logback性能调优测试

1. RollingFileAppender

配置：

<appender name="localFile"
class="ch.qos.logback.core.rolling.RollingFileAppender">
<encoder>
            <ImmediateFlush>false</ImmediateFlush>
<pattern>%d{yyyy-MM-dd HH:mm:ss.SSS} [%thread] %-5level %logger{32}%L - %msg %n</pattern>
</encoder>
<file>${LOG_HOME}/fileLog.log</file>
<rollingPolicy class="ch.qos.logback.core.rolling.TimeBasedRollingPolicy">
<fileNamePattern>${LOG_HOME}/fileLog_%d{yyyyMMddHH}_%i.log.zip
</fileNamePattern>
<timeBasedFileNamingAndTriggeringPolicy
class="ch.qos.logback.core.rolling.SizeAndTimeBasedFNATP">
<maxFileSize>10MB</maxFileSize>
</timeBasedFileNamingAndTriggeringPolicy>
</rollingPolicy>
</appender>

测试30s左右，去掉ImmediateFlush， 37s左右

2. 采用异步输出

配置：

  <appender name ="asyncFile" class= "ch.qos.logback.classic.AsyncAppender">
        <!-- 不丢失日志.默认的,如果队列的80%已满,则会丢弃TRACT、DEBUG、INFO级别的日志 -->
        <discardingThreshold >0</discardingThreshold>
        <!-- 更改默认的队列的深度,该值会影响性能.默认值为256 -->
        <queueSize>2048</queueSize>
         <includeCallerData>true</includeCallerData>
        <!-- 添加附加的appender,最多只能添加一个 -->
        <appender-ref ref ="localFile"/>
    </appender>

includeCallerData = true: 27s左右

includeCallerData = false: 22s左右

3. 现网测试

不开启Logback, TPS: 3100左右；

未添加includeCallerData=true和ImmediateFlush=false时， TPS只能到500左右，

添加这两个配置后,TPS能到2900左右