CODEWITHSUNDEEP
logginglogbackasyncappender
machinarium
machinarium

Reputation: 681

logback AsyncAppender have performance issues intermittently

I am using logback AsyncAppender currently and it does reduce logging latency largely. However, I still spot some large latency intermittently. Check below two consecutive logging, the latency is 488ms which is unexplained

2023-04-24 05:42:05.446 [SofaBizProcessor-5-thread-4]   INFO[06023f5c168234012297211431566]search (rule,keyword) mappings with key: isContainerLink
2023-04-24 05:42:05.934 [SofaBizProcessor-5-thread-4]   WARN[06023f5c168234012297211431566]no (rule,keyword) mapping are present, try to match directly with key: isContainerLink

My logback configuration is


    <!-- neverBlock true means possible loss of logging events in case of full queue -->
    <appender name="ASYNC_MODULE_APPENDER" class="ch.qos.logback.classic.AsyncAppender">
        <appender-ref ref="MODULE_APPENDER" />
        <queueSize>1024</queueSize>
        <discardingThreshold>0</discardingThreshold>
        <neverBlock>true</neverBlock>
    </appender>

I am expecting no latency/blocking at all since I specify neverBlock=true

Any ideas?

Upvotes: 0

Views: 397

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