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https://issues.apache.org/jira/browse/ARTEMIS-1807?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16439720#comment-16439720
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ASF GitHub Bot commented on ARTEMIS-1807:
-----------------------------------------
Github user franz1981 commented on the issue:
https://github.com/apache/activemq-artemis/pull/2015
@michaelandrepearce Good points: paging (the consuming side) , this PR and
a mapped journal should contend the OS page cache , so it depends on the
dirty/dirty background ratio and total system memory.
Probably should makes sense to allow this feature to be configurable (and
paging as well) in order to avoid contention between them or just tune the OS
according (tricky IMO). Wdyt?
> File-based Large Message encoding should use read-only mmap
> -----------------------------------------------------------
>
> Key: ARTEMIS-1807
> URL: https://issues.apache.org/jira/browse/ARTEMIS-1807
> Project: ActiveMQ Artemis
> Issue Type: Improvement
> Components: Broker
> Affects Versions: 2.5.0
> Reporter: Francesco Nigro
> Assignee: Francesco Nigro
> Priority: Major
>
> File-based LargeServerMessageImpl should use read-only memory mapping while
> reading the file, in order to:
> * reduce the number of copies
> * reduce the context switches
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