![]() ![]() ![]() See Printing JVM Information in the Enterprise Performance Pack User's Guide for more details. ![]() This provides line-at-a-time, human readable log messages enabled at the command line through the -Xlog flag. See Enterprise Performance Pack documentation for more information about JVM options and Enterprise Performance Pack configuration.Įnterprise Performance Pack supports a common logging system for all components of the JVM. The tuning options for ZGC in the presence of observing allocation stalls are: increasing the max Java heap size (-Xmx), or setting -XX:SoftMaxHeapSize to a value less than -Xmx, or increasing the number of concurrent GC threads and disabling dynamic GC threads (-XX:ConcGCThreads=n -XX:-UseDynamicGCThreads), or some combination of those three. This greatly limits the negative impact that garbage collection has on application response times.Īpplications moving from Parallel GC, CMS GC, or G1 GC to ZGC might observe higher CPU utilization and might require an increase in Java heap space. At its core, ZGC is a concurrent garbage collector, meaning that all heavy lifting work (marking, compaction, reference processing, string table cleaning, etc) is done while Java threads continue to execute. The Z Garbage Collector, also known as ZGC, is a scalable low latency garbage collector ( JEP 333). In some cases, the descriptions provide links to additional detailed information about an issue or a change.Įnterprise Performance Pack supports the latest garbage collector, ZGC. This section describes Enterprise Performance Pack features and important information. For more information, refer to Timezone Data Versions in the JRE Software. The Enterprise Performance Pack contains IANA time zone data version 2022a. ![]() The full version string for this update release is 1.8.0_345-perf-97-b06 (where "b" means "build").
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