On Mon, 25 Jul 2005 19:12:47 +0530, VASM said:
> are there any specific reasons for not using large page size for
> userspace processes
Assume you can use 4K or 4M page sizes. Compute the total memory usage
for a system that has 50 processes running, each 1556K in size
pgpcU7vVX9g8Z.pgp
De
On 7/25/05, Nix <[EMAIL PROTECTED]> wrote:
> On Mon, 25 Jul 2005, VASM wrote:
> > i had one question
> > does the linux kernel support only one default page size even if the
> > processor on which it is working supports multiple ?
>
> No. Some architectures have compile-time support for multiple d
On Mon, 25 Jul 2005, VASM wrote:
> i had one question
> does the linux kernel support only one default page size even if the
> processor on which it is working supports multiple ?
No. Some architectures have compile-time support for multiple different
page sizes (e.g. Itanium, SPARC64); many have
On 7/25/05, VASM <[EMAIL PROTECTED]> wrote:
> i had one question
> does the linux kernel support only one default page size even if the
> processor on which it is working supports multiple ?
>
The PAGE_SIZE depends on the architecture and it do supports different
page_sizes depending on the archi
i had one question
does the linux kernel support only one default page size even if the
processor on which it is working supports multiple ?
On 7/25/05, Nix <[EMAIL PROTECTED]> wrote:
> On 22 Jul 2005, Jesper Juhl suggested tentatively:
> > You can
> > A) look in the .config file for your curren
On 22 Jul 2005, Jesper Juhl suggested tentatively:
> You can
> A) look in the .config file for your current kernel (if your arch
> supports different page sizes at all).
> B) You can use the getpagesize(2) syscall at runtime. getpagesize()
> returns the nr of bytes in a page - man getpagesize -
Hi, Jesper,
RE:
> > 2. how can one tune it (for 2.6.*)?
>
> For some archs the page size can be set at compile-time with
> CONFIG_PAGE_SIZE_4KB, CONFIG_PAGE_SIZE_8KB etc - mips is an example of
> such an arch (also take a look at CONFIG_HUGETLB_PAGE and friends).
OK, now i figured it out. On AMD
On 7/22/05, Gaspar Bakos <[EMAIL PROTECTED]> wrote:
> Hi,
>
> Sorry for this nursery-school question.
>
> Could someone briefly explain me :
> 1. what is the kernel page size (any _useful_ pointer on the web is fine),
Depends on arch. Take a look at PAGE_SIZE and PAGE_SHIFT - look in
include/asm
Gaspar Bakos wrote:
Hi,
Sorry for this nursery-school question.
Could someone briefly explain me :
1. what is the kernel page size (any _useful_ pointer on the web is fine),
2. how can one tune it (for 2.6.*)?
3. what kind of effect does it have on system performance, if it is
tuneable, and if
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