🔥 Part 2 of my Jeffrey series on DZone — Differential flame graphs. Set a secondary profile and diff two recordings in one graph: red = regression, green = improvement, deep shades = frames that only exist on one side. No more eyeballing two graphs. dzone.com/articles/jav... #Java

🔥 New on DZone — part 1 of my Jeffrey series, an open-source performance analyzer for Java. Spin up Microscope, drop in a recording, read the flame graph: CPU, allocation, wall-clock. Plus "Copy for AI" to hand hot paths to an LLM. dzone.com/articles/jef... #Java

New Jeffrey Two Products Release 0.8.0. 🚀🤘 .. check it out here. www.linkedin.com/posts/petr-b...

New Easter Release of Jeffrey 0.7.0 is out! 😉

HTTP over Unix Domain Socket openjdk.org/jeps/8377806 It's never too late, but still it should have been possible since jdk11. This draft appears to support passing a SocketAddress. But it will only support UDS at least at first. That said other concerns remain... blog.arkey.fr/2026/02/08/t...

📢 Microsoft is hiring a Senior Compiler Engineer to work on the #JVM! If you have strong compiler / codegen / optimization skills, this could be your next big challenge. Want a referral? Send me a DM. #Hiring #CompilerEngineering #Systems #Microsoft #Java #OpenJDK #Java25

🔥 Jeffrey 0.5 is HERE! 🔥 ✨ Big Upgrade of Java performance detective. Ready to level up your Java performance game?✨ Look at the current features! 🔗 www.jeffrey-analyst.cafe#features #Java #Performance #JFR #OpenJDK

I just updated the JFR events collection (sapmachine.io/jfrevents). It now includes JDK 25 and JDK 26 with my CPUTimeSample event:

Insightful session on advanced performance analysis with async-profiler, presented by Andrei Pangin. 🎥 www.youtube.com/watch?v=u7-S... #Java #Performance #Profiling

TIL: since jdk22 you can use the JVM option -XX:LogClassLoadingCauseFor=com.mycompany.MyClass in conjunction with -Xlog:class+load+cause* to find out the stacktrace that triggers the load of the specify class. see github.com/openjdk/jdk/...

🥳🥳 github.com/async-profil...