The JitBuilder library in the Eclipse OMR project is designed to make it easier than ever for people to write JIT compilers, leveraging the high performance JIT compiler component of OMR, which is used at the heart of the Eclipse OpenJ9 Java Virtual Machine and the IBM SDK for Java.

This article is the first in a series that provides useful information for analyzing JIT compiler operations. In this first article I’ll explain how to obtain JIT verbose logs and the basics for how to read them.

Every Wednesday at 11am EST, a few members of the Eclipse OpenJ9 developer community (some days more, some days fewer) get together for about a half hour to discuss topics of relevance for OpenJ9 users and for the OpenJ9 project. We usually meet via a Zoom video conference (Here’s a simple tutorial if you’ve never used Zoom before).

It’s been about two weeks now since we created Eclipse OpenJ9. I thought I’d write a “short” blog entry just to let people know about some of the work that’s been happening at Eclipse OpenJ9 over the last two weeks as we ramp up our open source project activities.