knupfer / hs-profile

Overview

This mode profiles on every save the current haskell buffer.

Results will be displayed directly as overlays in the buffer.

https://imgur.com/5NFlGWf.png

Usage

Put this file into your load path and put in your .emacs (require ‘hs-profile). Run hs-profile-run to make a one time profile or run hs-profile-mode to automatically reprofile on every save.

Profiling is done asynchronously, so don’t worry about blocking emacs.

Dependencies

It requires

• visual-prof from hackage
• GNU R (for plots)

Furthermore, used modules must be installed with profiling enabled.

Shortcomings

At least for now, only executable work which don’t need any command line argument. Processes won’t get killed, so if you write something which takes a lot time to run, it will run until it terminates or you kill it. For retrieving profiling data, your code must be executed, so be aware when you use this with code which operates a lot with IO.

Contribution

You’re warmly encouraged to report issues, feature requests and style improvements. I’m learning and enjoy to hear any hint on making stuff better.