https://hotforknowledge.com/tags/pmu/ Recent content in PMU on Hot For Knowledge Hugo -- gohugo.io en-us Victor Baybekov Fri, 15 May 2026 00:00:00 +0000 https://hotforknowledge.com/2026/05/15/introducing-picollo/ Fri, 15 May 2026 00:00:00 +0000 https://hotforknowledge.com/2026/05/15/introducing-picollo/ <div style="overflow:auto; margin:0;"> <a href="https://github.com/picollodev/Picollo" target="_blank"> <img title="Picollo logo: A woodpecker with its crest resembling a mountain peak, with its eyes and peck resembling `ollo`. In French, the word pic stands both for a woodpecker and a peak." src="https://hotforknowledge.com/2026/05/15/introducing-picollo/Picollo.png" alt="Picollo" style="float:left; width:96px; max-width:20%; margin:0 10px 10px 0;"> </a> <p>Picollo is a new library for serious performance work in .NET. Picollo stands for <em>Performance Instrumentation and Continuous Observation for Low-Level Optimization</em>. It allows you to measure code performance with cycle-level precision, moving the time resolution to the picosecond level.</p> </div> <p>The initial public release of <a href="https://github.com/picollodev/Picollo" target="_blank">Picollo</a> <a href="https://www.nuget.org/packages/Picollo/0.1.0" target="_blank">v0.1.0</a> contains two components. First, a modern version of an HDR histogram, which is much faster for recording data and easier to use. It has a thread-local implementation that allows scaling metrics collection across many threads with minimal impact on performance of the existing code. Second, a set of APIs for <a href="https://man7.org/linux/man-pages/man2/perf_event_open.2.html" target="_blank">`perf_event_open`</a>, including fast-path reads, that give raw access to PMU counters from .NET on Linux, WSL included.</p>