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Posted to issues@ignite.apache.org by "Alexey Goncharuk (JIRA)" <ji...@apache.org> on 2017/11/24 16:25:00 UTC

[jira] [Commented] (IGNITE-6341) Use direct IO or libaio for file page store and WAL where applicable

    [ https://issues.apache.org/jira/browse/IGNITE-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16265402#comment-16265402 ] 

Alexey Goncharuk commented on IGNITE-6341:
------------------------------------------

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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