[netperf-talk] SCTP slow start - can I see cwnd?

[Rick Jones]

Frank Schuster wrote:
> Hello,
> 
> I want to show the sctp slow start but currently it is not possible
> to see the cwnd value in netperf. My question is, do you know, where
> I can do changes to export the values to a file, or do you think it
> is impossible?

Well, *if* it were possible, it would be a very stack-specific and thus 
not terribly portable thing, retreiving cwnd for a connection.  And it 
would probably need to be done after every send into the socket or somesuch.

I suppose with access to the stack source, one could hack it to send 
cwnd to something - file, dmesg, console, whatever - periodically.

I might check to see if cwnd is part of any MIB and if the stack(s) you 
are using implement that MIB.

happy benchmarking,

rick jones