Johannes BechbergerMany JFR events don't have any descriptions, so https://sapmachine.io/jfrevents/ now includes code snippets from the events usage in OpenJDK:
@jpbempel.bsky.social
| WEB | http://jpbempel.github.io |
| Blue Sky | @jpbempel.bsky.social |
Jean-Philippe Bempel
- 474 Followers
- 19 Following
- 166 Posts
Sr Sw Eng @Datadoghq, optimize software running on JVM. Love performance topics and mechanical sympathy supporter. Java Champion & @javamissionctrl committer
@jpbempel.bsky.social
@jpbempel.bsky.social
Chris Newland#JDK23 gets its first new intrinsic on method notifyJvmtiDisableSuspend() in class java.lang.VirtualThread
https://chriswhocodes.com/hotspot_intrinsics_openjdk23.html?s=JDK23 #java #jvm
#VMOptionsExplorer updated to #JDK 23 which removes -XX:+TraceICs (trace inline cache changes) and adds -XX:+UseZacas (use the #RISCV atomic CAS instructions) #Java #JVM https://chriswhocodes.com/vm-options-explorer.html
New blog post: Chasing a Metaspace leak
#OpenJDK #Metaspace #MemoryLeak #Instrumentation
https://jpbempel.github.io/2023/12/01/metaspaceleak.html
Java BubbleAwesome #java / #jvm savvy accounts to follow:
👋🏼 Jean-Philippe Bempel - @jpbempel
👋🏼 Sander Mak - @sander_mak
👋🏼 Nicolai Parlog - @nipafx
👋🏼 Philipp Hauer - @philipp_hauer
👋🏼 Java Champions - @JavaChampions
More updates like this? Follow me or #JavaBubbleOrgAccountsRefresher
Source: #javabubble (javabubble.org)
Botdev: @moelholm
Erik ÖsterlundFinally, ”JEP 439: Generational ZGC” has been integrated, and will hence ship in JDK 21. It has been a long bumpy road to take this from prototype to production. This is hands down the most amazing GC algorithm I have ever seen. For more information about this, please read our JEP: https://openjdk.org/jeps/439
This is now the part of JMH Core Benchmarks, an obscure suite to test and validate benchmark environments.
IntelliJ IDEA 2023.1 EAP contains a nice feature: it helps to complete -XX VM options when you are editing the run configuration. Just type -XX: and start typing substring of the option you need.
🐦🔗: https://twitter.com/tagir_valeev/status/1620354382620672002
For the last half year I developed an IntelliJ plugin based on Firefox Profiler, to view JFR files directly in IntelliJ and to profile applications using async-profiler and JFR: I just released the early beta of Java JFR Profiler
https://mostlynerdless.de/blog/2023/01/31/firefox-profiler-beyond-the-web/
🐦🔗: https://twitter.com/parttimen3rd/status/1620373834384936961
Looks at TR 3970X core-to-core latency figures in oscillating awe and disgust. This is a part of "Yea, run 2-thread producer-consumer benchmarks on a large and busy machine, what could possibly go wrong".