While we're on the topic, can anyone share the tools and methods they use to visualize GC in their live environments? Back when I worked at a Scala shop I spent an incredible amount of time in the VisualGC plugin tab of VisualVM. This was fairly onerous because its a fully seperate java app connecting to a jmx port on each jvm you want to look at. It also required setting the refresh rate to 100ms to be able to see the consumption patters clearly in the graphs, which in turn required a fairly low latency and stable network connection to not be riddled with false-positives (meaning, our mac-mini driven tv's with wifi connections).

Does anyone have a better tooling story to share? (on any lang/runtime). I found that things like datadog and newrelic were completely useless because their time-resolution completely obscured the underlying behavior pattern. Like trying to measure the tide with one datapoint a day.