[Haskell-cafe] possible memory leak in uvector 0.1.0.3

[Manlio Perillo]

Don Stewart ha scritto:
> manlio_perillo:
>> Hi.
>>
>> In the "help optimizing memory usage for a program" I discovered some  
>> interesting things:
>>
>>
>> 2) UArr from uvector leaks memory.
>>    I'm rather sure about this.
> 
> Note it was just allocating more than was required, it wasn't "leaking"
> it in any sense (i.e. losing track of the memory). 
> 
>> Using this version memory usage is, finally, 643 MB!
>> (and execution if a bit faster, too).
>  
> Yep, known bug, and closed last month.
>  

Ok.
I should have checked the bug tracker.


>> The other program, with a lot of array concatenations, still eats a lot  
>> of memory...
> 
> Concatenating arrays generally copies data. Which uses memory.
> 

Of course, but why the garbage collector does not "release" this 
temporary used memory?
Note that I'm using the -F1 flag with the RST.

Maybe it is a problem with IntMap, when there are a lot of keys?



Thanks  Manlio Perillo