Joel
@utvecklarenjoel.bsky.social
OpenJDK/HotSpot/(Z)GC developer at Oracle.
As seen on inside.java, my latest blog post "How ZGC allocates memory for the Java heap" details how ZGC works behind the scenes, doing much more than "just" collecting garbage. Available at: joelsiks.com/posts/zgc-he... #Java #OpenJDK #ZGC
April 17, 2025 at 10:20 AM
As seen on inside.java, my latest blog post "How ZGC allocates memory for the Java heap" details how ZGC works behind the scenes, doing much more than "just" collecting garbage. Available at: joelsiks.com/posts/zgc-he... #Java #OpenJDK #ZGC
Just landed the Mapped Cache in ZGC last week - a project I've been working on for the past 6 months or so. It reduces fragmentation, improves NUMA support and lays the foundation for future enhancements. Check it out at: github.com/openjdk/jdk/... #Java #OpenJDK #ZGC
8350441: ZGC: Overhaul Page Allocation by jsikstro · Pull Request #24547 · openjdk/jdk
Note that any reference to pages from here on out refers to the concept of a heap region in ZGC, not pages in the operating system (OS), unless stated otherwise.
Background
This PR addresses fragm...
github.com
April 14, 2025 at 6:50 AM
Just landed the Mapped Cache in ZGC last week - a project I've been working on for the past 6 months or so. It reduces fragmentation, improves NUMA support and lays the foundation for future enhancements. Check it out at: github.com/openjdk/jdk/... #Java #OpenJDK #ZGC