Analysing traces for performance bottlenecks

Matt Cable wozz at
Tue Jul 15 22:08:08 UTC 2008

Kevin Oberman <oberman <at>> writes:

> tcptrace is old and pretty basic, but it can provide a LOT if
> information. Combined with xplot, the graphs often point to the exact
> nature of a TCP problem, but you need a really good understanding of TCP
> to figure anything out.

Wireshark also provides tcptrace-like graphs ("Statistics -> TCP Stream Graph ->
Time Sequence Graph (tcptrace)").  They're not quite as pretty, but are just as
effective at tracking down all sorts of TCP problems, provided, as Kevin said,
you have a really good understanding of how TCP behaves.

More information about the NANOG mailing list