[Haskell-cafe] [ANN] profiteur: a tool to visualise GHC .prof files

Jasper Van der Jeugt m at jaspervdj.be
Tue Feb 25 19:01:08 UTC 2014

I uploaded a new version ( which works with the `yi.prof` file
you provided.

Hope this helps,

> Hi,
> Great! The way profiling output analysis is now is a huge pain in the
> ass. I'm very glad to see that something new is up.
> I did want to try it but I can't get it to run: on ghc-20140225, aeson
> fails to compile so that doesn't work. I did manage to compile it with
> 7.6.3 but after trying to run it on a profiling output I had lying
> around, it failed with:
> /home/shana/programming/yi/yi/yi.prof: Failed reading: takeWith
> You can find the file in question at [1] (~1.4MB). I'm most eager to try
> this out so it'd be great if you could have a look.
> Are there plans to support on-line rendering? I find it very useful to
> be able to see the profiling output as the program is running.
> Previously I ended up having to periodically (~5 sec) generate the
> postscript file and then have the postscript viewer watch it for
> changes. It was very cumbersome but it sometimes worked. It'd be great
> if your software could do something like this!
> Are flags other than -p supported? I know that it's possible to get
> different profiling output, such as on size of allocated structures &c.
> [1]: http://fuuzetsu.co.uk/misc/yi.prof
> -- 
> Mateusz K.

More information about the Haskell-Cafe mailing list