Re: [PATCH] 2.6.23-rc1-mm1 - fix missing numa_zonelist_order sysctl

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On Thu, 02 Aug 2007 11:07:38 -0400
Lee Schermerhorn <[email protected]> wrote:

> Of course, I don't have any idea of what is a "reasonable amount".
> Guess I could look at non-movable zone memory usage in a system at
> typical or peak load to get an idea.  Anyone have any data in this
> regard?
> 
I'm sorry that I have no data and idea. 
ZONE_MOVABLE is too young to be used under business workload...

just I feel...
Considering i686 which divides memory into NORMAL and HIGHMEM, it seems
that 4G to 8G servers looks stable under various workload in my experience.

Then, at least, 12.5% to 25% of "Total Memory - Hugepages" memory should be
under ZONE_NORMAL. But this is from experience of 32bit/SMP :(

Thanks,
-Kame

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