viewprof

viewprof is a text-based interactive GHC .prof viewer.

It has three display modes:

• Aggregate cost centers view: This is the default view. It groups cost centers by their name and module name, like the middle section of .prof files.
• Call sites view: If you press enter on a cost center, viewprof displays call sites of the cost center you selected. This view tells how much the cost center spent for each call site.
• Modules view: If you press M, viewprof displays the module level breakdown. This view tells coarse overview of cost attribution.

Installation

stack install viewprof

On Windows

Prerequisites

• Docker for Windows or Docker Toolbox.
  • Currently tried with: Docker Toolbox v17.04.0ce on Windows 10 Home.
• cygpath
  • Bundled with Cygwin, MSYS2 etc.

How to install and launch

git clone git@github.com:maoe/viewprof.git
cd viewprof/docker
docker-machine start
docker build -t viewprof .
.\viewprof.bat path/to/file.prof

Usage

keys	action
q or escape	quit the current view
j or ↓	move focus down
k or ↑	move focus up
gg	move focus to the top
G	move focus to the bottom
C	display aggregate cost center view
M	switch to module breakdown
enter	select a cost center and display call sites
t	sort by time
a	sort by allocation
e	sort by # of entries
h or ?	show key bindings
i	show profile information

Acknowledgement

viewprof was originally meant to be a Haskell port of mkotha/viewprof, which is a text-based .prof viewer written in Common Lisp.