Re: [PATCH 2.6.20-rc5 1/1] MM: enhance Linux swap subsystem

yunfeng zhang wrote:
Performance improvement should occur when private pages of multiple processes are messed up,

Ummm, yes. Linux used to do this, but doing virtual scans
just does not scale when a system has a really large amount
of memory, a large number of processes and multiple zones.

We've seen it fall apart with as little as 8GB of RAM.

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