Java Flight Recorder (JFR) enables low-overhead profiling to diagnose CPU spikes, which occur when threads excessively consume CPU resources, often due to infinite loops or inefficient code. This blog outlines causes, simulates the issue, captures JFR data, and analyzes it to identify performance bottlenecks, specifically within the CPUSpikerThread class.
We recently hosted a webinar on how micro-metrics can help detect performance issues before they cause outages. While traditional metrics often miss hidden problems, experts shared 7 key micro-metrics that can spot early signs of issues like memory leaks and CPU spikes. The session also covered real-world examples and practical tips for preventing performance failures.
Detecting CPU spikes in a Java application is important for keeping it running smoothly. This can happen because of things like lots of calculations, user actions, other tasks running in the background, or code that could be made better. The post talks about fixing CPU spike issues in Dell Boomi servers and doing tests to make CPU spikes happen in Boomi using the buggyApp tool. It also mentions using performance monitoring tools for keeping an eye on performance and figuring out why problems happen.
This post explains how to diagnose CPU spike problems that surfaces in the Spring Boot applications.
This blog post addresses troubleshooting JVM CPU spike errors on ServiceNow servers, focusing on simulating such spikes using a Java program on the MID Server. It outlines causes of CPU spikes and guides on setting up the MID Server. yCrash is introduced as a monitoring tool that effectively diagnoses CPU spike issues and aids in resolution strategies.
The Spring Boot Buggy API is an open-source tool for simulating various performance issues like memory leaks and CPU spikes in applications. By testing these scenarios, developers can assess system resilience and evaluate performance monitoring tools. It allows easy invocation of specific problems to analyze system behavior and improve software robustness.
Many Java applications still use files for importing and exporting data. If the connections to these files are not properly managed, it can lead to a significant number of connections leaking, causing the application to slow down or even crash. In our series of chaos engineering articles, we have been learning how to simulate various... Continue Reading →
SpringBoot is a widely used framework for building Java-based web applications and maintains a significant presence in the world of enterprise software development. It powers large-scale microservices and standalone applications. Most SpringBoot applications have embedded web servers and follow a distributed architecture consisting of three main types of application components: Backend: API services Backend: Event... Continue Reading →
This post outlines a non-intrusive method for diagnosing CPU spikes in Java Virtual Machine (JVM) applications using the open-source yCrash data script. It captures 360° data without significant overhead, enabling thorough analysis of CPU-consuming threads. Users can diagnose issues and obtain root cause reports efficiently, aiding in effective troubleshooting.
This article discusses simulating and troubleshooting CPU consumption spikes in Scala. A sample program creates six threads that enter infinite loops, causing 100% CPU usage. Troubleshooting can be done manually by capturing thread dumps or using an automated tool like yCrash, which provides detailed analysis and identifies problematic threads and code lines causing the spikes.
