Try to come up with the minimal test case for the issue.Try narrowing down the bug using techniques from 'Functional Diagnostics' and 'Performance Diagnostics' sections below.Try the latest nightly builds, see the section above.$ docker run -rm -it shipilev/openjdk:11 java -XX:+UseShenandoahGC -Xlog:gc -version $ docker run -rm -it shipilev/openjdk:17 java -XX:+UseShenandoahGC -Xlog:gc -version $ docker run -rm -it shipilev/openjdk java -XX:+UseShenandoahGC -Xlog:gc -version # Update the image to the most recent one: Linux/x86_64 nightly builds are also available as Docker images, e.g.: Linux nightly builds are available at.

There are (nightly/weekly) development builds available at these locations: Notably, CentOS, Oracle Linux, and Amazon Linux are known to ship it.

RHEL/Fedora-based distros or other distros that use packages from them may also have Shenandoah enabled.

Gentoo ebuilds for IcedTea have Shenandoah USE flag.

Debian ships Shenandoah starting with OpenJDK 11.0.9.

Ships Shenandoah in default binaries, starting with OpenJDK 11.0.9.

Shenandoah is shipped and supported starting with SapMachine 17.

Ships Shenandoah in Azul Zulu, starting with OpenJDK 11.0.9.

Does not ship Shenandoah in any release, both OpenJDK builds and proprietary builds.

Ships Shenandoah in Amazon Corretto, starting with OpenJDK 11.0.9.

Red Hat OpenJDK 8u builds for Windows include Shenandoah.

RHEL 7.4+ ships with OpenJDK 8+ that includes Shenandoah as Technology Preview.

OpenJDK 11 requires the opt-in during build time.įedora 24+ OpenJDK 8+ builds include Shenandoah Shenandoah availability differs by vendor and JDK release. OpenJDK 12+ builds normally include Shenandoah by default. If you want to understand the gory details how the changes flow between the development repos and builds, look at this diagram. This means you don't have to select the very latest JDK release to have most of the fixes and conveniences, but later releases might be more up-to-date. See known vendors list below.ĭiscontinued, migrate to 17 as soon as possible. Requires opt-in during build time, check with your vendor for availability. See known vendors list below.ĭiscontinued, migrate to 11/17 as soon as possible. Major GC improvements might ship even later.Īvailable as non-mainline 8u backport. The improvements in shared GC and runtime code might not be easily backportable, although some of them are backported as part of OpenJDK Updates project. Non-critical bugfixes and features may appear in backports a bit later. Critical bugfixes are backported first, and are released as soon as possible.

Shenandoah follows the 'express' development model, where the features and bugfixes are continuously backported to previous supported JDK releases. Downstream backport to OpenJDK 8u is available as well. Shenandoah is in upstream OpenJDK 12+ ( JEP 189), and later contributed to upstream OpenJDK 11u. Please contact Shenandoah devs for guidance if you are willing to port Shenandoah to another platform. Secondary target community tested, part of riscv-port

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