PyLatencyMap
PyLatencyMap is a terminal-based visualizer for latency histograms, built to make performance tuning and troubleshooting faster.
It renders two scrolling heat maps—Frequency (events/sec) and Intensity (time waited per sec)—so you can see how latency distributions evolve over time at a glance.
- Works from the command line. Reads plain-text histogram records from
stdin. - Plays nicely with common sources: Oracle wait-event histograms, eBPF/BCC tools, DTrace, SystemTap, and pre-recorded trace files.
- Great for multimodal latency. Highlights mixtures of fast/slow operations that averages hide.
Version 1.3 (September 2025): minor refactoring and refreshed testing against current dependencies, including recent Oracle releases, BPF/BCC, SystemTap, and DTrace.