[OT:HUMOR] Re: Anticipatory prefaulting in the page fault handlerV1

From: Adam Heath
Date: Thu Dec 09 2004 - 21:14:35 EST


On Thu, 9 Dec 2004, Christoph Lameter wrote:

> On Wed, 8 Dec 2004, Martin J. Bligh wrote:
>
> > I tried benchmarking it ... but processes just segfault all the time.
> > Any chance you could try it out on SMP ia32 system?
>
> I tried it on my i386 system and it works fine. Sorry about the puny
> memory sizes (the system is a PIII-450 with 384k memory)

You probably get such fast numbers, because I mean, how many pages can 384k of
memory have? I only figure 96 total pages.

> clameter@schroedinger:~/pfault/code$ ./pft -t -b256000 -r3 -f1
> Gb Rep Threads User System Wall flt/cpu/s fault/wsec
> 0 3 1 0.000s 0.004s 0.000s 37407.481 29200.500
> 0 3 2 0.002s 0.002s 0.000s 31177.059 27227.723
>
> clameter@schroedinger:~/pfault/code$ uname -a
> Linux schroedinger 2.6.10-rc3-bk3-prezero #8 SMP Wed Dec 8 15:22:28 PST
> 2004 i686 GNU/Linux
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