Simpler version, hoping someone will answer... Is it normal for the amount of threads used by Tomcat to contine to increase to the point where I have thousands of them? This causes the parent thread to use up almost all of the CPU to constantly monitor all these sleeping threads created by Tomcat.
Using Tomcat 3.2.4 on Linux, is this a bug with Tomcat or should I look into our application? Please help! Brandon -----Original Message----- From: Brandon Cruz [mailto:bcruz@;norvax.com] Sent: Wednesday, November 06, 2002 9:36 AM To: Tomcat Users List Subject: Tomcat Threads never stop growing, why? I am using Tomcat 3.2.4. When I start the server, about 300 threads are created, which seems like a lot, but the server runs fine. As time goes on, the amount of threads grows and grows. The threads are all sleeping and don't look like they are taking any resources, but they never close. After a full day, there are well over 700 threads and the parent process for these threads is hogging CPU, RAM is way up, etc. This seems like it may be a Tomcat 3.2.4 issue, but may also be related to the DB connections. We use mySQL database and the mm.mysql driver. We have mySQL set to automatically close DB connections after 15 minutes of non-use, but will that kill the java objects created for the connections or only kill things on the mysql end? Before someone says to use a connection pool, we have hundreds of databases, one for each virtual host client. Where should I start looking? Do we have to do something other than tell mySQL to kill connections, or would this more likely be a Tomcat issue and not even related to DB connections. Finally, if the answer is to use a profiler to monitor this, what is a fairly simple profiler to connect to a remote machine and use for testing? Thanks! Brandon Cruz -- To unsubscribe, e-mail: <mailto:tomcat-user-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:tomcat-user-help@;jakarta.apache.org> -- To unsubscribe, e-mail: <mailto:tomcat-user-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:tomcat-user-help@;jakarta.apache.org>
