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

[ASF GitHub Bot (JIRA)]

[ 
https://issues.apache.org/jira/browse/IGNITE-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel=16290678#comment-16290678
 ] 

ASF GitHub Bot commented on IGNITE-6341:


GitHub user dspavlov opened a pull request:

https://github.com/apache/ignite/pull/3226

IGNITE-6341: Direct IO implemented for file page store



You can merge this pull request into a Git repository by running:

$ git pull https://github.com/gridgain/apache-ignite ignite-6341-1

Alternatively you can review and apply these changes as the patch at:

https://github.com/apache/ignite/pull/3226.patch

To close this pull request, make a commit to your master/trunk branch
with (at least) the following in the commit message:

This closes #3226


commit 8a33567f3e63e8e71becdb89496effa010a48c24
Author: dpavlov 
Date:   2017-12-14T10:22:09Z

IGNITE-6341: Direct IO implemented for file page store




> 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: Dmitriy Pavlov
> Fix For: 2.4
>
>
> 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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[jira] [Commented] (IGNITE-6341) Use direct IO or libaio for file page store and WAL where applicable

[Alexey Goncharuk (JIRA)]

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