Re: [TECH] Max mémoir e par processus

[Sébastien Dinot <sdinot AT april.org>]

Ludovic Pénet a écrit :
| Quelle est la taille limite de la mémoire adressable par *un
| processus* avec un noyau 2.6.18 ou ultérieur, sans utiliser de
| patches particulier ? Sur une machine x86 32 bits et sur une machine
| 64 bits type amd64...

J'arrive un peu après la bataille mais voici ce que je viens de
trouver :

http://www.debian.org/ports/amd64/index.en.html

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The AMD64 port is thoroughly 64bit, allowing the user to benefit from
all advantages this architecture has compared to i386:

    * no memory segmentation in low and high memory
    * up to 128TiB virtual address space per process (instead of 2GiB)
    * 64TiB physical memory support instead of 4GiB (or 64GiB with the
      PAE extension)
    * 16 general purpose registers in the CPU instead of 8
    * gcc defaults to SSE2 math instead of 387 FPU
    * gcc omits frame-pointers by default at -O2
    * compilation time optimization uses a common base for AMD64/EM64T
      instead of legacy i386 cruft
    * memory pages are not executable by default

Native execution of legacy 32bit binaries is supported by the kernel,
and core libraries are provided by the ia32-libs package.

----------------------------------------------------------------------

A++, Sébastien

-- 
Sébastien Dinot, sdinot AT april.org
Secrétaire de l'APRIL (http://www.april.org)
Association pour la Promotion et la Recherche en Informatique Libre