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
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
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 different
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
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
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
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
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 -
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 - I'm
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 current
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
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
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
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
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
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 it worth changing
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 it worth changing
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
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
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