On Mon, 9 Feb 2004, Pierre-Alain Joye wrote:

>On Mon, 9 Feb 2004 15:14:46 +0100 (CET)
>Derick Rethans <[EMAIL PROTECTED]> wrote:
>
>> > So this is bug is bogus, and this is the expected behavior. Unset
>> > (or set the var null) frees the memory only if memory_limit is
>> > enabled and not equal to -1 (unlimited) for both php5 and php4.
>> 
>> memory_limit has nothing to with the real memory usage. m_l only is
>> internal emalloc'ed and efree'd memory.
>
>Not sure if I got the idea ;). If compiled with m_l, unset frees the var
>and the mem. If not, the mem is still allocated. Btw I was wrong,
>memory_limit set to -1 works too.

    Dunno about that..

>> > Or is there any "performance" issues there?
>> 
>> I think it's a default unix thing actually :)
>
>Hmm, I'm missing something here. If I understand this is due to my
>poor linux if I can't free the mem in my php script? :) but only if
>I use the memory_limit option.

    I think Derick meant that free(3) doesn't actually "free" the
    memory outside the process. It does become free for the running
    process. Or something like that. :)

    --Jani
    

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