Re: Slow network performance

[Tim Lind <trlind_(_at_)_computerborough_(_dot_)_com>]

Hi, I wanted to add to this discussion because I am having the same 
problem and spent alot of time trying to find the problem.

I was building a new file server for myself. Here are the specs:

   Openbsd 3.1, 80 gig hard drive, Pentium II 333, 128 Meg Ram, Asus 
P2L97 motherboard.  

When I installed it, and started to transfer files, I found that a 1.5 
meg file would take 15 seconds to copy. I was using SCP.
I am also running OpenBSD on my firewall and decided to try a file 
transfer there. The same file took 3 secs.  Both machines
are on the same network segment. My entire 4 machine network is attached 
to the same switch.  I suspected the problem might
be with my network card so I took it out of the firewall and tested. 
Same problem.  I swapped a few different cards and had the
same issue.  Finally, I decided to try a different OS. I installed 
Redhat Linux 7.2 and found the file transfer only took 3 secs.
Same hardware.  

I hope this helps. Maybe there is something that needs to be changed 
somewhere. I even recompiled the kernel.  However, my firewall is 
running a default install without having been recompiled. Seems the only 
difference (other than the hardware) is the version of BSD I'm
running.  

Thanks,

Tim

Necro wrote:

> > > OK, did it once again using binary mode. Seems to be slower now.
> > >      
>
>  
>
> > Make sure your switch/hub and your ethernet card are working in the 
> > same duplex mode.  Don't depend on the auto-detect algorithms of those 
> > devices, they just don't work most of the time.  Your ethernet card 
> > will detect full duplex, but the switch will think the device is in 
> > half (or vice-versa).
> >    
>
> Does not seem to be the problem. I tried it with full-duplex and
> half-duplex, but no difference. It was originally set to half-duplex,
> in full-duplex mode it is even slower (5 KB). Any other ideas?
>
> thanks
> Christof