[Haskell-cafe] ansi2html - one program, several issues
gtener at gmail.com
Sat Jul 19 16:49:54 EDT 2008
I forgot to mention that the memory consumption is several times higher than
file size. On 8,3 Mb file:
> 532 MB total memory in use (4 MB lost due to fragmentation).
Having that 8 Mb in memory is not the problem. 532 Mb is another story. In
general, the program consumes roughly 64 times more memory than file size
and it scales linearly.
On Sat, Jul 19, 2008 at 9:52 PM, Chaddaï Fouché <chaddai.fouche at gmail.com>
> 2008/7/19 Krzysztof Skrzętnicki <gtener at gmail.com>:
> > Hi all
> > 1) Profiling shows that very simple functions are source of great memory
> > time consumption. However, if I turn them off and simply print their
> > arguments instead, the overall time and memory consumption doesn't
> > But now another function is acting badly. My guess: somehow the cost of
> > Parsec code is shifted into whatever function is using it's output. Let's
> > see:
> Are you using Parsec to parse the whole file ? Then your problem is
> there : Parsec needs to read and process the whole file before it can
> give us any output since it thinks it could have to give us an error
> instead and it can't be sure of that before he has read the whole
> In your case, your problem is such that you would prefer to treat the
> file as a stream, isn't it ?
> There are some parser library that can give output lazily (look at
> polyparse flavour), another option would be to only use Parsec where
> you need it and just read and print the ordinary text for example.
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