Re: Test configuration ?
On Sat, 7 Feb 2004, nirav jasapara wrote:
> I am working on measuring the bandwidth of a testbed. It consists of the
> following
>
> - 64 IBM machines each with 4 Intel 1000BT dual Ethernet cards ( 1 Gb RAM )
> - Cisco 6509 switch chassis with a supervisor blade and 6 blades of 48 1000bT
> ports each
That is quite the set-up you got going there. I hope that Cisco did not
sell you anything other than the Supervisor Engine 720, since the others
that fit that box will not support line speed on all those interfaces.
Granted that is _A LOT_ of data, and people generally don't need / get
line level speed.
> I want to measure the bandwidth when
> - two machines are directly connected ( crossover cable )
> - 4 ports on one machine with 1 port on 4 machines
> - same as the two above but with the cisco swith in between. ( maybe try
> sending traffic through different blades to check inter-blade bandwidth )
>
> I will be using iperf to perform all the bandwidth measurement tests. ( any
> other tool ?? )
Iperf will work in all the above scenarios. There are several other tools
out there, but I don't have any suggestions. To get the performance you
are looking for you will want to read some of the tuning guides listed at
the bottom of the Iperf project site http://dast.nlanr.net/Projects/Iperf
> Can anyone suggest the kind of test i should run / kind of data i should try
> sending / any similar experience / anything that will help .
Read the user docs for Iperf it has some of the tests you can run.
Kevin