Re: filecache/swapcache questions [RFC] [RFT] [PATCH] kanoj-mm12-2.3.8

[Andrea Arcangeli <andrea@suse.de>]

On Mon, 28 Jun 1999, Stephen C. Tweedie wrote:

>> if you need evidence that shrink_mmap() will keep a system running without
>> swapping, just run 2.3.8 :) :)
>
>2.3.8 shows up slower on several benchmarks because of its reluctance to
>swap.

Here the point is if you are swapping over your ramdisk or over my HD :).
Over my HD (system+swap all in the same IDE disk) you must _avoid_ to swap
at all costs if you care about performances. And btw with the clock
algorithm nobody can ever be sure to get a good swap/cache balance. With
the page-LRU code I have almost ready for 2.3.x (definitely stable for
2.2.x) instead we'll be sure to swapout only when there isn't plenty of
cache recyclable.

Andrea

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