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1. Java se runtime environment 8 update 281 download update#
2. Java se runtime environment 8 update 281 download code#

See Using Azul Zulu Prime JVM Command-Line Options for -XX:UseKestrelC2 and -XX:UseSeaOfNodesC2 command-line options and details. UseKestrelC2 generally exhibits a significantly lower compilation-time CPU consumption compared to Falcon.

Java se runtime environment 8 update 281 download code#

It is based on a lightweight use of the LLVM backend and typically produces faster code than UseSeaOfNodesC2 while keeping compilation effort at similar levels. KestrelC2 is a C2 implementation introduced to Azul Zulu Prime JVM in 2020. The default JIT compiler on Azul Zulu Prime JVM JDK 8 and JDK 7 is changed from SeaOfNodesC2 to KestrelC2 when the Azul Zulu Prime JVM C2 mode is enabled with -XX:+UseC2.įor Azul Zulu Prime JVM JDK 11, this improvement was made in Azul Zulu Prime JVM 20.04.0.0.

Java se runtime environment 8 update 281 download update#

Note that for Azul Zulu Prime JVM 8 and Azul Zulu Prime JVM 11 this support was introduced in Azul Zulu Prime JVM 21.01.0.0.Īzul Zulu Prime JVM 21.02.0.0 installation contains the following files related to the services:Īzul Zulu Prime JVM 21.01.0.0 brings the associated JDK 7, JDK 8, JDK 11, and JDK 13 versions to January 2021 Critical Patch Update (CPU) security update levels and incorporates changes related to OpenJDK 7u291, OpenJDK 8u281, OpenJDK 11.0.9.1.101, and OpenJDK 13.0.5.1.101 release contents. `criu libnet.so.1 libnl-3.so.200 libprotobuf-c.so.1 restore-script wait-scriptĪzul Zulu Prime JVM 21.02.0.0 includes optional experimental support for interaction with connected runtime services through an emerging protocol in Azul Zulu Prime JVM 13. However, Azul Zulu Prime JVM has emergency code cache flushing turned on by default, see UseEmergenc圜odeCacheFlushing in Using Azul Zulu Prime JVM Command-Line Options for details.Įarly-access support for ReadyNow! Image, an experimental warm-up optimizer based on ReadyNow! and Linux Checkpoint/Restore In Userspace (CRIU).Īzul Zulu Prime JVM 21.02.0.0 installation contains ReadyNow! Image files in the /etc/rni/ directory: The functionality of UseCodeCacheFlushing is offered under UseIncrementalCodeCacheFlushing in Azul Zulu Prime JVM 21.02.0.0. Improved object locking with better monitor inflation behavior. Azul Zulu Prime JVM also optimizes more such checks aggressively by considering both operands of the equality check. Load value barriers for reference equality checks are optimized within loops. See Azul Product Support Lifecycle for more information.Īdditional non-security changes associated with the January 2021 Patch Set Updates (PSU) OpenJDK 7u292, OpenJDK 8u282, OpenJDK 11.0.10, OpenJDK 13.0.6 and OpenJDK 15.0.2 release contents. Introduces medium-term support (MTS) for Java Standard Edition 15. If one of the following flags is set on the command line, the dynamic handling will also be disabled: To disable the dynamic handling, use the following on the command line: -XX:-UseDynamicNumberOfGCThreads As of this Prime version, the number of threads will never shrink later. The limit for the total number of GC threads is 3/4 of the process' available CPU threads. If later during application uptime the GC Time Percent metric increases beyond a threshold, more GC threads are added to reduce the number of GC cycles. At JVM start a low number of concurrent GC threads is employed. The number of concurrent GC threads is now changed dynamically when -Xms is set to the same value as -Xmx, or when Azul Zulu Prime System Tools (ZST) is installed. Helps reduce the peak duration for a new generation collection and reduce allocation delays during peak load. Increased parallelism between collectors for the new generation and old generation. The dynamic changes can be disabled by setting GPGCTargetPeakHeapOccupancyPercent to a desired value. The peak heap occupancy target, used by heuristics to decide when to trigger a garbage collection, is now managed dynamically by default. Azul Platform Prime 21.10.0.0 brings the associated JDK 7, JDK 8, JDK 11, JDK 13, and JDK 15 versions to October 2021 CPU security update levels. Profiling with Intel® VTune™ RecommendationsĪzul Platform Prime 21.10.0.0 contains the October 2021 CPU release of OpenJDK.Azul System Tools Libraries Retirement from Containers.Unified Garbage Collection Logging Recommendations.Azul Zulu Prime System Tools Installed Files.Memory Partitions and NUMA Configuration Options.Installing and Configuring Using Read-Only Images.Using Version 1.3 of Transport Layer Security (TLS) Protocol.