Network Speed issues on Fedora 12

[Roberto Ragusa]

alan wrote:
> I have a couple of systems with gigabit ethernet cards. If I copy a large 
> quantity of data to the machine I notice the data throughput start to fall 
> off after about 4-5 gigs. It keeps getting slower and slower the more data 
> that flows through the interface.

Try running

  iostat -k -x 1

on the machine during the entire test.
Have a look at the utilization rate of the disk (is it 100% or not?),
throughput in KiB/s, the CPU usage (system? user? waiting? idle?),
RAM used for caching (you need a "vmstat 1" in parallel for this).

-- 
   Roberto Ragusa    mail at robertoragusa.it