[EMAIL PROTECTED] said:
> Something somewhere is buffering a few packets, and dropping the rest.
> When the transfer rate goes high enough and there's no physical
> interface to create delay, the buffer gets full and the majority of
> packets are discarded. However, no dropped counters rise on any of the
> interfaces, nor are any kernel messages printed from uml or the host.
>
> Or, there's a locking bug somewhere that stalls the transfer for a
> while every now and then. 

If either of these it true, you should be able to track it down by tcpdumping
both inside and outside the UML and looking at timestamps for a given packet
or seeing which interface is dropping packets.

                                Jeff



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