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https://issues.apache.org/jira/browse/IGNITE-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265402#comment-16265402
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Alexey Goncharuk commented on IGNITE-6341:
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Using direct IO for page store removes double memory overhead for pages in
memory.
> Use direct IO or libaio for file page store and WAL where applicable
> --------------------------------------------------------------------
>
> Key: IGNITE-6341
> URL: https://issues.apache.org/jira/browse/IGNITE-6341
> Project: Ignite
> Issue Type: Improvement
> Components: persistence
> Reporter: Andrey Gura
> Assignee: Andrey Gura
>
> Need try to use direct IO or libaio for WAL writer thread because once data
> buffer is serialized, we can write it as disk pages (this will also make it
> easier if we decide to open file as a block device).
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