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    SubjectRe: [PATCH] MM fix & improvement
    On 9 Jan 1999, Zlatko Calusic wrote:

    > OK, here it goes. Patch is unbelievably small, and improvement is
    > BIG.

    [Snip]

    > pre6 + MM cleanup (needed for swap cache hit rate)
    >
    > hogmem 100 3 - 10.75 MB/sec
    > 2 x hogmem 50 3 - 2.01 + 1.97 MB/sec (disk thrashing)
    > swap cache - add 194431 find 13315/194300 (6.9% hit rate)
    >
    > pre6 + MM cleanup + patch below
    >
    > hogmem 100 3 - 13.27 MB/sec
    > 2 x hogmem 50 3 - 6.15 + 5.77 MB/sec (perfect)
    > swap cache - add 175887 find 76003/237711 (32% hit rate)
    >
    > Notice how swap cache done it's job much better with changes applied!!!

    Looks REALLY nice...

    > Both tests were run in single user mode, after reboot, on 64MB
    > machine. Don't be disappointed if you get smaller numbers, I have two
    > swap partitions on different disks and transports (IDE + SCSI). :)

    Have you tried your patch on a low-memory machine and/or a low-capacity
    processor, ie a 386 with say 4 MB's of memory?!

    /David Weinehall
    _ _
    // David Weinehall <tao@acc.umu.se> /> Northern lights wander \\
    // Project MCA Linux hacker // Dance across the winter sky //
    \> http://www.acc.umu.se/~tao/ </ Full colour fire </


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