Slow networkperformance in current?

Jack Vogel jfvogel at gmail.com
Fri Jul 20 15:10:25 UTC 2007


On 7/20/07, Ståle Kristoffersen <staalebk at ifi.uio.no> wrote:
> On 2007-07-20 at 09:08, Vince wrote:
> > Silly as it might seem when did you last recompile the iperf port? I was
> > about to post a me too post yesterday, until I updated my system to use
> > the latest sched_ule at which point iperf froze my system completely,
> > recompiling the port fixed the freeze and the <100Mbit/sec on localhost.
> > I think it was compiled against the wrong threading library (been a
> > while since i last recompiled it.)
>
> Actually I just spotted this myself, when I recompiled I got in the range
> of 600Mbits/sec to localhost. However I do noot see the increase you see
> when running it multiple times. I still think 600Mbits/sec is a bit low.
>
> If I run it to a remote host I see the same numbers (around 600Mbits/sec)

I am actually quite impressed with the stack right now, with our new
Oplin hardware and the ixgbe driver I have 9.8 Gb/s pumping thru
it. Of course its all about adequate hardware, configuration, and
tuning.

Cheers,

Jack


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