In message <[EMAIL PROTECTED]>, Remy Nonnenmacher wr
ites:
>>From the /usr/src/lib/libc/stdlib/malloc.c sources, it seems that this
>is due to not shrinking/relocating pagedir pages (free_pages(), comment
>around line 940). This means that returning pages stop at first
>allocated pagedir.
That is actually not correct. the pagedir is allocated with mmap
from anonymous memory and does not affect the sbrk(2)'ing.
>It seems to be a problem also in some other Unixes, anyway, but i would
>like to know if:
Presuming your question then is "can the pagedir be shrunk ?" the
answers are:
>1) This is historical and must not be fixed.
no.
>2) This can be easily fixed.
maybe.
>3) Fixing it would lead to enormous problems. Better keep it like this.
unlikely.
Have you read the paper in src/share/doc/papers/malloc ?
Also, if you are truly concerned with the returning to the OS of
memory, examine the 'H' option to phkmalloc.
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