Sorry for the bit about sarcasm, I was just really confused by some things, and said something silly and obnoxious.<p><i>The native GC logging is way better than using log4j (which is great for logging, but abymsal in situations like this for obvious reasons...)</i><p>He&#x27;s using the native GC logging. The log4j clone is application level logging, which is what originally confused me.<p>I see you&#x27;re worried about variance, but I&#x27;m not sure a super synthetic benchmark is better. With GC measurement, you&#x27;re concerned about how an actual application produces garbage--unlike writing a controlled benchmark with JMH. I&#x27;d rather see an actual Dropwizard app&#x2F;servlet hit with JMeter or something like that, and enough runs to smooth the variance--the opposite of tearing out the logging.<p><i>he would have used Dtrace and probed a few application runs with appropriately placed probes.</i><p>Still confused by this. Hotspot does GC logging. How do you propose he improve on that with DTrace?