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    SubjectRe: [2.1.130-3] Page cache DEFINATELY too persistant... feature?
    Hi,

    On Sat, 28 Nov 1998 14:44:06 +0100 (MET), R.E.Wolff@BitWizard.nl (Rogier
    Wolff) said:

    > I'm not sure that this is possible. We will need to "throttle at the
    > source" eventually. I can write an application that writes a file at
    > 50Mb per second (try "dd if=/dev/zero of=testfile"), and the disk is
    > never going to keep up with that.

    We do. The buffer cache grows with the low GFP_BUFFER priority, and
    even then grows only if the cache is within a certain limit and we have
    enough free space. Exhaust those limits and it starts recycling
    existing buffers, which is a natural at-source throttle for buffer
    writes.

    --Stephen

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