JVM Performance Tricks Uncategorized

Tuning JVM Garbage Collector (Best values for JIRA 6 & 7 large instances)

The following example JVM settings are recommended for most production servers (JIRA works better as standalone installation): -server -Xms24G -Xmx24G -XX:PermSize=512m -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:ParallelGCThreads=20 -XX:ConcGCThreads=5 -XX:InitiatingHeapOccupancyPercent=70 For production replica servers (test environments), use the example settings: -server -Xms4G -Xmx4G -XX:PermSize=512m -XX:+UseG1GC -XX:MaxGCPauseMillis=200 -XX:ParallelGCThreads=20 -XX:ConcGCThreads=5 -XX:InitiatingHeapOccupancyPercent=70 For standalone installations (recommended in JIRA large installations), use the…

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JVM Uncategorized

Best JVM for JIRA: G1 vs CMS vs Parallel GC

This post is following up the experiment we ran exactly a year ago comparing the performance of different GC algorithms in real-life settings. We took the same experiment, expanded the tests to contain the G1 garbage collector and ran the tests on different platform. This year our tests were run with the following Garbage Collectors:…

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