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

Jasper Van der Jeugt m at jaspervdj.be
Tue Feb 25 19:20:10 UTC 2014

The twitching should be fixed in version Thanks for the comments!


On Tue, Feb 25, 2014 at 8:14 PM, sykora <sykora at lucentbeing.com> wrote:
> I can confirm this "twitching" behavior. I ran profiteur on a ~4.1M
> profile, and the tree browser works fine, except for the constant
> resizing.
> Great work, I've been looking for this kind of tool for a while.
> On Tue, Feb 25, 2014 at 2:08 PM, Mateusz Kowalczyk
> <fuuzetsu at fuuzetsu.co.uk> wrote:
>> On 25/02/14 19:01, Jasper Van der Jeugt wrote:
>>> I uploaded a new version ( which works with the `yi.prof` file
>>> you provided.
>>> Hope this helps,
>>> Peace,
>>> Jasper
>>>> 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.
>> That indeed lets me load up the file. Now I notice a problem with the
>> rendering itself. When I open the generated file, the rendering on of
>> the whole thing keeps twitching: what's happening is that your model
>> realises there's some space still left so it tries to resize to maximum
>> space available _but_ it resizes too much and scrollbars appear (making
>> the whole thing 'jump' slightly). It then notices that it in fact
>> doesn't fit inside the window and goes a bit smaller. Scrollbars
>> disappear (so it jumps again) but then it notices that there's some
>> space left and so on and so on... It's the same behaviour in Firefox and
>> Chromium and resizing my browser window doesn't seem to affect it, it
>> keeps toggling between slightly-too-small and slightly-too-big.
>> --
>> Mateusz K.
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