Picollo: Modern HDR histogram and PMU counters for .NET(hotforknowledge.com)
hotforknowledge.com
Picollo: Modern HDR histogram and PMU counters for .NET
https://hotforknowledge.com/2026/05/15/introducing-picollo/
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Picollo is a new library for serious performance work in .NET. Picollo stands for Performance Instrumentation and Continuous Observation for Low-Level Optimization. The initial public release of Picollo v0.1.0 contains two components. First, a modern version of an HDR histogram, which is much faster for recording data and easier to use. Second, a set of APIs for `perf_event_open`, including fast-path reads, that give raw access to PMU counters from .NET on Linux, WSL included.