> On Thu, 15 Mar 2007 00:31:18 -0700 (PDT) David Miller <[EMAIL PROTECTED]>
> wrote:
> From: Andrew Morton <[EMAIL PROTECTED]>
> Date: Thu, 15 Mar 2007 00:22:49 -0800
>
> > So... what would happen if sparc64 were to use neither quicklists nor
> > slab? Just grab these pages from the page alloca
From: Andrew Morton <[EMAIL PROTECTED]>
Date: Thu, 15 Mar 2007 00:22:49 -0800
> So... what would happen if sparc64 were to use neither quicklists nor
> slab? Just grab these pages from the page allocator and clear them?
The page table allocator is heavier weight than the quicklists,
although ob
> On Mon, 12 Mar 2007 19:32:11 -0700 (PDT) David Miller <[EMAIL PROTECTED]>
> wrote:
> From: David Miller <[EMAIL PROTECTED]>
> Date: Mon, 12 Mar 2007 19:26:16 -0700 (PDT)
>
> > From: Paul Mackerras <[EMAIL PROTECTED]>
> > Date: Tue, 13 Mar 2007 11:37:32 +1100
> >
> > > David Miller writes:
> >
On Mon, Mar 12, 2007 at 03:51:57PM -0700, David Miller wrote:
> Someone with some extreme patience could do the sparc 32-bit port too,
> in fact it's lacking the cached PGD update logic that x86 et al. have
> so it would even end up being a bug fix :-) This lack is why sparc32
> pre-initializes th
From: David Miller <[EMAIL PROTECTED]>
Date: Mon, 12 Mar 2007 19:26:16 -0700 (PDT)
> From: Paul Mackerras <[EMAIL PROTECTED]>
> Date: Tue, 13 Mar 2007 11:37:32 +1100
>
> > David Miller writes:
> >
> > > I ported this to sparc64 as per the patch below, tested on
> > > UP SunBlade1500 and 24 cpu N
From: Paul Mackerras <[EMAIL PROTECTED]>
Date: Tue, 13 Mar 2007 11:37:32 +1100
> David Miller writes:
>
> > I ported this to sparc64 as per the patch below, tested on
> > UP SunBlade1500 and 24 cpu Niagara T1000.
>
> Did you see any performance improvement? We used to have quicklists
> on ppc,
On Tue, 13 Mar 2007, Paul Mackerras wrote:
> Also, I didn't understand why we have to do quicklists to take
> advantage of the fact that the pages are in a pristine state when they
> are freed. I thought the whole point of the slab allocator was to be
> able to take advantage of that...
It used
David Miller writes:
> I ported this to sparc64 as per the patch below, tested on
> UP SunBlade1500 and 24 cpu Niagara T1000.
Did you see any performance improvement? We used to have quicklists
on ppc, but I remain to be convinced that they actually help.
Also, I didn't understand why we have t
From: Christoph Lameter <[EMAIL PROTECTED]>
Date: Sat, 10 Mar 2007 18:09:23 -0800 (PST)
> 6 patches follow this message:
>
> [QUICKLIST 1/6] Extract quicklist implementation from IA64
> [QUICKLIST 2/6] i386: quicklist support
> [QUICKLIST 3/6] i386: Use standard list manipulators for pgd_list
> [
On Mon, Mar 12, 2007 at 04:12:32AM -0700, Christoph Lameter wrote:
> On Sun, 11 Mar 2007, David Miller wrote:
> > The reason is that every time I've monitored the allocation patterns
> > of these things on SMP, the page table chunks always get released on a
> > different cpu than where they were in
From: Christoph Lameter <[EMAIL PROTECTED]>
Date: Mon, 12 Mar 2007 04:12:32 -0700 (PDT)
> On Sun, 11 Mar 2007, David Miller wrote:
>
> > I'm going to make the radical declaration that it be perhaps often
> > better to always initialize page table chunks to all zeros on
> > allocation.
>
> That i
On Sun, 11 Mar 2007, David Miller wrote:
> I'm going to make the radical declaration that it be perhaps often
> better to always initialize page table chunks to all zeros on
> allocation.
That is the case if most of the page is going to be used soon. If we have
sparse access patterns then not ze
From: Christoph Lameter <[EMAIL PROTECTED]>
Date: Sat, 10 Mar 2007 18:09:23 -0800 (PST)
> Page table pages have the characteristics that they are typically zero
> or in a known state when they are freed. This is usually the exactly
> same state as needed after allocation. So it makes sense to buil
This patchset introduces an arch independent framework to handle lists
of recently used page table pages.
Page table pages have the characteristics that they are typically zero
or in a known state when they are freed. This is usually the exactly
same state as needed after allocation. So it makes s
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