[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: A question about priorities



jamal wrote:
> Try, one:

Or, three, check if TC is indeed dropping outbound packets (ACKs) at
the receiver, and what the RX/TX stats in ifconfig say.

Other things to check:
 - duration of tests (must be >> TCP ramp-up time)
 - hidden priorities in program (e.g. alternate or randomize the order
   in which you check for write space after select())
 - TCP start order

You could also try to grab ttcp_atm from the latest linux-atm
distribution (the one on http://icawww1.epfl.ch/linux-atm/dist.html
still seem to be current) and try running two instances of it, with
different -S (toS) options. This would eliminate any bias introduced
by your tool, just in case.

- Werner

-- 
  _________________________________________________________________________
 / Werner Almesberger, ICA, EPFL, CH       werner.almesberger@ica.epfl.ch /
/_IN_N_032__Tel_+41_21_693_6621__Fax_+41_21_693_6610_____________________/