gistfile1.txt

<?xml version="1.0" encoding="UTF-8"?>
<configuration>

	<appender name="CONSOLE" class="ch.qos.logback.core.ConsoleAppender">
    <encoder>
      <pattern>%d{HH:mm:ss.SSS} [%-5level] %logger{15} - %msg%n%rEx</pattern>
    </encoder> 
    <immediateFlush>false</immediateFlush>
	</appender>

	<logger name="io.gatling.http.ahc" level="TRACE" />
        <logger name="io.gatling.http.response" level="TRACE" />

	<root level="WARN">
		<appender-ref ref="CONSOLE" />
	</root>

</configuration>