Re: [Caml-list] Performance penalty of exception handling

[David Rajchenbach-Teller <david.teller@univ-orleans.fr>]

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I did some benchmarking a while ago.
You can find the summary here:
https://hal.inria.fr/inria-00432575/PDF/monad.pdf

Cheers,
 David



On 16/09/15 21:08, Helmut Brandl wrote:
> Hi all,
> 
> I use exeption handling quite frequently even in inner loops. A common
> pattern:
> 
>     let some_function ... =
>             ...
>            if cannot_compute then raise Not_found else value
> 
>     try
>         let value = some_function ... in
>         ...
>     with Not_found ->
>        handle_exception
> 
> I use this pattern even if the direct caller of "some_function" handles
> the exception. In many cases I could design "some_function" in a way
> that it returns an optional value and check the optional value in the
> caller. Is this significantly (at least 10%) faster? If not, I would
> stay with my present design. However I am pressed for performance in the
> inner loops (I am only interested in compilation to native).
> 
> Is there any information available on the preformance penalty of
> exception handling? Any hints? Thanks in advance.
> 
> Regards
> Helmut
> 



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