Why is copying data between my 2 computers VERY slow?

[shiphen]

Hi

Copying data on to my new Windows7 PC (from my old PC) seems EXTREMELY slow.
For example copying about 1.5GB of various data files takes over 50 minutes
(claimed speed c.500KB/sec)
However I have a new-ish "good quality" Router and the network adapters
for both my PCs claim to be running at "100Mbps/Full Duplex".

My configuration:
1. WindowsXP machine (3 years old)

MOTHERBOARD: Intel Pentium 4 D945GNTLR system board 3.2GHz
Network Adapter: Intel PROSet version 14.7.23.0
Adapter Speed setting: 100Mbps/Full Duplex (Autodetect)

2. Router: (1 month old)

Make: Thomson TG585 v7

3. Windows7 machine (1 week old)
Motherboard: Intel DP55WB MA TX
Processor: Intel Core I5 750 2.66GHz
Network Adapter: Intel 82578DC "Gigabit Network Connection"
Link speed status: 100Mbps/Full Duplex (manually set)

Why is it running so SLOWLY?
Do I need to do something to the router to speed it up?
Cheers

Ship

 

[chev65]

Have you tried Pinging the router from your PC to see if any packets are lost?

Test a TCP/IP configuration by using the ping command: TCP/IP

Have you tried to reset the router yet?

 

[RedBirdDad]

I just found something that might be of some help:

Slow Network File Copy issues in Windows 7 caused by Remote Differential Compression | Windows Reference

It relates to a compression feature in Windows 7. You could give that a try and let me know if it makes a difference.

 

[acurasd]

I dont know what slow is.. everything my house is gigabyte thats cause i network LAN parties....

umm umm see the thing is that even though you have 100 mb lan, it won't use it all of it.

your switch and router has some very big things about it too... this is what i did..

I have a switch that is 10/100/1000

everything is pluged into the switch and my router is on the outside.

i dont router anything through my routers LAN ports except LAN 1 goes into the switch to make it functions work

that way if the router goes down the switch is still up and running.


How did you set your system up..... we may have to open up some ports, check your firewall... umm someimes if you have antivirus and your transfering files, it problem is checking them while it goes out.. posiblity

 

[pparks1]

At 100 megabits, full duplex, the technical maximum is around 12.5MB/s. However, you never quite reach 100% efficiency...so you can usually bank on around 10MB/s. So, 1.5GB of data in a 100 megabit network would take around 2.5 minutes.

Are you getting faster speeds when you are accessing the Internet? Can you change out the network cables to see if you have a bad cable?

 

[Zidane24]

At 100 megabits, full duplex, the technical maximum is around 12.5MB/s. However, you never quite reach 100% efficiency...so you can usually bank on around 10MB/s. So, 1.5GB of data in a 100 megabit network would take around 2.5 minutes.

Are you getting faster speeds when you are accessing the Internet? Can you change out the network cables to see if you have a bad cable?

Thanks for that info

Seems like my school is giving me the max on the connection then as I can pull 10MB downloads

 

[shiphen]

Have you tried Pinging the router from your PC to see if any packets are lost?

Test a TCP/IP configuration by using the ping command: TCP/IP

Have you tried to reset the router yet?

Sorry I'm not completely sure how to test using Ping - (but it looks roughly okay to me).

Yes I have turned the router off (for 30 seconds).

 

[shiphen]

I just found something that might be of some help:

Slow Network File Copy issues in Windows 7 caused by Remote Differential Compression | Windows Reference

It relates to a compression feature in Windows 7. You could give that a try and let me know if it makes a difference.

Yes Remote Differential Compression was set on.
No, turning it off didnt make any difference.

 

[pparks1]

Go to a command line (Start, run, cmd).

ping -t x.x.x.x (where x.x.x.x) is the IP address of the other computer. Let it run for a minute or two.

CTRL-C to stop it.

You should be missing 0% packets. If you are missing more than this, you have an issue.

 

[chev65]

1.5GB took 50 minutes, that is pretty slow. I can usually do 20GB in about 15 minutes or so. I never had to do anything special to my network just to transfer files and the firewall ports are opened up automatically when you set up file sharing. Is there an echo in here LOL.

Have you tried Pinging the router from your PC to see if any packets are lost?

Test a TCP/IP configuration by using the ping command: TCP/IP

Have you tried to reset the router yet?

 

[pparks1]

I can usually do 20MB in about 15 minutes or so. I never had to do anything special to my network just to transfer files and the firewall ports are opened up automatically when you set up file sharing.

I assume that you meant 20GB in about 15 minutes. If you are moving 20GB in 15 minutes or so, you must be running faster than 100 megabits per second. Since that only supports about 9GB or so in 15 minutes.

 

[chev65]

Your right I lost my G. Yes it's 1000Mbps on the lan for me. 1000 on the WAN also but i'll never see close to that. His file transfer rate seems way too slow I agree.

 

[shiphen]

Are you getting faster speeds when you are accessing the Internet? Can you change out the network cables to see if you have a bad cable?

My internet connection feels fast - for an internet connection.
SpeedTest.net says my download speed is 7.32Mb/s (PING 72ms, Upload 0.37Mb/s)...

...But I am used to very much faster speeds when copying data locally.
(I'm guessing c.10MBytes/second or so?)

 

[pparks1]

Are you getting faster speeds when you are accessing the Internet? Can you change out the network cables to see if you have a bad cable?

My internet connection feels fast - for an internet connection.
SpeedTest.net says my download speed is 7.32Mb/s (PING 72ms, Upload 0.37Mb/s)...

...But I am used to very much faster speeds when copying data locally.
(I'm guessing c.10MBytes/second or so?)

Can you get roughtly the same speed test to the Internet from both computers?

You are right, you should certainly be getting around 10 megabytes per second on your local network.

 

[shiphen]

Wait a minute, could it be down to the wrong type of Ethernet cable?

 

[chev65]

Cat 5 should be fine for those speeds. I use cat 6 because supposed to be faster but no big diff really.

 

[pparks1]

Yes, a cat3 cable could technically be used...but is only rated for 10 megabits per second...which comes out to 125,000 bytes per second.

Cat 5 is certified to support 100 megabits per second over 100 meters (327 feet).
Cat 5e and 6 is certified to support gigabit per second over 100 meters (327 feet).

 

[acurasd]

Do you have any Firewlls or Antivirus running


Like i said ... these anti virus can be a pain in the *** and sometimes they lke to scan files as they leave and come in the network... so if yoursending files, and its scanning that could be a big slow down.

Look on the cable your using to connect...

What CAT does it say 3, 5, 5e, 6?

 

[RedBirdDad]

I just found something that might be of some help:

Slow Network File Copy issues in Windows 7 caused by Remote Differential Compression | Windows Reference

It relates to a compression feature in Windows 7. You could give that a try and let me know if it makes a difference.

Yes Remote Differential Compression was set on.
No, turning it off didnt make any difference.

A silly question on my part: Did you reboot after making the change?

 

[shiphen]

Okay I plugged in some different spare Ethernet cables - maybe a FEW% faster now... but it still feels *very* slow - gradually crawled up to about 660KB/s - I but I'm pretty sure I was getting about 10 times that when copying windows XP to windows XP...