On Wed, Oct 17, 2012 at 10:32:13AM +0800, Ni zhan Chen wrote:
> On 10/03/2012 08:04 AM, Kirill A. Shutemov wrote:
> >On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
> >>On Tue, 2 Oct 2012 18:19:22 +0300
> >>"Kirill A. Shutemov" wrote:
> >>
> >>>During testing I noticed big (up to
On Wed, Oct 17, 2012 at 10:32:13AM +0800, Ni zhan Chen wrote:
On 10/03/2012 08:04 AM, Kirill A. Shutemov wrote:
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
On Tue, 2 Oct 2012 18:19:22 +0300
Kirill A. Shutemov kirill.shute...@linux.intel.com wrote:
During testing I
On 10/03/2012 08:04 AM, Kirill A. Shutemov wrote:
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
On Tue, 2 Oct 2012 18:19:22 +0300
"Kirill A. Shutemov" wrote:
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if
On 10/03/2012 08:04 AM, Kirill A. Shutemov wrote:
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
On Tue, 2 Oct 2012 18:19:22 +0300
Kirill A. Shutemov kirill.shute...@linux.intel.com wrote:
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some
On Wed, 3 Oct 2012 03:04:02 +0300
"Kirill A. Shutemov" wrote:
> Is the overview complete enough? Have I answered all you questions here?
Yes, thanks!
The design overview is short enough to be put in as code comments in
suitable places.
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On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
> On Tue, 2 Oct 2012 18:19:22 +0300
> "Kirill A. Shutemov" wrote:
>
> > During testing I noticed big (up to 2.5 times) memory consumption overhead
> > on some workloads (e.g. ft.A from NPB) if THP is enabled.
> >
> > The main
Hi Andrew,
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
> From reading the code, it appears that we initially allocate a huge
> page and point the pmd at that. If/when there is a write fault against
> that page we then populate the mm with ptes which point at the normal
> 4k
On Tue, 2 Oct 2012 18:19:22 +0300
"Kirill A. Shutemov" wrote:
> During testing I noticed big (up to 2.5 times) memory consumption overhead
> on some workloads (e.g. ft.A from NPB) if THP is enabled.
>
> The main reason for that big difference is lacking zero page in THP case.
> We have to
On Tue, Oct 02, 2012 at 06:19:22PM +0300, Kirill A. Shutemov wrote:
> From: "Kirill A. Shutemov"
>
> During testing I noticed big (up to 2.5 times) memory consumption overhead
> on some workloads (e.g. ft.A from NPB) if THP is enabled.
>
> The main reason for that big difference is lacking zero
From: "Kirill A. Shutemov"
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if THP is enabled.
The main reason for that big difference is lacking zero page in THP case.
We have to allocate a real page on read page fault.
A
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if THP is enabled.
The main reason for that big difference is lacking zero page in THP case.
We have to allocate a real page
On Tue, Oct 02, 2012 at 06:19:22PM +0300, Kirill A. Shutemov wrote:
From: Kirill A. Shutemov kirill.shute...@linux.intel.com
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if THP is enabled.
The main reason for that big
On Tue, 2 Oct 2012 18:19:22 +0300
Kirill A. Shutemov kirill.shute...@linux.intel.com wrote:
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if THP is enabled.
The main reason for that big difference is lacking zero page in
Hi Andrew,
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
From reading the code, it appears that we initially allocate a huge
page and point the pmd at that. If/when there is a write fault against
that page we then populate the mm with ptes which point at the normal
4k zero
On Tue, Oct 02, 2012 at 03:31:48PM -0700, Andrew Morton wrote:
On Tue, 2 Oct 2012 18:19:22 +0300
Kirill A. Shutemov kirill.shute...@linux.intel.com wrote:
During testing I noticed big (up to 2.5 times) memory consumption overhead
on some workloads (e.g. ft.A from NPB) if THP is enabled.
On Wed, 3 Oct 2012 03:04:02 +0300
Kirill A. Shutemov kir...@shutemov.name wrote:
Is the overview complete enough? Have I answered all you questions here?
Yes, thanks!
The design overview is short enough to be put in as code comments in
suitable places.
--
To unsubscribe from this list: send
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