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[daskino]

I have pretty much tried every tutorial in here, but i get get transfer speeds on the local wlan between the Dir-655 and the DWA-547 above 2,3 MB/s or 18,9 mbps. It that ok or is it tooo low?

Physical location of the DWA-547 Client is upstairs, i am running a C2D 6400 with Samsung F1 disks and plenty of RAM.

The Dir-655 is just downstairs in the living room.

I have also tried with my 650N wirelss PCcard on a lenovo n100 C2D laptop, still i only get the max of 2 MB/s and more often aorund 1,3 MB/S.

I have disabled WPS, QoS, WISH and I have tried both 20 mhz and only N and N and g settings on the router.

I am running 1.32 rev A3 on the DIR-655, both netcards are running latest driver.

[daskino]

btw I am running only win xp sp3 on the clients. I am testing by looking at Teracopy and coping a avi 700 mb file form on pc to the other. I have also tried ftp but same speed there. I HAve set the channel to 6 steady.

[daskino]

ANd, I have disabled all security, now WEP, no WPA

[lotacus]

Wireless file transfer speeds seem to be in that range. Your wireless throughput with 3Mb is about 24Mbit.

I am not sure at what percent is the usual overhead associated with the wireless signals since i'm not a dlink engineer, and no one has been forthcoming to answer an old question on how it's related to the dlinks switching capability.

I am just going to go on a whim here and say that it takes part of it's ~4Gb switching capability and most likely a portion dedicated to wireless so the swtich doesn't get bogged down when trying to handle traffic that may be using the gigabit ports.

24Mbit seems to probably be average, since it falls close to what I was seeing when trying to wirelessly stream HD content. Though in my case, I only saw a max of ~18Mbit throughput on a seemingly 300Mbit link before the content started to freeze beyond buffering.

I am not going to make any suggestions since I am sure you have exhausted all of them anyways. Well, ok, if you REALLY wanted to experiment, you could first see what other AP's are running in your area and what channel they are operating on. Hopefully you can find channel 1, 6 or 11 decently free. Downgrade to f/w 1.2 I believe, which then you will be able to force 40Mhz only, compromizing the "good neighbor" policy. If you wanted to go even furthar, you can break telecommunications/radio laws and flash the dlink with an international f/w and download the drivers for the card as well, and choose a higher channel than 11.

Otherwise, your just going to have to learn to co-exist with the shady wireless, or try a 5Ghz AP to see if that helps.

[kthaddock]

You must have in mind that 2,4GHz only fit ONE N-cannel.
40MHz -+20MHZ if you have any channel in that band you
likely have problem to get full speed.

For testing have your laptop/usb dongle 1mtr from router
and measure speed, then you have a good hint of your speed.


kthaddock

[daskino]

downgraded to 1.21EU, It is only 1.20NA where you can select 40 mhz. hmm and that suck because i want to be able to use shareport for harddrives.

but but, i just went op to 5 MB/s or 40 Mbps, after having downgraded.

but i only get that speed when i copy form one xp3 server to a win xp3 laptop. if i copy from the win xp3 server to the attached usb harddrive on the dlink 655, i only get less than 1 MB/s....

still could be fun to try out the old firmware 1.2 and the 40 mhz setting

[daskino]

hmm but since i can only get low speeds on Wifi to USB hard drive, i might as well try the 1.2o firmware without the share port functionality. but then again 40 mbps might just be good enough. Oddly when i try to transfer from a wired gigabit laptop to the dlink 655 usb hard drive, i only get speed of 3,3 MB/s. It seems like that the ethernet2USB data traffic is not that optimized on the dlink 655 or maybe the ram and CPU on the 655 just cant handle that kind of data traffic. same prob also often seen on media players and small NAS'es

[daskino]

Just a quick note, i am only getting speeds of 5 MB/s  between a wireless client and a wired client.

Wireless n client  to wireless n client , i still only get between 1,8 MB/s to 2,3 Mb/s

[lotacus]

right. and for shareport. I honestly don't think it's usb2.0 since it was never originally intended to support networked storage, only a stupid implimentation of Microsofts EZ Setup. which is why speeds to usb HDD are slow.

As for wireless. It's a big mystery.

[daskino]

just did a test of 40 mhz band, no big win there,

I went back to try out the new 1.33NA, and loo and behold the speed form wireless n to a cabled client is still around 5 MB/s, so i was mistaken, no gain in downgrading on that performance front.

Wireless still is the same and somewhat slow, but in my case there is no gain in downgrading.

[EddieZ]

Building structure (concrete seilings etc) can be quite a disturbing factor

[daskino]

yes indeed! however this apartment building i am living in, was built 150 years ago, and they only used brickstone and hay to insulate back in those days 

[EddieZ]

But it's still a wall and an obstruction.