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https://issues.apache.org/jira/browse/ARTEMIS-2849?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17159858#comment-17159858
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Gary Tully commented on ARTEMIS-2849:
-------------------------------------
verify on recovery, if reading zeros is part of EOF determination (ie: not
depending on the size attribute of a file). I suspect the zeroing of the buffer
is ensuring that no cruft exists after the last record. Just a thought!
> Eliminate zeroing of buffers while writing the journal
> ------------------------------------------------------
>
> Key: ARTEMIS-2849
> URL: https://issues.apache.org/jira/browse/ARTEMIS-2849
> Project: ActiveMQ Artemis
> Issue Type: Test
> Components: Broker
> Reporter: Francesco Nigro
> Priority: Major
>
> By default ASYNCIO, NIO and MAPPED journal while using TimedBuffer are
> zeroing the ByteBuffers used to perform the write on the journal: under load
> TimedBuffer can be big enough that zeroing would cost the same as copying the
> actual content into it, hence saving the zeroing is quite beneficial to save
> CPU time and increase IOPS.
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