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25 строки
1.1 KiB
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25 строки
1.1 KiB
Plaintext
http://www.oracle.com/technetwork/articles/java/vmoptions-jsp-140102.html
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To bypass the file system type check, set the -XX:+PerfBypassFileSystemCheck option on the java command line for both the
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applications you want to monitor and for the jvmstat tools. Setting this option for target applications is application
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specific. For the jvmstat tools, the following environment variable can be set before running any of the commands:
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set VMARGS=-XX:+PerfBypassFileSystemCheck
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_JAVA_LAUNCHER_DEBUG
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javac options:
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javac -Xpring classname
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memory
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-XX:CompressedClassSpaceSize=160m
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by default is 1GB.
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-XX:MaxRAMPercentage"
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for java 10, but we still need to know this percentage
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-XX:UseCGroupMemoryLimitForHeap
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It'll tell JVM to calculate how much memory it could use for heap based on memory available to Docker container,
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so you don't need to guess heap size.
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for-containers
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https://blog.gceasy.io/2020/11/05/best-practices-java-memory-arguments-for-containers/
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https://www.reddit.com/r/Kotlin/comments/kuedd9/best_practices_jvm_memory_arguments_for_containers/
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