Subsecond Offset Visualizations: Unusual patterns from cloud computing (dtrace.org)

The method used to identify the zoneadmd freeze in Riak would be perfect for diagnosing x-runs in realtime audio applications. Here's hoping that awesome monitoring and visualization techniques developed for the cloud find their way into the hands of the jackd and ALSA developers.

What software is he using in the screenshots?

This reminds me of run-sequence and lag plots:

http://www.itl.nist.gov/div898/handbook/eda/section3/runseqp...

http://www.itl.nist.gov/div898/handbook/eda/section3/lagplot...

The field of Exploratory Data Analysis (EDA) is full of great techniques. See the root of the above guide.