Colony Graphs: Process Execution
In Visualizing Process Snapshots I showed processes and their parent-child hierarchy over time, using snapshots of process information. This approach misses short-lived processes that occur between the snapshots. Here I'll fill in the gaps using system tracing, visualizing all processes that occurred. Snapshots vs Tracing 1 second snapshots (eg, top) tracing (eg,
Utilization Heat Maps
Device utilization is a key metric for performance analysis and capacity planning. On this page I'll illustrate different ways to visualize device utilization across multiple devices, and how that utilization is changing over time. As a system to study, I'll examine a production cloud environment that contains over 5,000 virtual CPUs (over 600 physical processors). I'll show how well different vis
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