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    SubjectRe: Which is better at vm, and why? 2.2 or 2.4
    > Now, the great kernel hacker, ac, said that 2.2 is better at vm in low
    > memory situations than 2.4 is. Why is this? Why hasnt someone fixed the 2.4
    > code?

    not to slight TGKH AC, but he's also the 2.2 maintainer; perhaps there's
    some paternal protectiveness there ;)

    my test for VM is to compile a kernel on my crappy old BP6 with mem=64m;
    I use a dedicated partition with a fresh ext2, unpack the same source tree,
    make -j2 7 times, drop 1 outlier, and average:

    2.2.19: 584.462user 57.492system 385.112elapsed 166.5%CPU
    2.4.12: 582.318user 40.535system 337.093elapsed 184.5%CPU

    notice that elapsed is noticably faster even than the 1+17 second
    benefit to user and system times. Rik's VM seems to be slightly
    slower on this test. with 128M, there's much less diference for
    any of the versions (and I don't have the patience for <64M.)

    regards, mark hahn.

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