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java -server -Xms3072m -Xmx3072m -XX:NewSize=256m -XX:MaxNewSize=256m -XX:+UseConcMarkSweepGC -XX:CMSInitiatingOccupancyFraction=70
     -XX:+PrintGCDetails -XX:+PrintGCDateStamps -XX:+PrintTenuringDistribution -Xloggc:logs/gc.log -Djava.awt.headless=true
     -Dcom.sun.management.jmxremote -classpath <long list of jars>

Kafka Configuration
The most important configurations are those that control the disk flush rate. The more often data is flushed to disk, the more "seek-bound" Kafka will be and the lower the throughput. However we don't hand out data until is is sync'd to disk, so delaying flush also adds some latency. The flush behavior can be set by either giving a timeout (flush at most every 30 seconds, say) or a number of messages (flush every 1000 messages). This can be overridden at the topic level, if desired. The setting always applies to each partition.

Here is our configuration:
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Monitoring

We monitor the following things:

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