What sort of performance do you get out of a GigE LAN?

[N2RJ]

I can get up to 800Mbps on server class hardware, but desktops (even new ones) drop as low as 300 Mbps. I guess this has to do with i/o performance more than anything.

It's not the cable, because I use Cat6 certified and tested to 550MHz.

What do you get?

[ae6ip]

Just short of 900mb/s on my home gig-e lan segment.

A lot less on the shared segment at work.

At those speeds, everything is a bottleneck, but the usual culprit in personal computers is the lan card.

[N2RJ]

Yeah my old P4 2.0GHz can barely do 300Mbps transferring disk to memory. Guess it's time for a new computer.

Windows file transfers are also slow as ass. The linux and BSD boxes are a lot better.

Using netgear card on one PC and Intel Pro/1000 on another. Guess the netgear card is worth exactly what I paid for it. :mrgreen:

[n2ize]

Yeah my old P4 2.0GHz can barely do 300Mbps transferring disk to memory. Guess it's time for a new computer.

Windows file transfers are also slow as ass. The linux and BSD boxes are a lot better.

Using netgear card on one PC and Intel Pro/1000 on another. Guess the netgear card is worth exactly what I paid for it. :mrgreen:

I've got a nice (cheap) netgear ethernet switch and I finally determined that it is an RF NIGHTMARE. That lousy switch kicks out a ton of noise across wide swaths of the MW and HF spectrum from the AM broadcast band up into 10 meters. It's worst as you move down in frequency and it's at its worst right where I usually like to operate, around 3880-3885.

I know, it's probably the switching power supply in the wall wart that comes with the thing. The thing is what to do about it. I could try getting rid of the switching supply and replace it with a dc supply of the correct voltage. I could try getting a whole new switch or, yank the switch and put back the old hub that I was using.

[N2RJ]

I've used cheap switches off and on for portable ops (field day) with no problem. But by "cheap" I mean DLink.