Discussion list for thrulay, a network testing tool

[Federico Montesino Pouzols <>]

Hi Peter,

During a thrulay TCP test you see reports like this:

#(ID) begin, s   end, s  Mb/s    RTT, ms: min  avg     max
 ( 0)    0.000    1.000   90.879    1.514   14.225   19.241
 ( 0)    1.000    2.000   91.800   10.098   14.215   18.521
 ( 0)    2.000    3.000   91.804   10.145   14.292   19.089
 ( 0)    3.000    4.000   91.819   10.117   14.326   19.085
#( 0)    0.000    4.000   91.575    1.514   14.265   19.241
#(**)    0.000    4.000   91.575    1.514   14.265   19.241

Each line specifies (three last numbers) minimum, average and maximum
RTT.

The RTT reported by thrulay is the difference between the sending
timestamp of blocks (the timestamp is written in the blocks the client
sends to the server) and the time a response header from the server
(that includes the original timestamp from the client) is received
back at the client.

These blocks are transmitted through TCP connections (unless you use
the -u option), so throughput and delay are regulated by TCP flow and
congestion control mechanisms.

The details of thrulay connections are explained in
doc/thrulay-protocol.txt.

HTH.