如何停止log4net写入两个单独的文件

我正在使用下面的log4net配置。我正在尝试将性能日志写入一个单独的文件，但输出将转到两个文件。即使我指定：如何停止log4net写入两个单独的文件

private static readonly log4net.ILog log = log4net.LogManager.GetLogger("PerformanceMetricsLogger");

在这种情况下，如何阻止log4net写入默认appender？

<log4net> 
    <!-- Define some output appenders --> 
    <appender name="RollingFileAppender" type="log4net.Appender.RollingFileAppender">  
    <file type="log4net.Util.PatternString" value="c:\ilap\IlapAdServerLog_%property{log4net:HostName}.txt" /> 
    <appendToFile value="true" /> 
    <rollingStyle value="Size" /> 
    <maxSizeRollBackups value="-1" /> 
    <maximumFileSize value="2000KB" /> 
    <staticLogFileName value="true" /> 
    <layout type="log4net.Layout.PatternLayout"> 
     <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> 
    </layout> 
    </appender> 

    <appender name="RollingFileAppenderForPerformance" type="log4net.Appender.RollingFileAppender"> 
    <file type="log4net.Util.PatternString" value="c:\ilap\IlapAdServerLog_%property{log4net:HostName}.peformance.log" /> 
    <appendToFile value="true" /> 
    <rollingStyle value="Size" /> 
    <maxSizeRollBackups value="-1" /> 
    <maximumFileSize value="2000KB" /> 
    <staticLogFileName value="true" /> 
    <layout type="log4net.Layout.PatternLayout"> 
     <conversionPattern value="%date [%thread] %-5level %logger [%property{NDC}] - %message%newline" /> 
    </layout> 
    </appender> 

    <!-- Setup the root category, add the appenders and set the default level --> 
    <root> 
    <level value="DEBUG" /> 
    <appender-ref ref="RollingFileAppender" /> 
    </root> 

    <logger name="PerformanceMetricsLogger"> 
    <level value="DEBUG" /> 
    <appender-ref ref="RollingFileAppenderForPerformance" /> 
    </logger> 
</log4net>

来源

2010-08-26 jbenckert

根以下的所有记录器级别从根记录器继承appender。这就是为什么你的消息记录了两次。要禁用记录器的继承，请将其参数additivity设置为false：

<logger additivity="false" name="PerformanceMetricsLogger"> 
    <level value="DEBUG" /> 
    <appender-ref ref="RollingFileAppenderForPerformance" /> 
    </logger>

来源

2010-08-26 20:27:27 jdecuyper

如何停止log4net写入两个单独的文件

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