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SubjectRe: XTP for 2.6.25
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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