Slow networkperformance in current?

[Ståle Kristoffersen]

On 2007-07-20 at 08:10, Jack Vogel wrote:
> 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.

Then it must be something I'm doing wrong. It's not that I'm running such a
beast of a machine, but it should manage to fill a gigabitlink (and it did
a few months ago!).

Can you point out any tuning I might have detuned? 
-- 
Ståle Kristoffersen