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
Note: Currently viewprof doesn’t support Windows because the underlying library (vty) doesn’t support it yet. See #1.
stack install viewprof
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.