Hi everyone,

I am having a problem with slow data transfers with both Samba and scp. I have gigabit NIC's on both all three machines that I am transferring to and from, connected to a gigabit switch. My data transfers under both smb and scp average around 21 MBit/s, (I am using nload to monitor transfer speeds).

The machines are configured as follows,

1) desktop

AMD Athlon 64 X2 6000+
6 gig Corsair memory
Realtek RTL8168C(P) gigabit NIC (on board)
3 X 160 gig SATA II configured in RAID 0
Fedora 10

2) Samba server

2 x Intel P4 Xeon
4 gig Samsung ecc ddr 266
Intel 82546EB gigabit NIC (on board)
2 x 500 gig ide in raid 1 on a 3ware 7410-4 controller
1 x 500 gig sata
CentOS 5.2

(yes, yes, I know about the drive, that's why I am doing the back up, so I can rebuild with 4 X 500 gig IDE in RAID 5)

3) dump server

2 x PIII 1000
4 gig ecc sdram
Realtek RTL8111 giabit NIC (PCI card)
700 gig jbod array
CentOS 5.3


Does anyone have any suggestions where I should start looking first?

Thanks

zog

Don't wanna talk you down but...

I've been trying to get a gigbit network at max speed for a long time now. Most of the time it just doesn't wanna go faster than 20 a 30 MB/s The fact that a motherboard has an onboard gb NIC sounds nice but it doesn't say much about the speed in reality.

I have tried various setups with different hardware. Onboard, PCI and PCI-e NIC's, with and without server or switch. The only time I had some nice results was when I connected two fairly new computers directly with a cross cable. It never has helped me to setup RAID configurations either.

But you can give it a try ;-)...

Few things that come to my mind:

- That PIII with that PCI NIC sounds like a huge bottle neck!
- I'n not sure but that XEON doesn't sound very fast either...
- Check your network cables. Some of the stuff you buy is 10/100MB specific! Check that all 8 wires are connected.
- I would test the speed between that AMD and the two others PC's to find out their individual speed.

goodluck and please let me know if you achieve any speed improvements!

Robbert