Petr Bouda

🔥 Jeffrey 0.5 is HERE! 🔥 ✨ Big Upgrade of Java performance detective. Ready to level up your Java performance game?✨ Look at the current features: #features" target="_blank" rel="nofollow noopener">jeffrey-analyst.cafe/#features See it in action: jeffrey-analyst.cafe/#/tour-with-ex… #Java #Performance #JFR #OpenJDK

No longer here: please, follow me on bsky.app/profile/pbouda…

@tstuefe @marchaos Looking forward to the recording! 🙂

@marchaos Many thanks! It has also been great fun. FOSDEM usually is.

Impressions from FOSDEM 25 1/4 @rkennke talking about Project Lilliput (openjdk.org/jeps/450) and its possible future with Lilliput 2. I am proud to have been a part of that. We can boast significant improvements on both footprint memory bandwidth.

🚀 Jeffrey 0.4 - Native Memory Leaks 🚀 jeffrey-analyst.cafe/posts/04-annou…

@richardstartin @jpbempel Good luck in your next career! Jeffrey waits for your expertise! 😀

I’m leaving Datadog at the end of next month and plan to spend some time on personal projects, I’ll probably look at finding another job next September.

🚀 Jeffrey 0.3 Anouncement 🚀 Try it out and give feedback. Plenty of new features, some of them are experimental that wait for your real workloads! Guardians / Wall-Clock / Thread View / and others jeffrey-analyst.cafe/posts/03-annou…

I regret to inform the community that since my own house was destroyed by russians who invaded my country, Wasm3 has entered a minimal maintenance phase.

1st edition was fantastic, 2nd will surely be awesome as well 🙂

📢 It's here! The second edition of my book "Performance Analysis and Tuning on Modern CPUs" is out NOW! Dive into low-level optimizations and learn to write fast code like a pro. Grab your copy: amzn.to/4fsroBs Please RT to spread the word! #NewBook #BookRelease 🧵1/3

@p_bouda @richardstartin #issuecomment-1689454331" target="_blank" rel="nofollow noopener">github.com/async-profiler… This is what async-profiler does (with -e cpu) and there, what's the kernel does with that SW event (which means -> skidding without PEBs help)

@forked_franz @richardstartin I definitely wish! 🙂

@p_bouda @richardstartin given that is a cpu-clock event the translation into "cpu usage" (bad word sorry) is straightforward - I can link what I wrote in an async profiler issue about it if you wish

JEP 450 is not the end of Project Lilliput, btw. We are already busy working on 4-byte headers (down from 12 bytes). In-fact we already have a fully-working prototype. ☺️

@nitsanw @BriceDutheil 2024.geecon.org/recordings/ After sending a small donation for a good thing :)

@p_bouda @BriceDutheil I'm sure it's out somewhere

Slides for my talk from GeeCon, 2024, May 18th: "OOMs... I did it again". Feedback welcome, errors are my own ("how was I supposed to know, that something wasn't right?", right?), as are the horrible jokes. drive.google.com/file/d/1cbXT7I…

🥳 JEP proposed to target JDK 24: 450: Compact Object Headers (Experimental) 🎉 mail.openjdk.org/pipermail/jdk-…

@BriceDutheil @nitsanw Waiting for video 🙂 .. 🖥🍿

@nitsanw Thank you! 🙏

@parttimen3rd Fantastic! Thanks a lot!

Many JFR events don't have any descriptions, so sapmachine.io/jfrevents/ now includes code snippets from the events usage in OpenJDK:

@parttimen3rd @Jepupdates Great job!! .. Looking forward to visualizing JFR with CPU events in Jeffrey 🙂

@Jepupdates It's hopefully not the last state change this year :)

JEP 8337789 ("CPU Time Profiling for JFR") updated: Status changed from "Draft" to "Submitted". See openjdk.org/jeps/8337789

@nitsanw 😀 ... it's gonna be about -XX:+ExitOnOutOfMemoryError !! 😀

I am going to speak at one conference in 2025, and the topic will probably be: "Don't Fear The Reaper: Is it better to crash on your feet or linger on your knees?"