[teiid-issues] [JBoss JIRA] Updated: (TEIID-81) Cached plans are too big - can cause out of memory errors

[Ramesh Reddy (JIRA)]

     [ https://jira.jboss.org/jira/browse/TEIID-81?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Ramesh Reddy updated TEIID-81:
------------------------------

          Component/s: Query Engine
        Fix Version/s: 6.x
    Affects Version/s: 6.x


> Cached plans are too big - can cause out of memory errors
> ---------------------------------------------------------
>
>                 Key: TEIID-81
>                 URL: https://jira.jboss.org/jira/browse/TEIID-81
>             Project: Teiid
>          Issue Type: Bug
>          Components: Query Engine
>    Affects Versions: 6.x
>            Reporter: Steven Hawkins
>             Fix For: 6.x
>
>
> Defect Tracker #12381: Running the coper load tests led to this conclusion:
> Each cached plan takes on average 31 KB of memory.
> At 140 unique queries / connection and 128 connection this requires over 550 MB of memory just for the plan cache.
> Half of the memory was consumed by char[].  Over 10% of the memory was used by ElementSymbol objects.

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