Re: [RFC] Limit the size of the pagecache

[Nick Piggin]

Peter Zijlstra wrote:
> On Tue, 2007-01-23 at 16:49 -0800, Christoph Lameter wrote:

> > 2. Insure rapid turnaround of pages in the cache.

[...]

> The  only maybe valid point would be 2, and I'd like to see if we can't
> solve that differently - a better use-once logic comes to mind.

There must be something I'm missing with that point. The faster
the turnaround of pagecache pages, the *less* efficiently the
pagecache is working (assuming a rapid turnaround means a high
rate of pages brought into, then reclaimed from pagecache).

I can't argue that a smaller pagecache will be subject to a
higher turnaround given the same workload, but I don't know why
that would be a good thing.

--
SUSE Labs, Novell Inc.
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