log4j-core/src/test/resources/perf5AsyncApndNoLoc.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration status="OFF">
  <Appenders>
    <RandomAccessFile name="RandomAccessFile" fileName="perftest.log" immediateFlush="false" append="false">
      <PatternLayout>
        <Pattern>%d %p %c{1.} [%t] %X{aKey} %m %ex%n</Pattern>
      </PatternLayout>
    </RandomAccessFile>
    <Async name="Async"  blocking="true" bufferSize="262144">
      <appender-ref ref="RandomAccessFile"/>
    </Async>
  </Appenders>  
  <Loggers>
    <Root level="info" includeLocation="false">
      <appender-ref ref="Async"/>
    </Root>
  </Loggers>
</Configuration>