Re: [rfc][patch 1/2] mm: dont account ZERO_PAGE

Robin Holt
2007-03-30T09:23:32Z

On Fri, Mar 30, 2007 at 05:09:12AM +0200, Nick Piggin wrote:
> > up and read one word from each page to fill the page tables (not sure
> > why that was done), then forked a process for each cpu. At that point,
>
> So not typical, but something that we'd rather not fall over with.

I agree

> I guess large ranges of zero pages could be quite common in startup
> of HPC codes operating on large matricies.

The "not sure why that was done" was referring to this being exactly the
opposite of what a typical HPC application does. Those tend to locate
themselves on the node which will use an address range and the write
touch each of the pages.

Thanks,
Robin