On Apr 1, 2:43 am, use...@oakseed.demon.co.uk.invalid (James Taylor)
wrote:
> I've taken one typical HTTP stream and used WireShark's time/sequence
> graphing function in order to understand why so many packets arrive out
> of order. However, I'm not at all familiar with this kind of TCP
> performance analysis and I would love someone to me interpret the
> graph.

I find wireshark's time/sequence graphs really difficult to interpret.

The combination of tcptrace and xplot is far easier for me to read.
The documentation explaining time/sequence graphs is here:

http://tcptrace.org/manual/node12_mn.html

A quick glance at your usenet posting history suggests you're a mac
user. You'll need to install and run X11 from your install disks
before you can run xplot.

Then it's just a matter of:

1) capture your problem incident with wireshark (as you've done), save
it to a file
2) in the terminal: 'tcptrace -S <filename>
3) observe the tcptrace output, and the files it has created
4) xplot ?2?_tsg.xpl

alternatively, you could just upload the capture so we can all have a
look at it.

/chris