[Web10g-user] difference in curCWND and SlowStart

[mojgan ghasemi]

Hi,

I am a little bit confused about the SlowStart and CurCWND variables
exposed by web10G, version 2.0.7.

I have a connection that according to Web10G, never exists the SS, and its
SlowStart variable is 235, meaning that the CWND has been increased a total
of 235 times.

However, when I look at the packet traces of the connection using tcpdump,
I see more than 15K new ACKs being delieverd for this connection (even with
byte counting approach), which according to many RFCs such as 2581, each of
them must make the CWND to increase by one MSS. So why only increase CWND
235 times?

I'm not sure if Web10G is exposing the correct value or if there is
something I am missing. I'd really appreciate if  anyone has any hints on
why this could be happening and how I can verify the  correctness of either
of these values.


Thanks!
Mojgan Ghasemi
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