dan norwood created KAFKA-7713:
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Summary: producer io-wait-ratio > 1
Key: KAFKA-7713
URL: https://issues.apache.org/jira/browse/KAFKA-7713
Project: Kafka
Issue Type: Bug
Affects Versions: 2.1.0
Reporter: dan norwood
i am running a test on a streams application and gathering jmx measurements to
determine what is causing some lag. using `kafka.tools.JmxTool` i was gathering
the following attributes `'io-ratio', 'io-wait-ratio', 'select-rate',
'batch-size-avg', 'compression-rate-avg', 'record-size-avg',
'records-per-request-avg'` on my streams instances producers. i noticed that i
was getting `io-wait-ratio > 1`, but according to docs it is "The fraction of
time the I/O thread spent waiting."
some example lines from jmxtool
|StreamThread-8-producer:batch-size-avg|StreamThread-8-producer:compression-rate-avg|StreamThread-8-producer:io-ratio|*StreamThread-8-producer:io-wait-ratio*|StreamThread-8-producer:record-size-avg|StreamThread-8-producer:records-per-request-avg|StreamThread-8-producer:select-rate|
|662.2613636|0.3425814926|1.01E-04|*1.178371974*|172.2045455|38.71666667|3.855527588|
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