Re: Some questions about Iperf
At 04:54 PM 12/6/2002 -0600, Kevin Gibbs wrote:
> > I guess what I am asking is, is Iperf only accurate for
> > unidirectional tests?
>
>No it should be accurate in the testing scenario that you propose. One
>thing to worry about it IO subsystems. Your built in NICs may not be able
>to push 200Mb of data.
>
>Kevin
What kind of I/O subsystem do I need to have to sustain 200Mbit/s of data?
The 32bit/33Mhz PCI bus can handle 132MB/s in theory.
Let's say I lose 20% of that to protocol overhead (I'm generalizing, I know
its not that great)
That still leaves me with 105MB/s of bus throughput.
One 10/100 onboard NIC running at 200Mbit/s is only needed 25MB/s of that
bus throughput.
So how is my I/O subsystem substandard here? I mean, the onboard NIC's are
Intel chips, and I can't say that I've ever run into any kind of serious
problems with them before.
Has anyone else on here tried this particular kind of test setup before?
I'm wide open to suggestions.
-Daniel Spisak