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    SubjectRe: [patch] adjustments to dirty memory thresholds
    On Tue, Aug 27, 2002 at 09:39:09PM -0700, Andrew Morton wrote:
    > These ratios are scaled so that as the highmem:lowmem ratio goes
    > beyond 4:1, the maximum amount of allowed dirty memory ceases to
    > increase. It is clamped at the amount of memory which a 4:1 machine
    > is allowed to use.

    This is disturbing. I suspect this is only going to raise poor memory
    utilization issues on highmem boxen. Of course, "f**k highmem" is such
    a common refrain these days so that's probably falling on deaf ears.
    AFAICT the OOM issues are largely a by-product of mempool allocations
    entering out_of_memory() when they have the perfectly reasonable
    alternative strategy of simply waiting for the mempool to refill.


    Cheers,
    Bill
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