[jira] [Issue Comment Deleted] (IGNITE-4374) Ignite should validate JVM and OS configuration and output warning in log

["Vyacheslav Daradur (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/IGNITE-4374?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Vyacheslav Daradur updated IGNITE-4374:
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    Comment: was deleted

(was: [^x64_not_optimized.png]
[^x64_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)

> 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: x32_not_optimized.png, x32_optimized.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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