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http://issues.apache.org/bugzilla/show_bug.cgi?id=44237 Summary: Memory consumption is More in Tomcat 5.0 than Tomcat 6.1.4.Memory release is not happening successfully. Product: Tomcat 5 Version: 5.0.0 Platform: Other OS/Version: All Status: NEW Severity: normal Priority: P5 Component: Unknown AssignedTo: [EMAIL PROTECTED] ReportedBy: [EMAIL PROTECTED] CC: [EMAIL PROTECTED] Hi, I am using Tomcat 5.0.0 to deploy my web application.As soon as I run tomcat , it start memory consumption and after I login to my application the memory usage increases.I have taken care of the Threads using in my application so that once logout from the application,they will not be in alive state to hold the memory unnecessarily.But After logout also I found the memory consumption is not reduced. the scenario was like this, Event %Mem %CPU ------------- ------- ------- Before login 3.3 1 After Login 3.4 4 After Logout 3.4 3 Login Again 3.6 4 Navigating to Browse View 4.2 7 After Logout 4.2 2 But when I deployed my application in Tomcat 6.1.4 I found a better performance than earlier,like, Event %Mem %CPU ------------ ---- ---- Before login 3.3 1 After Login 3.4 4 After Logout 3.3 1 (0 after few seconds). Login Back 3.4 4 Browse View 4.6 12 Configure View 5.2 24 logout 4.2 2 (0 after few seconds) login in 4.4 4 logout 4.2 1 login 4.3 3 logout 4.2 1 login 4.4 3 logout 4.4 1 (Here Memory didn't decrease,reason is unknown to me) login 4.6 5 logout 4.5 1 (decreased again) I have some doubt to ask along with this.In Tomcat 5.0.0 , server.xml contains a entry for connector where we can specify the number of connector Threads to be executed by Tomcat.For my case the number is 25.As soon as I run tomcat 25 Threads start running and I got a trace of those as, Thread [http-28080-Processor1](Running) where 28080 is the port number Thread [http-28080-Processor2](Running) Tomcat is using. . . Thread [http-28080-Processor25](Running) When I am login to my application(Sending my request to Tomcat), one thread(say, Thread [http-28080-Processor24]) created by connector, start processing the request and occupied memory increased along with the used CPU cycles. In case of logout again the thread become active, process the request and application logged out. Here no decrement of the memory usage and a small decrement of the used CPU cycle .Now if I suspend(not terminate) the thread which processed the last request,occupied memory is getting released. In this whole process, I ran jConsole utility which has a mechanism to make the object applicable for garbage collection if they are not in use. I used the mechanism but occupied memory never get released till I suspend the connector thread explicitly(Neither terminating the thread nor terminating/restarting the Tomcat).Otherwise memory usage is just keep increasing. I am surprise to see Tomcat 6.1.4 is managing the memory is effective than the earlier version. -Tapas -- Configure bugmail: http://issues.apache.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are the assignee for the bug, or are watching the assignee. --------------------------------------------------------------------- To unsubscribe, e-mail: [EMAIL PROTECTED] For additional commands, e-mail: [EMAIL PROTECTED]
