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https://issues.apache.org/jira/browse/LOG4J2-3057?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17311741#comment-17311741
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Mykola Holovach commented on LOG4J2-3057:
-----------------------------------------
Along with i described earlier, when i run command netstat -t on the server
side, i received a lot of Active Internet connections with CLOSE_WAIT and
TIME_WAIT state, that's normal?
> TcpSocketServer over load CPU
> -----------------------------
>
> Key: LOG4J2-3057
> URL: https://issues.apache.org/jira/browse/LOG4J2-3057
> Project: Log4j 2
> Issue Type: Bug
> Components: Appenders
> Reporter: Mykola Holovach
> Priority: Major
>
> My server log4j2 xml configuration below
> {code:java}
> <Configuration xmlns="http://logging.apache.org/log4j/2.0/config";>
> <Appenders>
> <RollingRandomAccessFile name="ERROR_FILE" bufferSize="1024"
> bufferedIO="true" append="true"
> fileName="${LOGS_HOME}/logfinal-error-${HOST_NAME_SHORT}.log"
>
> filePattern="${LOGS_HOME}/logfinal-error-${HOST_NAME_SHORT}.log.%d{yyyy-MM-dd}">
> <ThresholdFilter level="warn" />
> <PatternLayout pattern="%d{DEFAULT} %-5p %t %c %X{application}
> %x - %m%n" />
> <Policies>
> <TimeBasedTriggeringPolicy interval="1"/>
> </Policies>
> </RollingRandomAccessFile> <RollingRandomAccessFile
> name="DEBUG_FILE" bufferSize="32768" bufferedIO="true" append="true"
> fileName="${LOGS_HOME}/logfinal-debug-${HOST_NAME_SHORT}.log"
>
> filePattern="${LOGS_HOME}/logfinal-debug-${HOST_NAME_SHORT}.log.%d{yyyy-MM-dd}">
> <ThresholdFilter level="debug" />
> <PatternLayout pattern="%d{DEFAULT} %-5p %t %c ${application}
> %x - %m%n" />
> <Policies>
> <TimeBasedTriggeringPolicy interval="1"/>
> </Policies>
> </RollingRandomAccessFile> <Async name="ASYNC" bufferSize="64">
> <AppenderRef ref="ERROR_FILE" />
> <AppenderRef ref="DEBUG_FILE" />
> </Async>
> </Appenders> <Loggers>
> <Logger name="ua" level="debug" />
> <Logger name="ua.cetelem.DossierAnalyser" level="info" />
> <Logger name="ua.cetelem.dbaccess.DbAccess" level="info" />
> <Logger name="com.usb" level="debug" />
> <Logger name="jacorb" level="info"/>
> <Logger name="org.owasp" level="trace"/>
> <Root level="info">
> <AppenderRef ref="ASYNC"/>
> </Root>
> </Loggers></Configuration>
> {code}
> My client side log4j2 xml configuration below
> {code:java}
> <Configuration xmlns="http://logging.apache.org/log4j/2.0/config";>
> <Appenders>
> <Socket name="logfinal" host="localhost" port="1101">
> <JSONLayout/>
> </Socket> <RollingFile name="ERROR_FILE"
>
> fileName="build/${sys:LOG4J_APP_NAME:-}-error-${HOST_NAME_SHORT}.log"
>
> filePattern="build/${sys:LOG4J_APP_NAME:-}-error-${HOST_NAME_SHORT}.log.%d{yyyy-MM-dd}">
> <ThresholdFilter level="warn" />
> <PatternLayout
> pattern="%d{DEFAULT} %-5p %t %c %x - %m%n" />
> <Policies>
> <TimeBasedTriggeringPolicy interval="1" />
> </Policies>
> </RollingFile> <RollingFile name="DEBUG_FILE"
>
> fileName="build/${sys:LOG4J_APP_NAME:-}-debug-${env:NAME_SHORT}.log"
>
> filePattern="build/${sys:LOG4J_APP_NAME:-}-debug-${env:NAME_SHORT}.log.%d{yyyy-MM-dd}">
> <ThresholdFilter level="debug" />
> <PatternLayout
> pattern="%d{DEFAULT} %-5p %t %c %x - %m%n" />
> <Policies>
> <TimeBasedTriggeringPolicy interval="1" />
> </Policies>
> </RollingFile>
>
> <Async name="ASYNC" bufferSize="64">
> <AppenderRef ref="ERROR_FILE" />
> <AppenderRef ref="DEBUG_FILE" />
> <AppenderRef ref="logfinal" />
> </Async>
>
> </Appenders> <Loggers>
> <Logger name="org.hibernate.tool.hbm2ddl" level="DEBUG" />
> <Logger name="org.hibernate.SQL" level="INFO" />
> <Logger name="ua.cetelem" level="debug" />
> <Root level="info">
> <Property name="application">app_name</Property>
> <AppenderRef ref="ASYNC" />
> </Root>
> </Loggers>
> </Configuration>
> {code}
> I need a help to resolve an issue with high load CPU on the logger server,
> with SocketAppender, what could be the problem and which could be options to
> resolve this problem?
>
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