Network Transfer rate


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I'm boggled as to why network transfer rate is sooo slow. I have 2 computers set up on a win 7 homegroup (both were using vista with same issue) all security measures are set up correctly for sharing. When i transfer one file from one computer to the other i get a max of maybe 800kb/sec.. which is complete BS, as i can reach 2mb/sec from the internet. Both are connected through a linksys router (WRT54GS with tomato firmware) Both are set up on wireless connections however wired had the same issue. So it is certainly not a wireless issue. What could be causing this, i never had issues when both machines were on XP, i was getting great speeds.

What can i do to fix this?

Also, I don't know much about my router or the settings so i'm not sure what, if any, settings are within the router that may be causing this.

Any help is GREATLY appreciated.

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I just disabled firewall on both computers.. and removed remote differential compression and restarted both.. and now it's maxing at about 750kb/sec. I don't get this, why is it so bloody slow.

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Hmm. I'm not sure what the problem could be. I am using a DLink DGL-4500 gigabit router and two computers hardwired to it. One is using Windows 7 build 7127 and the other has Vista SP2. When I transfer files between them, I get about 60MB/s. When I transfer files to my wireless laptop, I get about 4MB/sec. Wireless transfers have always been slow for me.

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strange problem, i know im not suffering from this issue because the other day i had two windows 7 computer hooked up and got about 20MB-30MB/s.

sorry im not really much help/well im not really anyhelp

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Hmm. I'm not sure what the problem could be. I am using a DLink DGL-4500 gigabit router and two computers hardwired to it. One is using Windows 7 build 7127 and the other has Vista SP2. When I transfer files between them, I get about 60MB/s. When I transfer files to my wireless laptop, I get about 4MB/sec. Wireless transfers have always been slow for me.

if you got Wireless-G which give 56Mb/s(equate about ~6MB/s max [which could bring it even slower if there are interferance/long distance latency etc] ) , that the most you would get from your laptop

while your desktop , 1 Gb/s(which is about 125MB/s )

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I dont have another router to test, i'm wondering if that's the problem. Does anyone know anything about routers, or enough to know any settings that i could change that might have an affect on this.

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I have my desktop & server connected to my D-Link DIR-655 at gigabit speed and my Macbook is wireless-N. Copying huge files between my desktop and server, I get speed of about 60Mb/sec but it can drop very low if I copy a bunch of small files. My Macbook is a little bit slower.

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I have a d-link g604T router here. Wired transfer speeds around the network are often a laughably slow 400k/sec. Wireless transfer speeds sink to speeds slower than I can get on our crappy 768k broadband connection.

I just put it down to having an old router.

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Have you tried changing your network cables? If not, get manufactured cables, and good ones. Also, have you tried connecting the two using a crossover cable and seeing if that helps by bypassing the router. It sounds to me as if you might have a bad cable or the router.

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Yea, we tried everything. If, on the network (we have 5 computers connected to it) we transfer a large file, over 1gig between 2 xp computers, we get speeds of around 2mb/sec. We have done this by taking the network cable from my 7x64 desktop and using it to connect one of the XP machines to the network..the cable is fine by the looks of it.

As soon as a vista or 7 pc is involved, it plummets.

I'm thinking the router isn't supported properly or is just too old. It has the latest firmware.

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Yea, we tried everything. If, on the network (we have 5 computers connected to it) we transfer a large file, over 1gig between 2 xp computers, we get speeds of around 2mb/sec.

As soon as a vista or 7 pc is involved, it plummets.

I'm thinking the router isn't supported properly or is just too old. It has the latest firmware.

Yes, I've seen posts on Windows 7 and Vista where the Routers firmware was causing transfer speed problems. Usually a firmware upgrade fixed the problem. However, on a legacy router you might be out of luck. Try the crossover cable to eliminate the possibility of the router and cables.

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Thanks :)

I'll leave it for now, we're changing broadband providers this week and getting a new router to boot. The one we have now has other issues, such as needing to be rebooted multiple times per day to allow us to use the internet!

I hate routers :(

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I dont have another router to test, i'm wondering if that's the problem. Does anyone know anything about routers, or enough to know any settings that i could change that might have an affect on this.

You can look for QoS settings on the router and disable them, especially things like traffic shaping.

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Thanks :)

I'll leave it for now, we're changing broadband providers this week and getting a new router to boot. The one we have now has other issues, such as needing to be rebooted multiple times per day to allow us to use the internet!

I hate routers :(

Don't you just love it when people come her looking for help and they leave out a crucial part of the problem.....

Your having problems with a piece of hardware that directly relaits to the problem. REPLACE THE HARDWARE...

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ok short of getting a new router, i'm at a loss... i upgraded tomato firmware, tried linksys firmware, set factory defaults.. same issue, as a matter of fact it's even slower.. i was getting maxed at around 550kb/sec with network transfer. I can't get both computer on a wired connection cause there is no way i can run a cable to one of the computers at the moment.. but i have tested both before on wired with vista and had the same issue. But xp was fine. So it's either an OS issue with vista/7 or a router issue... i have no idea what to do next.

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"1 Gb/s(which is about 125MB/s )"

No sorry not possible -- for starters your never going to see 1000Mbit, so you can not just /8 to get what your speed is.. Just like with 100mbit, you never actually see 100mbit on the wire.. Best you can hope for is 90 or so % of that -- I see say 912mbits/sec on the wire, etc. So /8 that and you get 900/8 = 112.5

Now keep in mind to be able to get that your HDD and cpu would also have to be able to support that speed, etc. etc.

Heres the thing -- you can say you got the same speeds with wire -- but I freaking doubt it, if you did you got something really wrong with your wired ;) Wireless is SHARED bandwidth -- only 1 device can really talk at any one time -- so with 2 wireless devices moving files to each other - you just cut the bandwidth in half out of the gate. Also its not 54Mbit -- that is pure raw bandwidth, there is lots of overhead with wireless -- best you might see with G is about 23Mbits/sec -- now /2 for your 2 clients.. Do you have any other wireless clients on the network -- they are going to be talking too, etc. so again wireless is SHARED bandwidth! Just like a hub - anyone talking takes away from the bandwidth available from all other clients. If you have any B clients on your G network -- your speeds are going to be lowered to B, etc.

Keep in mind as well that your wireless client might say its connected at 54, but what its transmit rate? There are lots of different levels of transmit.. Depending it could be for G, 1, 2, 5.5, 11, 6, 9, 12, 18, 24, 36, 48, 54.. So if your client is only transmitting at 11mbits -- your other client can only recv it at that rate.

There are lots and lots of factors that can limit your file transfer rate on wireless.. Moving files between 2 wireless clients is gong to cut the rate in half out of the gate.. So I would say the max you could see is about 23/2/8 or about 1.4375Mbytes/sec - you saying your seeing 800Kbytes is about right ;)

Sorry thats just the way it is..

You say XP was so much faster -- what speeds were you think you were seeing with XP wireless to wireless? Cuz Im sorry just do the math! Your not going to see anywhere close to 54/8 -- its just not possible.

Here is some good testing.

http://www.passmark.com/support/wireless_b...th_testing.html

post-14624-1243627286_thumb.jpg

That testing shows your RIGHT Were you would expect to be to be honest!

Now the tip about disable auto tuning can help on vista/w7 -- but I can tell you on my WIRED gig network between using vista or w7 and 2k3 and 2k8 speeds are just fine if you make some adjustments ;) autotuning for one, the vista stack has lots of improvements, and vista to vista supports SMB2 which again has lots of improvements over SMB.

I can do a robocopy (file copy) from 2k8 to w7 after adjustments -- and it just SCREAMS!!!

Here is a test I did the other day for another board

----------------------------------------------------------------------------

1 \\p4-28g\s$\iso\

100% New File 574.8 m test.iso

----------------------------------------------------------------------------

Total Copied Skipped Mismatch FAILED Extras

Dirs : 1 0 1 0 0 0

Files : 1 1 0 0 0 0

Bytes : 574.86 m 574.86 m 0 0 0 0

Times : 0:00:06 0:00:06 0:00:00 0:00:00

Speed : 96524256 Bytes/sec.

Speed : 5523.162 MegaBytes/min.

Ended : Tue May 26 19:19:50 2009

A almost 600MB file in 6 seconds - FREAKING SCREAMING!! So there is nothing wrong with Vista's stack -- now is possible it has some issues with your router switch -- sure autotuning, ipv6, etc. could be a problem,disable it - takes 2 seconds to do. If you feel the switch or wireless portion of your router is maybe a problem - as suggested use a wire and directly connect the machines. What I would suggest you do is grab IPERF, do some testing of what speeds your seeing on the wire or wireless. And then use robocopy to copy some files - since it reports actual time and speed for you vs looking at what the file copy dialog shows for the speed, etc.

Once you have your machines WIRED to the router -- do some tests of file copies with robocopy, and report the results. On a 100Mbit network you should be seeing around 9Mbytes/sec easy.

Also btw -- yes your going to see better speeds from the internet to 1 wireless client -- like I said going wireless to wireless cuts your speed in half out of the gate.

Edited by BudMan
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Thanks Budman, do you have any clue why, on the same network, copying between two xp machines can get around 2-3 mb a sec, while copying vista-7, vista-vista or vista-xp drops down to 300 - 800 kb a sec?

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Have you disabled auto tuning? Have you disabled IPv6? Autotuning seems to cause lots of issues for quite a few people -- to be honest I don't think it plays nice on local networks - more designed for wan connections "changing network conditions" And sure its possible some switches/accesspoints have issues with it.

I have turned it off and never seen any type of decrease in speeds ;) It takes 2 seconds to turn off, if you see worse speeds - then turn it back on ;)

Also I am not a fan of running protocols your not using - if your not actively using IPv6 - why have enabled, normally it should not cause any problems -- but again if not using it.. why have it on? For starters makes looking at the output of ipconfig more complicated ;)

BTW -- I find you saying you got 2-3Mbytes/sec xp to xp on the high side.. Where did you get this number? Is this you looking at the dialog as the file copies, or with an actual timed test.. Say using robocopy? Because 3MBytes/sec wireless to wireless on G seems too good to be true. See the chart I posted, were you using any type of Turbo speed client, etc. with your wireless, you know the 108mbit stuff, etc.??

Edited by BudMan
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IPv6 is disabled as well as autotuning :)

Nono, the 2-3 mb is over a wired connection. It's just the laptop on our network that is wireless, everything else is wired because the computers are too spread out to get a reliable connection using wireless, but even then, its just from the dialogue, I'm only bothered about rough guides really.

I just tried to copy an image file of server08 (from dreamspark before someone accuses me of piracy), and windows estimates that it is going at 300k a sec, wired to wired, from xp to 7 :( Some people have faster internet than that :(

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from XP to NT6.x you'll never get higher rates than 6 or 7MB/s because over a 100MBit LAN of SMB1. When I'm copying from Vista to Win7 I have 11.2MB/s on a 100MBit LAN, because of SMB2, which is awesome

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Yea, I never see those speeds from vista-vista or vista-7 or anything to xp. I don't expect to get that high because our house is huge and has long cables everywhere, but I still would like to know why vista and 7 have such slow transfer speeds :(

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