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https://issues.apache.org/jira/browse/IGNITE-6341?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16330305#comment-16330305
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Dmitriy Pavlov edited comment on IGNITE-6341 at 1/18/18 9:50 AM:
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Ignite Direct IO plugin will be added to optional lib automatically to
Apache-ignite-fabric-2.x.x-bin\libs\optional\ignite-direct-io\direct-io-2.x.x.jar
To enable Direct IO it is sufficient to place lib to ignite classpath on Linux
system.
When plugin is applied following messages will be produced
{noformat}
Configured plugins:
^-- Ignite Native I/O Plugin [Direct I/O]
^-- Copyright(C) Apache Software Foundation
{noformat}
Following message will be produced for successful setup:
{noformat}
Page size configuration for storage path
[/data/teamcity/tmpfs/work/db/node00-3a1415b8-aa54-4a63-a40a-c75ad48dd6b8]:
4096; Linux memory page size: 4096; Selected FS block size : 4096.
Selected FS block size : 4096
Direct IO is enabled for block IO operations on aligned memory structures.
[block size = 4096, durable memory page size = 4096]
{noformat}
Following test suites were added for checking Direct IO functionality using
existing PDS tests:
[IgnitePds1DirectIo|https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_IgnitePds1DirectIo]
[IgnitePds2DirectIo|https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_IgnitePds2DirectIo]
Runs may be triggered by
[RunAllPds|https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_RunAllPds]
Example of run of PR code:
[https://ci.ignite.apache.org/viewLog.html?buildId=1044741]
[~agoncharuk], could you please review and merge changes from PR
[https://github.com/apache/ignite/pull/3226] ?
was (Author: dpavlov):
Ignite Direct IO plugin will be added to optional lib automatically to
Apache-ignite-fabric-2.x.x-bin\libs\optional\ignite-direct-io\direct-io-2.x.x.jar
To enable Direct IO it is sufficient to place lib to ignite classpath on Linux
system.
When plugin is applied following messages will be produced
{noformat}
Configured plugins:
^-- Ignite Native I/O Plugin [Direct I/O]
^-- Copyright(C) Apache Software Foundation{noformat}
Following message will be produced for successful setup:
{noformat}
Page size configuration for storage path
[/data/teamcity/tmpfs/work/db/node00-3a1415b8-aa54-4a63-a40a-c75ad48dd6b8]:
4096; Linux memory page size: 4096; Selected FS block size : 4096.
Selected FS block size : 4096
Direct IO is enabled for block IO operations on aligned memory structures.
[block size = 4096, durable memory page size = 4096]{noformat}
Following test suites were added for checking Direct IO functionality using
existing PDS tests:
[https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_IgnitePds1DirectIo]
[https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_IgnitePds2DirectIo]
Runs may be triggered by
[https://ci.ignite.apache.org/viewType.html?buildTypeId=IgniteTests24Java8_RunAllPds]
Example of run of PR code:
[https://ci.ignite.apache.org/viewLog.html?buildId=1044741]
[~agoncharuk], could you please review and merge changes from PR
[https://github.com/apache/ignite/pull/3226] ?
> Use direct IO or libaio for file page store 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
> Priority: Major
> Fix For: 2.4
>
>
> Need try to use direct IO or libaio for page store 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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