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https://issues.apache.org/jira/browse/IGNITE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15814243#comment-15814243
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Vyacheslav Daradur edited comment on IGNITE-4374 at 1/10/17 8:03 AM:
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[^x32_not_optimized.png]
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'-server' option checks only on not x64 VM
bq. On a 64-bit capable JDK, only the Java Hotspot Server VM is supported so
the -server option is implicit
http://docs.oracle.com/javase/7/docs/technotes/guides/vm/server-class.html
was (Author: daradurvs):
x64 - not optimized
[^x64_not_optimized.png]
x64 - optimized
!x64_optimized.png|thumbnail!
x32 - not optimized
!x32_not_optimized.png|thumbnail!
x32 - optimized
!x32_optimized.png|thumbnail!
'-server' option checks only on not x64 VM
bq. On a 64-bit capable JDK, only the Java Hotspot Server VM is supported so
the -server option is implicit
http://docs.oracle.com/javase/7/docs/technotes/guides/vm/server-class.html
> Ignite should validate JVM and OS configuration and output warning in log
> -------------------------------------------------------------------------
>
> Key: IGNITE-4374
> URL: https://issues.apache.org/jira/browse/IGNITE-4374
> Project: Ignite
> Issue Type: Improvement
> Components: documentation
> Reporter: Yakov Zhdanov
> Assignee: Vyacheslav Daradur
> Attachments: check-output.png, x32_not_optimazed.png,
> x32_optimazed.png, x64_not_optimized.png, x64_optimized.png
>
>
> Currently we have GridPerformanceSuggestions that output suggestions to logs
> on Ignite start on how Ignite can be improved.
> I suggest to go a little bit deeper and validate more configuration options
> and add validation for JVM and OS settings.
> Ignite should output warning if:
> * GC logging is not enabled
> * MaxDirectMemorySize is not set (-XX:MaxDirectMemorySize)
> * Heap size is greater than 30,5G and JVM cannot use compressed oops
> * Any of the recommended OS setting described here
> https://apacheignite.readme.io/docs/jvm-and-system-tuning are not properly
> set
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