[jira] [Resolved] (JENA-1832) Increase default JVM heap setting.

["Andy Seaborne (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/JENA-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andy Seaborne resolved JENA-1832.
---------------------------------
    Resolution: Done

> Increase default JVM heap setting.
> ----------------------------------
>
>                 Key: JENA-1832
>                 URL: https://issues.apache.org/jira/browse/JENA-1832
>             Project: Apache Jena
>          Issue Type: Improvement
>          Components: Fuseki
>    Affects Versions: Jena 3.14.0
>            Reporter: Andy Seaborne
>            Assignee: Andy Seaborne
>            Priority: Major
>             Fix For: Jena 3.15.0
>
>          Time Spent: 20m
>  Remaining Estimate: 0h
>
> The script default is {{-Xmx1200M}} which is quite small these days (we can ignore 32-bit setups in choosing defaults).
> We could simply leave it to the JVM default (25% of RAM).
> Considerations:
> * we don't want to squeeze out memory mapped files.
> * 25% is a lot on larger servers if shared.
> For TDB1/TDB2, a key use of memory in heap is the node table cache.
> Other than that, it is intermediate query processing space.



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