Tencent Kona JDK11 is a no-cost, production-ready distribution of the Open Java Development Kit (OpenJDK), Long-Term Support(LTS) with quarterly updates. Tencent Kona JDK11 is certified as compatible with the Java SE standard.

Update to 11.0.17-GA

openjdk version "11.0.17" 2022-10-24
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.17+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.17+1, mixed mode)

• Update to jdk-11.0.17
• JDK-8221872: Remove uses of ClassLoaderWeakHandle typedef in protection domain table
• JDK-8072498: Multi-thread JNI weak reference processing
• JDK-8221393: ResolvedMethodTable too small for StackWalking applications

Update to 11.0.16.1-GA

openjdk version "11.0.16.1" 2022-08-16
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.16.1+2)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.16.1+2, mixed mode)

• Update to jdk-11.0.16.1
• 8292260: [BACKOUT] JDK-8279219: [REDO] C2 crash when allocating array of size too large

Update to 11.0.16-GA

openjdk version "11.0.16" 2022-08-10
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.16+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.16+1, mixed mode)

• Update to jdk-11.0.16
• G1: RedefineClasses performance optimize
• ZGC: Move relocation logic from ZPage to ZRelocate
• ZGC: Break out forwarding information from ZPage
• JDK-8277212: GC accidentally cleans valid megamorphic vtable inline caches
• JDK-8072070: Improve interpreter stack banging
• FIX(GC): fix the build failure of "--with-jvm-features=shenandoahgc"
• Mac aarch64 support

Update to 11.0.15-GA

openjdk version "11.0.15-fiber" 2022-06-30
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.15-fiber+2)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.15-fiber+2, mixed mode)

Features

• Support network operation of virtual thread which will not block carrier thread.
• Automatic compensate when using ForkJoinPool as scheduler of virtual thread while all carrier thread alloc Object Monitor fail.

Update to 11.0.12-GA

openjdk version "11.0.12-fiber" 2021-08-23
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.12-fiber+11)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.12-fiber+11, mixed mode)

Features

• Kona11 Fiber version, including Kona Fiber developed by Tencent

Update to 11.0.15-GA

openjdk version "11.0.15-ga" 2022-04-28
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.15-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.15-ga+1, mixed mode)

Features

• FEAT[GC]: lightweight rs log
• FEAT(appcds): Store old classfiles in static CDS archive
• 8260282: Add option to compress heap dumps created by -XX:+HeapDumpOnOutOfMemoryError
• 8256450: Add gz option to jmap to write a gzipped heap dump

Bugs

• 8265119: G1: update_remset_before_rebuild mixes liveness in words with liveness in bytes

Update to 11.0.14-GA

openjdk version "11.0.14-ga" 2022-02-17
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.14-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.14-ga+1, mixed mode)

Features

• Feature(GC): support uncommit heap memory after G1 Full GC
• Feature(jfr) Add unsafe allocation event to jfr

Update to 11.0.13-GA

openjdk version "11.0.13-fiber" 2021-12-01
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.13-fiber+11)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.13-fiber+11, mixed mode)

Features

• Support virtual thread yield with Java Monitor(not pin anymore)
  • Use -XX:+YieldWithMonitor to enable this feature(enable by default)
• Support deadlock test of virtual thread

Update to 11.0.13-GA

openjdk version "11.0.13-ga" 2021-11-12
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.13-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.13-ga+1, mixed mode)

Features

• Provide Windows/Macos x86 build.
  • Please note that windows/Macos x86 build have not undergone large-scale verification and is for trial use only.

ZGC Features

• Handle incorrect processor id reported by the operating

Update to 11.0.8-GA

openjdk version "11.0.8-vectorapi" 2019-03-30
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.8-vectorapi+3-20210106)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.8-vectorapi+3-20210106, mixed mode)

Features

• Tencent Kona JDK11 Vector API version, including Vector API support

Update to 11.0.12-GA

openjdk version "11.0.12-ga" 2021-08-19
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.12-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.12-ga+1, mixed mode)

Features

• Provide aarch64 build

ZGC Features

• Remove ZThreadRootsIterator
• Transplant test case of zgc from master.

Update to 11.0.11-GA

openjdk version "11.0.11-ga" 2021-06-15
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.11-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.11-ga+1, mixed mode)

ZGC bug fix

• ZGC: Reduce mark stack usage
• ZGC: Steal local stacks instead of flushing them
• bug fix for class unloading

Update to 11.0.10-GA

openjdk version "11.0.10-ga" 2021-04-01
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.10-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.10-ga+1, mixed mode)

ZGC optimization

• FEAT(zgc): Concurrent Class Unloading，Reduce pause time by 50%
• FEAT(zgc): Redesign C2 load barrier，Improve ZGC stability

Update to 11.0.9.1-GA

openjdk version "11.0.9.1-ga" 2020-11-04
OpenJDK Runtime Environment TencentKonaJDK (build 11.0.9.1-ga+1)
OpenJDK 64-Bit Server VM TencentKonaJDK (build 11.0.9.1-ga+1, mixed mode)

G1 GC optimizations

• Backport of JEP 344: Abortable Mixed Collections for G1 GC
• More information in JEP 344

Print additional information in thread dump

• Using jstack or jcmd to do thread dump, get more information as below：
  • cpu = ...: the time the thread spent executing on the CPU
  • elapsed = ...: the wall clock time passed since the thread was started.
  • allocated=... : The number of bytes allocated by this thread.
  • defined_classes=... : The number of classes defined by this thread
• The values 'allocated=' and 'defined_classes=' are only printed if the VM is started with -XX:+PrintExtendedThreadInfo.
• If the thread dumps are gathered by jcmd, '-e' must be added to the Thread.print command.

ZGC is turned on for trial

-- use -XX:+UnlockExperimentalVMOptions -XX:+UseZGC to enable ZGC