Question : Problem: Gigabit ethernet slow performance

Hello,

I'm trying to setup a NAS box and i'm experiecing slow performance. Here is my setup

Dell 2950 running debian etch attached to a 24port Gigabit HP Procurve Switch
PC Quad Core phenom with Ubuntu 8.04 attach to the same switch with on board pcie lan adapter (Realtek 8111/8168B)
I was using cat5e patch cords but change them to cat6 just in case.

Using iperf i get a throughput of 936-940Mbits/sec. This being very close or confirming the theoretical 1000Mbits/sec.

I've also tried Ixia testesting software giving me simular results.

When i do a file transfer, 700MB iso file, i get about 28-30 MB/sec. I say that this is a least half of what i was expecting. What is max MB/sec that someone could get? What should i check or change so i can have decent file transfers.

I measured the file transfer using ftp (2 programs) and rcp.

Thank you
Teo

Answer : Problem: Gigabit ethernet slow performance

Take a look at your HP switch ports - any errors?  If so, check duplex.