RTT, SRTT

[Fernando Cela Diaz <fcela@ce.chalmers.se>]

Hi all,

Doing some experiments with the standard Tahoe TCP source I did a plot of
both RTT and SRTT. I noticed that rtt_ was scaled, and after taking a look
to tcp.cc, I got the graph I was looking for by shifting rtt_ as it is
done in TcpAgent::rtt_update

	set T_SRTT_BITS [$ttcp0 set T_SRTT_BITS]
	
	set unshifted_curr_rtt [$ttcp0 set rtt_]
        set curr_rtt [expr $unshifted_curr_rtt << $T_SRTT_BITS]

I have taken a look to the manual I have (April '99), but I haven't found
any reference to this, so I don't know if this is the right way to plot
the current rtt sample. 

Can anybody tell me if it is documented in any place? 

Thanks in advance,

/FCD

----------------------------------------------------------------------
Fernando Cela
email: fcela@ce.chalmers.se                     phone: +46 31 772 1709