This article explores the simulation of the 'java.lang.OutOfMemoryError: Java Heap space' in Java applications. It presents a sample program that continuously adds records to a HashMap until the heap size is exceeded, causing the error. The post discusses both manual and automated approaches to troubleshoot this issue effectively.
This article explains how to simulate 100% CPU consumption using an infinite loop in multiple threads with Java's BuggyApp application. It details the implementation of the 'CPUSpikeDemo' and 'CPUSpikerThread' classes. The author also suggests methods for diagnosing spikes, including manual thread dumps and automated analysis tools like yCrash for root cause identification.
Buggy App is a Java application designed to simulate various performance problems like memory leaks, CPU spikes, and deadlocks. It allows users to test their application’s resilience and performance monitoring tools under stress. Users can launch Buggy App with specific arguments to replicate issues such as high memory usage or network lag effectively.