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Slow file transfers in Windows

Chaotic42

Chaotic42

Lifer
I've got a shared network drive that I'm running some tests on. I want to use it as a file server and I'm getting some very disapointing results.

Computer A:
-Dual 2800MP
-Wireless Draft-n NIC @ 300 Mbps

Computer B:
-Intel E6600
-Wired NIC @ 1.0Gbps

Transfer rate via xcopy command:
1,601,557,712 bytes in 5 minutes 48.19 seconds for one file = 4.38658335 MBps

I measured this using the time command and xcopy. Any ideas? I was expecting a little more here. Maybe 10MB/s if not more.
 
Try doing the same file transfer using a wired ethernet connection on Computer A instead of the wireless. I wouldn't be at all surprised to find that the wireless connection itself is the bottleneck.
 
Wireless speeds are a gimmick....

I HAVE managed to stream video, 10Mb/s HD across N gear, but it's still wireless...which is for web surfing/email, not much else
 
Originally posted by: Fardringle
Try doing the same file transfer using a wired ethernet connection on Computer A instead of the wireless. I wouldn't be at all surprised to find that the wireless connection itself is the bottleneck.
Click to expand...

Yeah, it's about 10x faster over gigabit networking than with the 300Mb/s wireless connection. So why is it that it's *so* much slower than advertised?
 
Originally posted by: Chaotic42
Originally posted by: Fardringle
Try doing the same file transfer using a wired ethernet connection on Computer A instead of the wireless. I wouldn't be at all surprised to find that the wireless connection itself is the bottleneck.
Click to expand...

Yeah, it's about 10x faster over gigabit networking than with the 300Mb/s wireless connection. So why is it that it's *so* much slower than advertised?
Click to expand...

The wireless protocol itself eats up much of the actual bandwidth. Throw in any interferrence and it results in retransmissions/corrupt packets.

So in essence, wireless is slow. 802.11N is supposed to be better, but you can't control the airwaves like you can a wired connection. Wired is pristine and predictable.
 
Originally posted by: spidey07
So in essence, wireless is slow. 802.11N is supposed to be better, but you can't control the airwaves like you can a wired connection. Wired is pristine and predictable.
Click to expand...
Wired is an eyesore too. 😛

 
Originally posted by: Chaotic42
Originally posted by: spidey07
So in essence, wireless is slow. 802.11N is supposed to be better, but you can't control the airwaves like you can a wired connection. Wired is pristine and predictable.
Click to expand...
Wired is an eyesore too. 😛
Click to expand...

Not if you do it correctly. 😛
 
That does seem pretty low considering my 802.11g connection exceeds 2 MB/s on a regular basis. 802.11n stuff being only twice as fast would make me think there's definitely a problem... have you tried different channels?
 
Originally posted by: Jeff7181
That does seem pretty low considering my 802.11g connection exceeds 2 MB/s on a regular basis. 802.11n stuff being only twice as fast would make me think there's definitely a problem... have you tried different channels?
Click to expand...

Actually, twice as fast is exactly how dot N should be depending on the radio environment.

AT BEST, you'll get 3 times the throughput with N.

The 2.4 specturm is crowded and noisy as hell. It's a dead spectrum as far as I'm concerned.
 
I thought the expectation was about 1/3 of the advertised speed. Sounds about right with 802.11g for me... 1/3 x 54 Mbit = 18 Mbit / 8 = 2.25 MB/s.

So for a 300 Mbit Draft-N, that would work out to 12.5 MB/s.
 
Originally posted by: Jeff7181
I thought the expectation was about 1/3 of the advertised speed. Sounds about right with 802.11g for me... 1/3 x 54 Mbit = 18 Mbit / 8 = 2.25 MB/s.

So for a 300 Mbit Draft-N, that would work out to 12.5 MB/s.
Click to expand...

Public Enemy #1
:music:
Don't believe the hype.
Dont
Don't
Don't believe the hype.
:music:

If you have an absolutley perfectly clean, not another 2.4 device within 500 yards or are in a faraday cage then fine. You can't control the spectrum.
 
I wonder if it has anything to do with running in mixed mode? I know I picked up more consistent rates when I switched my router from mixed b/g to just g. /shrug Give that a try unless of course you need to support another type of wireless.
 
12.5MB/s is 100Mb/s wired etherenet speed...I doubt you will see that, even with draftn...again, seeing 10Mb/s over it would be great, but that is a relatively clean spectrum, true LOS, and less then about 50' (no walls or metal between) between router and card.
 
Originally posted by: nweaver
12.5MB/s is 100Mb/s wired etherenet speed...I doubt you will see that, even with draftn...again, seeing 10Mb/s over it would be great, but that is a relatively clean spectrum, true LOS, and less then about 50' (no walls or metal between) between router and card.
Click to expand...

The router and card are about a foot from each other right now. I'm testing the system out before I stuff in a closet to silently record TV.
 
Originally posted by: Chaotic42
Originally posted by: nweaver
12.5MB/s is 100Mb/s wired etherenet speed...I doubt you will see that, even with draftn...again, seeing 10Mb/s over it would be great, but that is a relatively clean spectrum, true LOS, and less then about 50' (no walls or metal between) between router and card.
Click to expand...

The router and card are about a foot from each other right now. I'm testing the system out before I stuff in a closet to silently record TV.
Click to expand...

Too close.
 
Originally posted by: spidey07
Originally posted by: Chaotic42
Originally posted by: nweaver
12.5MB/s is 100Mb/s wired etherenet speed...I doubt you will see that, even with draftn...again, seeing 10Mb/s over it would be great, but that is a relatively clean spectrum, true LOS, and less then about 50' (no walls or metal between) between router and card.
Click to expand...

The router and card are about a foot from each other right now. I'm testing the system out before I stuff in a closet to silently record TV.
Click to expand...

Too close.
Click to expand...


could be...move it to 4-6 feet.
 
Originally posted by: Chaotic42
Originally posted by: nweaver
could be...move it to 4-6 feet.
Click to expand...
Similar results.
Click to expand...

Well then you have your answer. Wireless is slow and you can't control it.

I don't mess with draft-N because it's not on my compass untill it's ratified.

If there is a way to force draft-n only then try that. But you're "300 Mbs" data rate is more like "75 Mbs at best, in a pure environment, with no other devices operating in the 2.4 Ghz range"

So half that or less in the real world.

If you want to maximize throughput then use UDP.
 
Well, let me ask a stupid question. Is there a way to "shotgun" wireless connections to increase bandwidth? My concern is that I'm going to have some large files going on here. Ideally I'd like to stream the video files either via remote desktop or some other method.
 
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