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Poor Network Performance on W 2003 Server w/ dual 2.6 Ghz

L

lasergecko

Senior member
Running Windows 2003 Server on a dual 2.6 Ghz Dell server, I have the gigabit ethernet adapter connected to gigabit switch. When I transfer files back and forth, it seems very slow for such a powerful machine.

The server is set to the role of a file server so I don't understand why things are so slow.

Any ideas?

 
try to measure the data transfer speed using a program, Look@LAN comes to mind, not sure if it does that though.
 
Does the target system have gigabit as well as the server, or just 100Mbit? If it's 100Mbit, expect 100Mbit-style throughput. If everything has gigabit and jumbo-frames support, then enabling JF may put a little kick into it.

Also realize that the PCI bus on a standard PC peaks around 120MB/sec, so it could conceivably end up as the bottleneck.
 
The server has both a gigabit and 100Mbps adapter. Only the gigabit adapter is attached to the network. The server is connected to a switch that has 2 gigabit ports and the rest are 100Mbps. The performance on the server seems slow when viewed with a 100Mbps connected machine. (It seems slow even compared to machines that are on a 100M network. I haven't run tests yet but that's what I've observed.)

Would I be able to get a good increase in performance by connecting the second (100M) adapter? Should I bridge the adapters?

Also, Where would I enable Jumbo frame support?

Thanks.
 
It kind of sounds like you are running half duplex. I have seen in the past that by trying to run gbit though cat 5 it will connect at 1gbs but drop the connection to half duplex. Are you using cat5e or cat6 cables for all the gbit systems?

If it is cat5e or cat 6 you may want to try hard setting the speed and duplex on the switch if it is manageable. The speed and duplex can also be hard set on most nics in the network properties. But if you cannot hard set both sides you should leave them both auto.
 
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