> Secondly, TCP_WND controls how many bytes can be "in flight".  You also
> need to consider how many bytes are queued waiting to be sent.  This is
> controlled by TCP_SND_BUF (a value in bytes) and TCP_SND_QUEUELEN (a
> additional limit in "packet buffers" to stop all of them being used on
> the send queue leaving none for receive).  Assuming all your segments
> are full size and the same settings are used at both ends, the total
> number of segments required will be:
>
>    (TCP_WND + TCP_SND_BUF) / TCP_MSS



These are the settings I had:

TCP_MSS = 1460
TCP_WND = 16k
TCP_SND_BUF = 16k
TCP_SND_QUEUELEN = 16 * TCP_SND_BUF/TCP_MSS


Looks like I have a SND_QUEUELEN setting that just says don't worry about
this.

I will post an update after I do some more experiments. Thanks for the
reply.

-Siva
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