Minecraft server logging configuration file for Minecraft 1.7.2+

log4j2.xml

<?xml version="1.0" encoding="UTF-8"?>
<Configuration>
	<Appenders>
		<File name="legacy_server_log" fileName="server.log">
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%level] %msg%n" />
		</File>

		<Console name="console" target="SYSTEM_OUT">
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%level] %msg%n" />
		</Console>

		<RollingFile name="rolling_server_log" fileName="logs/server.log"
				filePattern="logs/server_%d{yyyy-MM-dd}.log">
			<PatternLayout pattern="%d{yyyy-MM-dd HH:mm:ss} [%level] %msg%n" />
			<Policies>
				<TimeBasedTriggeringPolicy />
			</Policies>
		</RollingFile>
	</Appenders>
	<Loggers>
		<Root level="info">
<!--			<AppenderRef ref="rolling_server_log" /> -->
			<AppenderRef ref="legacy_server_log" />
			<AppenderRef ref="console" />
		</Root>
	</Loggers>
</Configuration>

I love my logs to be at one place, but it turns out, adding that option "-Dlog4j.configurationFile=log4j2.xml" makes my server eat 100%+ CPU time on empty and idle server. Do you have any idea why?
Its on Linux laptop 3.12.2-1-ARCH x86_64 GNU/Linux
and also on
Linux Ubuntu 2.6.35-22-server x86_64 x86_64 x86_64 GNU/Linux

Best regards

EDIT:
Well, https://gist.github.com/EvilSeph/7909975 works fine for me. Maybe I edited badly your xml, maybe not.

Thank you for this! I've been looking for a way to control Forge logging for some time.

sooo confused xD