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

["ASF subversion and git services (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/JENA-1832?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17026183#comment-17026183 ] 

ASF subversion and git services commented on JENA-1832:
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Commit 9c8bb061c5f2c0dacad0b7d8a3ed7a112bab4a4a in jena's branch refs/heads/master from Andy Seaborne
[ https://gitbox.apache.org/repos/asf?p=jena.git;h=9c8bb06 ]

Merge pull request #683 from afs/jena1832-fuseki-heap

JENA-1832: Default max heap size setting

> 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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