vmprof-firefox-blog first draft

posts/2024/05/vmprof-firefox.md

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+<!--
+.. title: vmprof-firefox-converter
+.. slug: 
+.. date: 2024-04-15 13:49:00 UTC
+.. tags:
+.. category:
+.. link:
+.. description:
+.. type: text
+.. author: Christoph Jung
+-->
+
+# Introduction
+
+If you ever wanted to profile your Python code on PyPy, you probably came across VMProf.
+
+Vmprof's console output can already give some insights into where your code spends time, 
+but it is far from showing all the information VMProf captures while profiling.
+
+Created in the context of my bachelor's thesis, the vmprof-firefox-converter is a tool for viewing VMProf profiles with the Firefox profilers user interface. 
+Here you can zoom into profiles, look at different visualizations like flamegraphs,
+or even dive deeper into jitted functions.
+
+
+# Usage
+
+Profile your code with VMProf
+
+`pypy -m vmprof -o profile.prof yourcode.py <args>`
+
+Then convert the output file 
+
+`pypy -m vmprofconvert -convert profile.prof`
+
+Or let the converter take care of everything and run your code directly
+
+`pypy -m vmprofconvert -run yourcode.py <args>`
+
+Both `-convert` and `-run` will magically open the Firefox profiler in your browser
+
+![firefox profiler](https://github.com/Cskorpion/vmprof-firefox-converter/blob/main/images/firefox.png?raw=true)
+
+You may even create a sharable zip file that contains all the files necessary for investigating performance issues on another (person's) system. 
+
+(This includes jitlog, pypylog, all the source files and of course the profile itself)
+
+`pypy -m vmprofconvert --zip -run yourcode.py <args>`
+
+# Getting started
+
+Even though VMProf (and the converter) were created for profiling PyPy, you can also use them with CPython. 
+
+You can get the converter from [GitHub](https://github.com/Cskorpion/vmprof-firefox-converter)