On Thu, 31 Jan 2008 12:32:24 +0100
Andi Kleen <[EMAIL PROTECTED]> wrote:
> On Thu, Jan 31, 2008 at 05:52:09AM -0500, Rik van Riel wrote:
> > Don't malloc() and free() hopelessly fragment memory
> > over time, ensuring that little related data can be
> > found inside each 1MB chunk if the process
On Thu, Jan 31, 2008 at 05:52:09AM -0500, Rik van Riel wrote:
> On Thu, 31 Jan 2008 12:06:10 +0100
> Andi Kleen <[EMAIL PROTECTED]> wrote:
>
> > > Yeah, the 2.5 switch to physical scanning killed us there.
> > >
> > > I still don't know why my
> > >
On Thu, 31 Jan 2008 12:06:10 +0100
Andi Kleen <[EMAIL PROTECTED]> wrote:
> > Yeah, the 2.5 switch to physical scanning killed us there.
> >
> > I still don't know why my
> > allocate-swapspace-according-to-virtual-address change didn't
> > help. Much. Marcelo played with that a bit too.
>
>
> Yeah, the 2.5 switch to physical scanning killed us there.
>
> I still don't know why my allocate-swapspace-according-to-virtual-address
> change didn't help. Much. Marcelo played with that a bit too.
I've been thinking about just always doing swap on > page clusters.
Any reason swapping
On Thu, 31 Jan 2008 11:15:08 +0100 Andi Kleen <[EMAIL PROTECTED]> wrote:
> Peter Zijlstra <[EMAIL PROTECTED]> writes:
> >
> > Ah, that is Lennarts Pulse Audio thing, he has samples in memory which
> > might not have been used for a while, and he wants to be able to
> > pre-fetch those when he
On Thu, 31 Jan 2008 11:10:13 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> On Thu, 2008-01-31 at 02:05 -0800, Andrew Morton wrote:
> > On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> >
> > >
> > > On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
> >
Peter Zijlstra <[EMAIL PROTECTED]> writes:
>
> Ah, that is Lennarts Pulse Audio thing, he has samples in memory which
> might not have been used for a while, and he wants to be able to
> pre-fetch those when he suspects they might need to be played. So that
> once the audio thread comes along and
On Thu, 2008-01-31 at 02:05 -0800, Andrew Morton wrote:
> On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> >
> > On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
> > > On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <[EMAIL PROTECTED]>
> > > wrote:
> >
On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
> > On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> >
> > >
> > > On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
> >
On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
> On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> >
> > On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
> >
> > > Implementation-wise: make_pages_present() _can_ be converted to do this.
> > > But
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
>
> > Implementation-wise: make_pages_present() _can_ be converted to do this.
> > But it's a lot of patching, and the result will be a cleaner, faster and
>
On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
> Implementation-wise: make_pages_present() _can_ be converted to do this.
> But it's a lot of patching, and the result will be a cleaner, faster and
> smaller core MM. Whereas your approach is easy, but adds more code and
> leaves the
On Thu, 31 Jan 2008 09:44:00 +0100 Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> On Wed, 2008-01-30 at 14:40 -0800, Andrew Morton wrote:
> > On Wed, 30 Jan 2008 18:28:59 +0100
> > Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> >
> > > Implement MADV_WILLNEED for anonymous pages by walking the page
On Wed, 2008-01-30 at 14:40 -0800, Andrew Morton wrote:
> On Wed, 30 Jan 2008 18:28:59 +0100
> Peter Zijlstra <[EMAIL PROTECTED]> wrote:
>
> > Implement MADV_WILLNEED for anonymous pages by walking the page tables and
> > starting asynchonous swap cache reads for all encountered swap pages.
>
>
On Wed, 2008-01-30 at 14:40 -0800, Andrew Morton wrote:
On Wed, 30 Jan 2008 18:28:59 +0100
Peter Zijlstra [EMAIL PROTECTED] wrote:
Implement MADV_WILLNEED for anonymous pages by walking the page tables and
starting asynchonous swap cache reads for all encountered swap pages.
Why cannot
On Thu, 31 Jan 2008 09:44:00 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Wed, 2008-01-30 at 14:40 -0800, Andrew Morton wrote:
On Wed, 30 Jan 2008 18:28:59 +0100
Peter Zijlstra [EMAIL PROTECTED] wrote:
Implement MADV_WILLNEED for anonymous pages by walking the page tables and
On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
Implementation-wise: make_pages_present() _can_ be converted to do this.
But it's a lot of patching, and the result will be a cleaner, faster and
smaller core MM. Whereas your approach is easy, but adds more code and
leaves the old
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
Implementation-wise: make_pages_present() _can_ be converted to do this.
But it's a lot of patching, and the result will be a cleaner, faster and
smaller
On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
Implementation-wise: make_pages_present() _can_ be converted to do this.
But it's a lot of
On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:12 -0800, Andrew Morton wrote:
On Thu, 2008-01-31 at 02:05 -0800, Andrew Morton wrote:
On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
On Thu, 31 Jan 2008 10:35:18 +0100 Peter Zijlstra [EMAIL PROTECTED]
wrote:
On Thu,
Peter Zijlstra [EMAIL PROTECTED] writes:
Ah, that is Lennarts Pulse Audio thing, he has samples in memory which
might not have been used for a while, and he wants to be able to
pre-fetch those when he suspects they might need to be played. So that
once the audio thread comes along and stuffs
On Thu, 31 Jan 2008 11:10:13 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 02:05 -0800, Andrew Morton wrote:
On Thu, 31 Jan 2008 10:53:26 +0100 Peter Zijlstra [EMAIL PROTECTED] wrote:
On Thu, 2008-01-31 at 01:47 -0800, Andrew Morton wrote:
On Thu, 31 Jan
On Thu, 31 Jan 2008 11:15:08 +0100 Andi Kleen [EMAIL PROTECTED] wrote:
Peter Zijlstra [EMAIL PROTECTED] writes:
Ah, that is Lennarts Pulse Audio thing, he has samples in memory which
might not have been used for a while, and he wants to be able to
pre-fetch those when he suspects they
Yeah, the 2.5 switch to physical scanning killed us there.
I still don't know why my allocate-swapspace-according-to-virtual-address
change didn't help. Much. Marcelo played with that a bit too.
I've been thinking about just always doing swap on page clusters.
Any reason swapping
On Thu, 31 Jan 2008 12:06:10 +0100
Andi Kleen [EMAIL PROTECTED] wrote:
Yeah, the 2.5 switch to physical scanning killed us there.
I still don't know why my
allocate-swapspace-according-to-virtual-address change didn't
help. Much. Marcelo played with that a bit too.
I've been
On Thu, 31 Jan 2008 12:32:24 +0100
Andi Kleen [EMAIL PROTECTED] wrote:
On Thu, Jan 31, 2008 at 05:52:09AM -0500, Rik van Riel wrote:
Don't malloc() and free() hopelessly fragment memory
over time, ensuring that little related data can be
found inside each 1MB chunk if the process is large
On Thu, Jan 31, 2008 at 05:52:09AM -0500, Rik van Riel wrote:
On Thu, 31 Jan 2008 12:06:10 +0100
Andi Kleen [EMAIL PROTECTED] wrote:
Yeah, the 2.5 switch to physical scanning killed us there.
I still don't know why my
allocate-swapspace-according-to-virtual-address change didn't
On Wed, 30 Jan 2008 18:28:59 +0100
Peter Zijlstra <[EMAIL PROTECTED]> wrote:
> Implement MADV_WILLNEED for anonymous pages by walking the page tables and
> starting asynchonous swap cache reads for all encountered swap pages.
Why cannot this use (a perhaps suitably-modified)
On Wed, 2008-01-30 at 18:28 +0100, Peter Zijlstra wrote:
> Subject: mm: MADV_WILLNEED implementation for anonymous memory
>
> Implement MADV_WILLNEED for anonymous pages by walking the page tables and
> starting asynchonous swap cache reads for all encountered swap pages.
>
> Doing so required
On Wed, 2008-01-30 at 18:28 +0100, Peter Zijlstra wrote:
Subject: mm: MADV_WILLNEED implementation for anonymous memory
Implement MADV_WILLNEED for anonymous pages by walking the page tables and
starting asynchonous swap cache reads for all encountered swap pages.
Doing so required a
On Wed, 30 Jan 2008 18:28:59 +0100
Peter Zijlstra [EMAIL PROTECTED] wrote:
Implement MADV_WILLNEED for anonymous pages by walking the page tables and
starting asynchonous swap cache reads for all encountered swap pages.
Why cannot this use (a perhaps suitably-modified) make_pages_present()?
--
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