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https://issues.apache.org/jira/browse/AMQ-6377?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15899416#comment-15899416
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Christopher L. Shannon commented on AMQ-6377:
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Added a separate Jira to track the journal disk sync strategy change:
https://issues.apache.org/jira/browse/AMQ-6619
> Introduce a periodic disk sync mode for KahaDB journal
> ------------------------------------------------------
>
> Key: AMQ-6377
> URL: https://issues.apache.org/jira/browse/AMQ-6377
> Project: ActiveMQ
> Issue Type: New Feature
> Components: Broker, KahaDB
> Affects Versions: 5.13.4
> Reporter: Christopher L. Shannon
> Assignee: Christopher L. Shannon
> Fix For: 5.14.0
>
>
> KahaDB has two modes for journal disk syncs, either always sync for each
> write or never sync. I'm proposing that we add a third option, a period disk
> sync.
> The intended behavior of this would be to run a task in the file appender
> that would sync the file (if necessary) at some periodic interval (such as
> every 500 ms, or 1 second, etc) instead of every write. The file would also
> be synced on close (on file rollover or shutdown)
> In my testing, syncing every 1 second has been proven to be nearly
> indistinguishable performance as never disk syncing but is a safer option as
> you insure that a sync is performed at least once per interval.
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