Re: Slow speed with NFORCE2

Joerg Albert <[email protected]> Fri, 13 Aug 2004 23:06:56 +0200 (CEST)
Newsgroups gmane.linux.drivers.atmel-wlan
Message-ID <[email protected]>
Hi,

On Thu, 12 Aug 2004, adam weishaupt wrote:

> i tried to set "iwconfig wlan0 rate 11M" but seems to be as slow as bef=
or.
> only 380kb/s. speed is the same in both directions.

> Am Samstag, 7. August 2004 13:57 schrieb Chi-Thanh Christopher Nguyen:
> > Am Samstag, 7. August 2004 16:31 schrieb adam weishaupt:
> > > hi!
> > >
> > > i only get about 300kb/s if i copy files in ad-hoc mode. in windows=
 i get
> > > about 600kb/s. someone knows whats the problem ?
> >
> > In one direction only or in both directions? Does iwconfig wlanX rate=
 Y
> > (insert X and Y appropriately) have any effect?

Please describe your setup in more detail:
- Is the peer running the same OS for the Win and Linux test case?
- How do you copy and measure the throughput under Win and Linux, same
  application ?
- kb/s =3D kBit/s or kByte/s ??

I've never seen more that 520 KByte/s throughput with 802.11 devices, any
hidden compression in the Win setup? Try to copy large compressed files.
380 KByte/s is IMHO an average value for some 10+ m distance (or if
the channel is disturbed by another WLAN device, Bluetooth or ISM device)=
,
380 KBit/s =3D 48 KByte/s would be ways too small.

You may also try to check that you use the same RTS/CTS and fragmentation
threshold values for Windows and Linux.


/J=F6rg