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    SubjectRe: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f
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    On Mon, 2010-01-25 at 18:03 +0800, Lin Ming wrote:
    > Hi,
    >
    > The netperf lookback regression comes back again.
    > UDP stream test has ~50% regression with 2.6.33-rc1 compared to 2.6.32.
    >
    > Testing machine: Nehalem, 2 sockets, 4 cores, hyper thread, 4G mem
    > Server and client are bind to different physical cpu.
    >
    > taskset -c 15 ./netserver
    > taskset -c 0 ./netperf -t UDP_STREAM -l 60 -H 127.0.0.1 -i 50,3 -I 99,5
    > -- -P 12384,12888 -s 32768 -S 32768 -m 1024

    I cannot reproduce this on a dual socket nehalem system, I get current
    -linus to be about 10% faster than .32.

    (Had to drop the -i -I thingies, otherwise this took ages)



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