[aspectj-users] LTWWorld Memory details

["Prasad, Aditya (GE Healthcare)" <Aditya.Prasad@xxxxxx>]

Hi All

 

I am looking for some clarification on memory consumption of aspectj. I am new to aspect so I don’t have clear understanding of what happens under the hood.

 

I am using aspectj version 1.5.3. I was running yourkit profiler on our application and found lot of memory is consumed by aspect.

 

After my application boots up (Forced GC):

 

1.       org.aspectj.weaver.ltw.LTWWorld is consuming about 41 mb

2.       org.aspectj.apache.bcel.util.ClassLoaderRepository is consuming about 21mb.

 

Screen Shot from YourKit :

 

 

 

After a while memory held drops down :

 

1.       org.aspectj.weaver.ltw.LTWWorld is consuming about 21 mb

2.       org.aspectj.apache.bcel.util.ClassLoaderRepository about 100kb

 

Screen shot from YourKit:

 

 

Total number of class loaded : 8304

Framework : Spring and Hibernate.

 

Questions:

 

1.       Why is so much memory held during startup?

2.       Why so much memory is released and what is the trigger point.

3.       Is there any optimization that I can do ?

 

 

 

Thanks and Regards

-Aditya N Prasad