Re: [RFC 2.6.11-rc2-mm2 7/7] mm: manual page migration -- sys_page_migrate

Andi Kleen
2005-02-16T16:08:33Z

On Wed, Feb 16, 2005 at 07:49:23AM -0800, Paul Jackson wrote:
> Martin wrote:
> > From reading the code (not actual experiments, yet), it seems like we won't
> > even wake up the local kswapd until all the nodes are full. And ...
>
> Martin - is there a Cliff Notes summary you could provide of this
> subthread you and Andi are having? I got lost somewhere along the way.

I didn't really have much thread, but as far as I understood it
Martin just wants kswapd to be a bit more aggressive in making sure
all nodes always have local memory to allocate from.

I don't see it as a pressing problem right now, but it may help
for some memory intensive workloads a bit (see numastat numa_miss output for
various nodes on how often a "wrong node" fallback happens)

-Andi