copy files from 1 pc to another takes so long

[faye]

Hi,

i have a PC that uses DLink 10/100 networkcard

and my Notebook use the similar build in 10/100 networking device.

is it normal if it takes 40minutes to transfer ~3G of files.? (2.6G for 41minutes)

 

[StraightPipe]

thats not bad
2.6GB/41min/60sec*100MB*100KB=10.56KB/s*8= 84.55kb/s your network is capable of 100.
(i think above math is correct)

I'm moving to gigabit to increase my speeds will have a cap of 1000! (although it probly wont every reach that speed, because your hard drives will never keep up.

I can usually move 700MB in 5:30.

 

[gunrunnerjohn]

Actually, your math is suspect! Let's figure that the typical 100mbit link really only gets around 50mbits of actual throughput, that's about 6 megabytes/second, he's actually getting about 1 megabyte/second. FWIW, I just tried his experiment with a 2gig GHOST file segment, and it took a little over 5 minutes. This was a copy between a 2.4ghz P4 and an AMD 1600+ machine, both with RealTek cheapo express on-board LAN ports. His speeds are WAY off.

 

[JackMDS]

Using Windows system a Good Network can transfer about 8MB/sec. (B=Byte).

That means about 480MB per minute. Or 6.5 minutes for 3GB.

Your system needs some work.

Could be the TCP parametrs.


Download DrTCP: <a target=new class=ftalternatingbarlinklarge href="http://www.dslre
ports.com/front/DRTCP021.exe">http://www.dslreports.com/front/DRTCP021.exe</a>

Run the program, it will show the current settings of TCP/IP parameters. Write them down.

You can change any variable that you want, click Apply, and reboot the computer, if no good; you can always change to your original values.

Start with:

MaxMTU - for DSL =1492 Cable=1500 DialUp=576

Tcp Receive - 255552

Window Scaling - Yes

Time Stamping - No

Selective Acks - Yes

Path MTU Discovery - Yes.

Black Hole - NO

Max Duplicate - 2

TTL - 64

 

[faye]

what is that thing do?

i can only see a cursor moving around.

 

[faye]

that is weird. how can i change the setting.

since i install my winxp, i haven't change any of the tcp setting.

My harddrive is a WD 8mb cache ata100, p3-980(desktop)
My notebook is a P4 M 1.3G don't know how fast the harddrive.

 

[buleyb]

how are they cabled together?

I'm curious if you are even running over a 100mbps link, or just saturating a 10mbps, ...

 

[faye]

through a rj45, not sure what the cable is called. it is a square head .look very similar to a phone jack.

 

[buleyb]

are they connected via one cable (crossover) or does it go through a hub/switch ?


and the connectors are called RJ45 modular plugs...if that helps for the future

 

[martind1]

isn't the theoretical throughput of 100bt system 12.5 mB/sec? 100mb / 8(bit in byte) = 12.5?

if that logic is correct then you get only 1.25 mB/sec over 10bt?


I think your network might be running at 10bt which of course woudl really slow down the connection. Check your cable, or even your hub/router lights and see waht the connection is. if its 10bt then figure out why, cause if you are transferring that much regularly you would almost NEED the upgrade(of 10bt to 100bt).

 

[azev]

I get around 10-11MB of transfer speed on my 100mbps network.
Yes, something is wrong with your setup. I second martind1, check you connection to see if you connected only at 10mbps.

 

[faye]

that .exe file is corrupted i believe.

what it does is running the cursor all over the screen non-stop.

i connect the PC to my notebook using a cable. No hub/switch.

 

[InlineFive]

Originally posted by: azev
I get around 10-11MB of transfer speed on my 100mbps network.
Yes, something is wrong with your setup. I second martind1, check you connection to see if you connected only at 10mbps.

Wait a minute, 100mbps divided by 8 to get MBps comes to 12.5MBps so you are acutually getting about your network max.

And Faye, I looked at your system specs and how slow is your notebook? It is possible from the looks of things that one of these (probably notebook) harddrive is slowing down transfer speeds.

 

[acemcmac]

If both systems have Firewire cards you can probably try a Firewire networking file transfer :evil:

 

[martind1]

Wait a minute, 100mbps divided by 8 to get MBps comes to 12.5MBps so you are acutually getting about your network max.

Ya thats what I said. He's not the one with the problem though.

 

[gunrunnerjohn]

In truth, anyone that gets file transfers that even approach the theoretical maximum throughput of an Ethernet connection needs to check their math. There is significant overhead to be accounted for, and once you pass the 80-85% range on an Ethernet link, collisions go up exponentially. Throughput over that range is mostly in your imagination.

 

[azev]

I know I get close to my max throughput transfer on my network. I test it using ftp, and I do move plenty of file between computer normally. When transfering file I normally get a starting speed of close to 12MBps, then the speed settle down to around 10MBps.

 

[martind1]

Actually on a simple netwrok with simple network 2 computers.

Its not unreasonable to peak up near 100%, PEAK.

anywas 10 mb is 80% or 12.5 mb so thats fine there, its within your range.

and doable

 

[faye]

my notebook is a very new notebook(2 weeks)

NEC Versa S900 P4 M 1.3G

i don't know about the harddrive. that's all the info i have.

Is my Notebook slowing it down?

 

[martind1]

does he even know if he is running 10bt or 100bt yet?

 

[buleyb]

any helpful lights on either of the NICs?

 

[faye]

hey, i don't know, that's y i ask.

 

[buleyb]

perhaps I should rephrase....are there any lights on the network card at all?

 

[martind1]

cant you look at the windows network and dial up properties. right click on your lan and tell us the speed (10 or 100)


thats 1 good place to start in addition to lights on the nic

 

[faye]

D-Link DE-530+ PCI Ethernet Adapter #2

this is the network card i use