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https://issues.apache.org/jira/browse/HDDS-10890?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Doroszlai resolved HDDS-10890.
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Fix Version/s: 1.5.0
Resolution: Done
> [hsync] Increase default value for
> hdds.container.ratis.log.appender.queue.num-elements
> ---------------------------------------------------------------------------------------
>
> Key: HDDS-10890
> URL: https://issues.apache.org/jira/browse/HDDS-10890
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Major
> Labels: pull-request-available
> Fix For: 1.5.0
>
>
> hdds.container.ratis.log.appender.queue.num-elements default value is 1. This
> is the bottleneck at DN Ratis.
> With the default value, I got about 2500 requests per second using freon dn
> echo tool.
> Increasing it to 32, I managed to 5500 requests per second,
> This is still lower than OM echo on the same machine (~16k requests per
> second), so I'll keep looking for other efficiencies.
> NOTE: this Ozone configuration is associated with Ratis property
> raft.server.log.appender.buffer.element-limit. The default value for Ozone
> Manager Ratis is 1024 (defined by
> ozone.om.ratis.log.appender.queue.num-elements)
> {noformat}
> <property>
> <name>hdds.container.ratis.log.appender.queue.num-elements
> </name>
> <value>1</value>
> <tag>OZONE, DEBUG, CONTAINER, RATIS</tag>
> <description>Limit for number of append entries in ratis leader's
> log appender queue.
> </description>
> </property>
> {noformat}
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