You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@ozone.apache.org by "Wei-Chiu Chuang (Jira)" <ji...@apache.org> on 2022/08/22 22:15:00 UTC
[jira] [Commented] (HDDS-7117) Consider reading chunk files using MappedByteBuffer
[ https://issues.apache.org/jira/browse/HDDS-7117?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17583228#comment-17583228 ]
Wei-Chiu Chuang commented on HDDS-7117:
---------------------------------------
this is the cpu profile after the change:
[^ozone_dn-rhel01.ozone.cisco.local.html]
> Consider reading chunk files using MappedByteBuffer
> ---------------------------------------------------
>
> Key: HDDS-7117
> URL: https://issues.apache.org/jira/browse/HDDS-7117
> Project: Apache Ozone
> Issue Type: Improvement
> Reporter: Wei-Chiu Chuang
> Assignee: Tsz-wo Sze
> Priority: Major
> Labels: pull-request-available
> Attachments: Screen Shot 2022-08-04 at 7.12.55 AM.png, ozone_dn-rhel01.ozone.cisco.local.html, ozone_dn-rhel03.ozone.cisco.local.html
>
>
> Running Impala TPC-DS which stresses Ozone DN read path.
> BufferUtils#assignByteBuffers stands out as one of the offender.
> We can experiment with MappedByteBuffer and see if it makes performance better.
--
This message was sent by Atlassian Jira
(v8.20.10#820010)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@ozone.apache.org
For additional commands, e-mail: issues-help@ozone.apache.org