are you sure this is a tomcat reference holding on to it? it could be one of your classes as well, you need to run it through a memory profile in order to find out
Filip -----Original Message----- From: Neil Aggarwal [mailto:[EMAIL PROTECTED] Sent: Monday, December 01, 2003 2:53 PM To: 'Tomcat-User' Subject: Tag Handler pool eating up Memory (and enablePooling is set to false) Hello: We have several tomcat servers running an application. The servers slow down after a few hours of uptime. Looking at the memory usage on the servers, we noticed that the servers seem to be accumulating memory and finally they slow down when the memory utilization becomes high. We are using the IBM JDK 1.4.1 SR1 with Tomcat 4.1.24 on RedHat 9. Using the heapdump utility from the IBM JDK, I generated a heap dump from one of the servers after it had been up for a while. >From that output, I see these pieces of infromation: There were a total of 509,235 objects in memory taking up 67,992,688 bytes. There were 436 instances of org/apache/jasper/runtime/TagHandlerPool. Tracing all of the references from these TagHandlerPool object, they reference a total of 65,010,600 bytes. This means that almost 97% of the memory usage of Tomcat is being referenced from the TagHandlerPool objects. I have enablePooling set to false in the Tomcat's web.xml in the conf directory. It seems that the enablePooling setting is not preventing Tomcat from pooling the tag handlers and they are referencing a lot of memory. Does that setting work in Tomcat 4.1.24? Is there any other reason why Tomcat would behave this way? Thanks, Neil -- Neil Aggarwal, JAMM Consulting, (972)612-6056, www.JAMMConsulting.com FREE! Valuable info on how your business can reduce operating costs by 17% or more in 6 months or less! => http://newsletter.JAMMConsulting.com --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED] --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
