Gigabit network not up to speed.

Xandos

Xandos

Xandos

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Joined
19 Aug 2006
Posts
596
Hello,

I have two computers with gigabit network cards, connected directly together with (I'm pretty sure) the right network cable for gigabit, cat6 or something, windows-2000sp4. Copying a file over the network, I seem to reach average speeds of 2 megabytes a second. I'm pretty sure this should be much quicker. I read some tweak guides on the net and changed tcpwindowsize, tcp13230 and some others, but that didn't seem to have an effect on the speed.

I don't really know networking that well, does anyone have any pointers or advice they might be able to share with me?

Thanks a lot for your time in reading
 
It could be the HDD causing the bottleneck, I know it is in my system when transfering files. My 120gb HDD is a good 4-5 years old now, and when transfering a single file at a time, my HDD maxes out at around 11% of a 1gigabit connection, when trying to transfer 4 files at a time it drops to around 4%.

If the HDD is the cause of the problem, then make sure nothing else trys to access it at the same time, or otherwise that will just slow the transfer down more.
 
One other thing to consider is that most motherboards with Gigabit networking cards will be offloading the traffic processing to the CPU since they won't have a full NIC hardware chipset.

Invariably these cards never seen anything close to wirespeed.
 
Thanks for the response.

I guess my hard drives are kinda old, 3 years or so, but I would have hoped that they'd transfer data at faster than 2 measly megabytes a second. I mean that's only 4 times faster than I can download from the web...

The boards are socket A Athlons, dual 2800mp and a2000xp - so the motherboards would be equivilently old technology. Are these simlpy just not up to scratch do you think?
 
You should still be getting higher performance than that. Download iperf and run a test between the two boxes.
 
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