Messages in this thread | | | Date | Fri, 25 Apr 2008 17:51:49 +0900 | From | "Shigeo N" <> | Subject | Re: XTP for 2.6.25 |
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One host(sender) is 2.6.25, but the other(receiver) is 2.6.18. I will evaluate again after I upgrade it to 2.6.25.
Thanks
On Fri, Apr 25, 2008 at 5:23 PM, Ilpo Järvinen <ilpo.jarvinen@helsinki.fi> wrote: > On Fri, 25 Apr 2008, Shigeo N wrote: > > > case2) random delay > > > > In this case, add a fixed amount of delay + 10% random delay by > > command, "tc change dev eth0 root netem delay 100ms 10ms 25%". > > > > Here is the result. > > > > fixed delay UDP/TCP/XTP throghput > > --------------------------------------- > > 10ms 88/80/92 Mbps > > 30ms 88/51/91 Mbps > > 50ms 88/41/89 Mbps > > 70ms 88/28/80 Mbps > > 100ms 88/19/66 Mbps > > > > TCP's perfomance looks very poor when delay is long and variable. > > Where these results with 2.6.25 as well? ...John Heffner just couple of > days ago fixed reordering related problem in TCP (in case that netem > parametrization causes reordering), the fix is not even in 2.6.24.y, I > think... > > -- > i. >
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