Messages in this thread | | | Date | Sun, 26 Aug 2001 00:40:03 -0300 (BRST) | From | Rik van Riel <> | Subject | Re: [resent PATCH] Re: very slow parallel read performance |
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On Sat, 25 Aug 2001, John Stoffel wrote:
> Ummm... is this really more of an agreement that Daniel's used-once > patch is a good idea on a system. Keep a page around if it's used > once, but drop it quickly if only used once?
There's a very big difference, though. With use-once we'll also quickly drop the pages we have not yet used, that is, the pages we _are about to use_.
Drop-behind specifically drops the pages we have already used, giving better protection to the pages we are about to use.
http://linux-mm.org/wiki/moin.cgi/StreamingIo
regards,
Rik -- IA64: a worthy successor to i860.
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