Messages in this thread | | | Date | Wed, 9 Jun 1999 12:40:06 +0200 (CEST) | From | Andrea Arcangeli <> | Subject | Re: Byte blasts Linux? |
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On Wed, 9 Jun 1999, Marc Lehmann wrote:
>On Tue, Jun 08, 1999 at 12:47:03AM +0000, Linus Torvalds wrote: >> I certainly always advocate having some swap-space: it makes the "uhhuh, >> I have too little memory" case degrade much more gracefully.. > >yes, with some swap space the box swaps to death, while without swap it >simply locks hard ;)
Please try to reproduce on:
ftp://e-mind.com/pub/andrea/kernel-patches/2.2.9_andrea-VM3.gz
(it's against clean 2.2.9)
About being slower without swap I think it's because if we don't find something to swapout we never return from swap_out(). I think we should simply return 1 even when unmapping page/swap cache pages (if the reference count of the page is equal 1, and that means the only refernce belongs to the page cache and so the next shrink_mmap can do progress in freeing memory). I'll do some test soon.
Andrea Arcangeli
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