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All Projects → vhf → Monomorphist

vhf / Monomorphist

Licence: mit
monomorphist - a JavaScript performance companion

Programming Languages

javascript
184084 projects - #8 most used programming language

Labels

nodeperformancechromev8

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monomorphist

a JavaScript performance companion

This repo contains the code running at mono.morph.ist. It's still early stage / beta software. It's a quick hack I built in airports and airplanes between New York, Hamburg, and Switzerland.

The goal is to provide a few online tools giving V8 JavaScript performance insights.

Node/V8 bailouts

What's available right now is a tool to trace V8 bailouts / deopts by running snippets on various Node versions. If you're not familiar with these things, take a look at bluebird/Optimization killers and v8 bailout reasons.

Each job instance has the following NPM packages pre-installed:

  • lodash
  • bluebird
  • moment
  • underscore
  • q
  • jquery

IRHydra

monomorphist also provides a hosted IRHydra instance and everything needed to generate the artefacts IRHydra needs.

We have more than 100 V8 versions compiled, choose the one for which you'd like to inspect the generated internal representation and assembly.

Architecture of the project

  • The main part is a Meteor application
    • It orchestrates docker containers running user code
    • It schedules building docker images for every node and every v8 version

What you can do to help

  • Open issues to discuss features, suggest improvements or notify me of a bug
  • Via PRs, fix bugs, improve the design, the docs or anything else
  • Contribute explanations about bailout/deopt reasons
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