Re: Page fault scalability patch V18: Overview

[Darren Williams]

Hi Darren

On Fri, 04 Mar 2005, Darren Williams wrote:

> Hi Christoph
> 
> On Tue, 01 Mar 2005, Christoph Lameter wrote:
> 
> > Is there any chance that this patchset could go into mm now? This has been
> > discussed since last August....
> > 
> > Changelog:
> > 
> > V17->V18 Rediff against 2.6.11-rc5-bk4
> 
> Just applied this patch against 2.6.11, however with the patch applied
> and all the aditional config options not set, the kernel hangs at
> Freeing unused kernel memory: 240kB freed 
> FYI:
> 
> boot    atomic   prezero
> OK        on      on
> fail      off     on
> fail      off     off
> OK        on      off

A bit extra info on the system:
HP rx8620 Itanium(R) 2 16way
  
> 
> > V16->V17 Do not increment page_count in do_wp_page. Performance data
> > 	posted.
> > V15->V16 of this patch: Redesign to allow full backback
> > 	for architectures that do not supporting atomic operations.
> > 
> > An introduction to what this patch does and a patch archive can be found on
> > http://oss.sgi.com/projects/page_fault_performance. The archive also has the
> > result of various performance tests (LMBench, Microbenchmark and
> > kernel compiles).
> > 
> > The basic approach in this patchset is the same as used in SGI's 2.4.X
> > based kernels which have been in production use in ProPack 3 for a long time.
> > 
> > The patchset is composed of 4 patches (and was tested against 2.6.11-rc5-bk4):
> > 
> [SNIP]
> 
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> --------------------------------------------------
> Darren Williams <dsw AT gelato.unsw.edu.au>
> Gelato@UNSW <www.gelato.unsw.edu.au>
> --------------------------------------------------
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--------------------------------------------------
Darren Williams <dsw AT gelato.unsw.edu.au>
Gelato@UNSW <www.gelato.unsw.edu.au>
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