performance-profileing.md

Performance Profiling

• Flame Graphs

  • Flame graphs are a visualization of hierarchical data, created to visualize stack traces of profiled software so that the most frequent code-paths to be identified quickly and accurately.

  • pyspy
  • https://roman.pt/posts/python-performance-profiling/
  • Pyspy live https://www.youtube.com/watch?v=p8s2fzqA07s

• Instrumentation

  • TODO define

• Tracy Profiler

  • A real time, nanosecond resolution, remote telemetry, hybrid frame and sampling profiler for games and other applications.

• All my favorite tracing tools: eBPF, QEMU, Perfetto, new ones I built and more

  • Aewsome animated gifs and real examples

• Python Numbers Every Programmer Should Know

  • Timing metrics for common python operations (integer add, function call, creating a new dict)

• Counting cycles and instructions on the Apple M1 processor

  • How do you measure performance?
    • modern process's just overclock to run faster
    • [branch-prediction] takes power
  • What is you wanted to measure page useaage?

• FunctionTrace - A graphical Python profiler that provides a clear view of your application's execution while being both low-overhead and easy to use.

• Understanding Request Latency with Profiling [latency]

• MediaWiki - Unifying our mobile and desktop domains How we achieved 20% faster mobile response times, improved SEO, and reduced infrastructure load.

  • Ditching separate mobile pages increased performance by 20%

Algorithms Platforms

Real data vs theoretical best/worst cast

Data throughput, response times.

• GFXBench

• shish/eventtracer-py

  • Python profiler that outputs in a format that can be loaded by chrome dev tools for visulisations

• timeit

• hurl

  • human abstraction for curl and some performance graphs

• [web-performance]