drcwf Posted July 30, 2003 Share Posted July 30, 2003 I have a 100MBit network but the transfer speed between Windows XP computers is only about 10MBit. I'm using TCP/IP as the default protocol with IPX support installed for certain programs that require it. I can't tell if its the network itself or just slow hard drive reads. The hard drives run at 4200-7200 rpms on 66-100 MHz buses. The network cards are D-Link 10/100 Fast Ethernet cards. I'm just wondering if any one knows any tweaks to increase the throughput. Link to comment Share on other sites More sharing options...
Jon Posted July 30, 2003 Share Posted July 30, 2003 Are you using Switches or Hubs? Link to comment Share on other sites More sharing options...
Fred Derf Veteran Posted July 30, 2003 Veteran Share Posted July 30, 2003 Remember that 100Mbits/s is a maximum bandwidth and not what you should expect. Actually if you are using a switch or if you have two computers connected directly with a cross-over cable and BOTH computers are sending and receiving data simultaneously then you would have a potential bandwidth of 200Mbits/second due to full duplexing. Also remember that 100Mbits/second is actually the same as 12.5MBytes/second. If you were able to transfer files at or around 10MBytes/second you should consider yourself lucky. Other than that you could go to Gigabit ethernet but don't expect a 10 fold increase there either. Link to comment Share on other sites More sharing options...
Keldyn Posted July 30, 2003 Share Posted July 30, 2003 moved to networking support Link to comment Share on other sites More sharing options...
+BudMan MVC Posted July 30, 2003 MVC Share Posted July 30, 2003 How do you know your getting 10Mbit? Most network devices today are 10/100 or even 10/100/1000 - just because your NIC and hub/switch is capable of 100, does not mean it will connect at that. Are you using atleast cat 5 cables? Cat 3 will only run at 10. Depending on your hub/switch or other Nic your connected to (if using xover) you may only be connected at 10? The networking tab in taskmanager in XP should show you your connection speed. If you believe you should be at 100, then check the setting on the NIC, make sure you hub/switch can run at 100, and that your cable can. As to getting better network util, you might try turning off enablesecuritysignature in HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\lanmanworkstation\parameters This seems to increase network utilization, have not done enough testing to be sure - but from a quick copy file, make the change copy file again - the graph in taskmanager did show an increase in the network util on the second copy, and it did take less time. And yes fred is correct a 100Mbit connection works out to about 12.5Mbytes/s - but you will not get that speed in real world. Link to comment Share on other sites More sharing options...
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