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    >  > mm: critical shortage of bounce buffers.
    >
    > Indeed this message has been pestering me in all the recent .4-acx kernels when
    > the machine is under heavy FS pressure.
    >
    > In these kernels I observe a significative (5-10%) performance degradation as
    > soon as the FS cache fills up all the available memory, at this moment "kswapd"

    Its there to prove we had a problem

    > 2.4.2-acx and early 2.4.3-acx kernles were much better in this respect and a lot
    > more stable.

    Hit any 2.4 kernel pre 2.4.5 vanilla [maybe fixed] and you will break bigmem
    that way.
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