Messages in this thread | | | Subject | Re: netperf ~50% regression with 2.6.33-rc1, bisect to 1b9508f | From | Peter Zijlstra <> | Date | Mon, 25 Jan 2010 15:03:49 +0100 |
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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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