![]() ![]() The following table lists detailed information on the Azul Zulu versions released with the current update. This release is a quarterly update release for Azul Zulu Builds of OpenJDK version 17, 15, 13, 11, 8, 7, and 6. Coordinated Restore at Checkpoint (CRaC).Azul Zulu 16.30 for macOS (Apple Silicon).Azul Zulu 16.30 for Musl-based Linux on Arm64.Azul Zulu Builds of OpenJDK Release Notes.But I'd love to find a production hardened JDK with Shenandoah. I don't know if this is due to something I've done wrong, the fork join pools, garbage collector, or the OpenJDK. The downside is that after loading my data, I populate additional maps of similar size using ForkJoin pools with between 8 and 32 threads and run some RegEx's, but I can repeatedly crash the JVM. OpenJDK 64-Bit Server VM Temurin-16.0.2+7 (build 16.0.2+7, mixed mode, sharing) OpenJDK Runtime Environment Temurin-16.0.2+7 (build 16.0.2+7) The JDK that I found with Shenandoah support was: openjdk version "16.0.2" By only changing the garbage collector to Shenandoah that time drops to 35 seconds. This is running on Windows Server 2012 R2. So when I simply measure the load time of this data on any JDK 1.8-1.19 without Shenandoah, ie g1gc, it takes about 40 minutes and all 32 cores are 90% busy, much of it in the kernel. I have about 700 million objects that I need to put into those lists and maps. The program is little more than a couple of large array lists and a couple of large ConcurrentHashMaps. I need between 300-400GB of RAM to run my program. ![]() I'm running a very simple program, but very big. But just to point out the benefit of Shenandoah. I wish I had an answer for getting a good reliable JVM with Shenandoah enabled, but I've run into similar issues. Note that the commentary in the above is not mine, but that of the author of the blog posting. GPL-licensed OpenJDK builds, but I wish they'd build all of it. Release, I find it odd for open source builds to exclude one of the However, in a rather feature-light OpenJDK Simply be that they used their standard build scripts to build their These builds aren't supported by Oracle-you need theirĬommercial binaries to get support-so why exclude Shenandoah? It might They aren't doingĪnything strictly wrong by excluding it, but something doesn't feel Together, and Shenandoah went in to JDK 12.Įvidently Oracle has chosen not to build Shenandoah. Select the garbage collectors to include in their builds. ![]() Pluggable garbage-collector interface that allows anyone easily to Told Oracle that we'd work with them to design a really clean Software, so you don't have to support anything you don't want. When we first proposed toĬontribute Shenandoah to OpenJDK, Oracle made it clear that theyĭidn't want to support it. Garbage collector, is a Red Hat-led project. "Not all OpenJDK 12 builds include Shenandoah: Here's why"Ī little history: Shenandoah, a high-performance low-pause-time This situation is explained in an article on Red Hat's blog, excerpted below. ![]() Ubuntu's Java (installed from the package manager) does. The short answer is that Oracle Java and the OpenJDK Java builds available from the official OpenJDK download site DO NOT include support for the Shenandoah GC.īut the good news that many other Java 12+ builds do. ![]()
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