Java is the best way to determine the -Xmx and -Xms needed for any webapp and standalone application

Question

I would like to know how to determine the heap size needed for a stand-alone application, as well as the webapp running on the tomcat server.

How to determine the same after deployment on the server.

Thank.

Answer 1

. , JDK (6 ) Visual VM. , , Eclipse Memory Analyzer, SAP, . Java- .

, this

Answer 2

, IBM Java, IBM SDK, , SDK.

Java, 40% 70%.

Answer 3

-Xloggc:gc-log.txt -XX:+PrintGCdetails () hig Xmx, GCViewer, , , , , GC, ..

Answer 4

IBM, @Vipin.