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https://issues.apache.org/jira/browse/HDDS-11224?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Wei-Chiu Chuang resolved HDDS-11224.
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Resolution: Fixed
> Increase hdds.datanode.handler.count
> ------------------------------------
>
> Key: HDDS-11224
> URL: https://issues.apache.org/jira/browse/HDDS-11224
> Project: Apache Ozone
> Issue Type: Sub-task
> Reporter: Wei-Chiu Chuang
> Assignee: Wei-Chiu Chuang
> Priority: Major
> Labels: pull-request-available
>
> hdds.datanode.handler.count is default to 1. Increasing to 10 improves DN
> Echo throughput
> {noformat}
> ozone freon dne --clients=32 -t 32 -n 1000000 --sleep-time-ms=0 --ratis
> --payload-req=0 --container-id=1 {noformat}
> before:
> {noformat}
> count = 555484
> mean rate = 10309.69 calls/second
> 1-minute rate = 9451.50 calls/second
> 5-minute rate = 8537.91 calls/second
> 15-minute rate = 8327.00 calls/second
> min = 1.29 milliseconds
> max = 34.97 milliseconds
> mean = 3.00 milliseconds
> stddev = 1.06 milliseconds
> median = 2.85 milliseconds
> 75% <= 3.19 milliseconds
> 95% <= 4.04 milliseconds
> 98% <= 4.38 milliseconds
> 99% <= 4.82 milliseconds
> 99.9% <= 11.82 milliseconds
> {noformat}
> after setting hdds.datanode.handler.count to 10:
> {noformat}
> count = 1000000
> mean rate = 20817.03 calls/second
> 1-minute rate = 18431.88 calls/second
> 5-minute rate = 16256.12 calls/second
> 15-minute rate = 15770.61 calls/second
> min = 0.56 milliseconds
> max = 9.36 milliseconds
> mean = 1.50 milliseconds
> stddev = 0.60 milliseconds
> median = 1.38 milliseconds
> 75% <= 1.69 milliseconds
> 95% <= 2.47 milliseconds
> 98% <= 2.82 milliseconds
> 99% <= 3.23 milliseconds
> 99.9% <= 7.58 milliseconds
> {noformat}
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