my pools in my webapp.xml so they are specifically restricted
to the app that uses them. I would examine your dataSourceName and
Dave
You stated that after you start you app CPU goes to 50%. Have you tried
bringing up TC without starting your app? Does load go to 50% then? I
would try bringing up the server without the app started and see what
the load is and then using TC manager start the app and see the effect.
Maybe
Looks like my answer was a bit late... ;^) So ditto to what Pete said.
That's what I get for not reading all my email first before I answer.
Michael
-Original Message-
From: Holly, Michael [mailto:[EMAIL PROTECTED]
Sent: Friday, June 25, 2004 9:00 AM
To: Tomcat Users List
Subject: RE
Stella
I believe you are correct. There are two places that this is usually
set. One is in the
/j2sdk/jre/lib/security directroy/java.policy. The other location is in
/tomcat/conf/catalina.policy
Permissions for the JVM/Tomcat to open sockets, read directories, etc.
are controlled in these
I have written a web app that uses my own object cache, this works great
as a singleton, but would like to eventually get where I can cluster my
servlet container. I have just heard about jcs and jCache. Does anyone
have any other resources for implementing these on a clustered tomcat
4.x? Am
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