Java Agent causing Out of Memory on JVMs

Products

• CA Application Performance Management SaaS

Issue/Introduction

After upgrading the DX Application Performance Management Agent from 20.3 to 20.6, the agent started to face out of memory.

Environment

DX Application Performance Management SaaS

Cause

After the Dump analysis, we could see Most memory in VirtualStackCursor.decoration. This map usually only populated if there are legacy tracers. You can check if you are using any legacy tracers.

Resolution

There is a workaround for this behavior, please add into your Agent.Profile the following entry:

wily.VirtualStackCursor.maxDecorations=100

Restart the monitored application in order to take effect