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From "Robert Stupp (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (CASSANDRA-7316) Windows feature parity - lock JVM in memory to prevent swapping
Date Fri, 18 Jul 2014 14:25:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-7316?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14066395#comment-14066395
] 

Robert Stupp edited comment on CASSANDRA-7316 at 7/18/14 2:24 PM:
------------------------------------------------------------------

[~ala.alkhaldi] don't know if it helps, but did you try this : http://msdn.microsoft.com/en-us/library/ms190730.aspx
and this: {{-XX:LargePageSizeInBytes=...}} http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html

edit: VMMap tool (sysinternals) shows memory layout of a process - maybe it helps.


was (Author: snazy):
[~ala.alkhaldi] don't know if it helps, but did you try this : http://msdn.microsoft.com/en-us/library/ms190730.aspx
and this: {{-XX:LargePageSizeInBytes=...}} http://www.oracle.com/technetwork/java/javase/tech/vmoptions-jsp-140102.html


> Windows feature parity - lock JVM in memory to prevent swapping
> ---------------------------------------------------------------
>
>                 Key: CASSANDRA-7316
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-7316
>             Project: Cassandra
>          Issue Type: Improvement
>            Reporter: Joshua McKenzie
>            Assignee: Ala' Alkhaldi
>            Priority: Minor
>              Labels: Windows, perfomance
>             Fix For: 3.0
>
>
> Similar to mlockall() in CLibrary.java for linux, it would be nice to lock the virtual
address space on Windows to prevent page faults.
> One option: Reference API:  http://msdn.microsoft.com/en-us/library/windows/desktop/aa366895(v=vs.85).aspx



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