Tomcat中的内存分配和GC

Question

I am using tomcat-7 and java-8 with spring framework. I just deployed an application in webapps. After that, I monitored memory in visualvm, Below is the screenshot.

There is no hit on tomcat and used heap is increasing and after a limit GC performed. I want to know, If this is normal behaviour or something wrong with my web application.

Answer 1

Yes it is how a healthy application memory usate should looks like.

The reason for the double-sawtooth pattern is that the JVM needs to allocate memory on the heap as new objects are created as a part of the normal program execution. Most of these objects are short-lived and quickly become garbage. These short-lived objects are collected by a collector called “Minor GC” and represent the small drops on the sawteeth

https://plumbr.eu/blog/memory-leaks/memory-leaks-fallacies-and-misconceptions