Simulates memory leak to test AppDynamics OIT and Node.js memory metrics
npm install leak-simulatorThe Node.js leak simulator is a simple server script that creates heavy CPU load and a severe memory leak to demonstrate AppDynamics Node.js agent's value in diagnosing memory leaks and excessive resource consumption.
1. Download this package from https://registry.npmjs.org/leak-simulator/-/leak-simulator-1.0.1.tgz to a machine/VM with at least 6 cores and 16 GB of memory.
2. Unzip, open the `index.js file and fill in your AppDynamics configuration details.
3. npm install
4. npm start
5. Go to your controller.
6. When the agent reports, open your controller and navigate to the newly discovered NodeJSLeaker application.
7. Navigate to Tiers & Nodes | faucet<-xxx> | Memory and turn on the switch for Object Instance Tracking.
8. Wait 5-10 minutes.
9. Navigate to Metric Browser | Application Infrastructure Performance | SuperLeak | Node.js to examine CPU, Memory, Garbage Collection and other Node.js server data.
10. Navigate back to Tiers & Nodes | faucet<-xxx> | Memory to see a time graph of each tracked object, as well as to view tracked objects sorted by instance count, shallow size, and other metrics.
10. Navigate to Metric Browser | Application Infrastructure Performance | SuperLeak | faucet<-xxx> | Object Instance Tracking to see all tracked objects and use metrics for specific object(s) to create custom dashboards and health rules/policies under the Alert & Respond` menu.