Java 25 Introduces New CPU-Time Profiler for Enhanced Performance Analysis
By
SerCe
Pulled from the oven just right. Trustworthy, fact-dense, deeply satisfying.
Summary
The article introduces a new CPU-time profiler that has been added to Java with OpenJDK 25 after more than three years of development. This experimental profiler/method sampler helps developers identify performance issues in their code and offers distinct advantages over existing samplers. The content is written by the creator of the profiler and serves as the first part of a two-part series, with this week's post covering the need for the new profiler and its capabilities, while next week's will delve into technical internals beyond what's documented in JEP 509.
Key quotes
· 3 pulledMore than three years in the making, with a concerted effort starting last year, my CPU-time profiler landed in Java with OpenJDK 25.
It's an experimental new profiler/method sampler that helps you find performance issues in your code, having distinct advantages over the current sampler.
This week, I will cover why we need a new profiler and what information it provides; next week, I'll cover the technical internals that go beyond what's written in the JEP.
You might also wanna read
Java JDK 25 Reaches General Availability with 18 New Features
JDK 25, the reference implementation of Java 25, has reached General Availability status. The release includes build 36 as the GA build, whi
Why Average LLM Use Is Likely Destroying Value in Software Development
The author argues that, contrary to prevailing hype, the average use of Large Language Models (LLMs) is likely destroying value rather than
unessays.substack.com·11h ago
How AI Accelerated Prototyping: From Idea to Tangible in Record Time
The author reflects on how AI has transformed their prototyping workflow. Previously, the biggest bottleneck was the time needed to scaffold
darylcecile.net·11h ago
GitLab 19.0 launches with Secrets Manager, agentic workflows, and self-hosted AI models
GitLab 19.0 has been released, positioning itself as an intelligent orchestration platform for DevSecOps. The release includes expanded secr
bit.ly·1d ago
Centralizing Error Handling in Rust with Custom AppError Enums
This article discusses the importance of centralizing error handling in Rust applications using a custom AppError enum combined with map_err
Zig Devlog: Build System Rework Separates Maker and Configurer Processes
This devlog entry from the Zig programming language project announces a major rework of the build system, separating the maker process from
ziglang.org·1d ago