[rt2x00-users] Slow performance with rt2800pci / RT3090

[Helmut Schaa]

Hi,

Am Samstag, 18. Juni 2011 schrieb Dennis Martin Herbers:
> It seems I'm not the only one, another user has the same problem with a
> RT3092: http://comments.gmane.org/gmane.linux.debian.user/408295
> 
> I already tried using Ubuntu 11.10-daily with Linux 3.0rc3 and the newest
> firmware etc., all looks fine but the speed is capped at 25% at best. And
> now that rt2860sta has been dropped form the kernel (with Linux 3.0), I
> really need a solution for Ubuntu 11.10...
> 
> 2011/6/12 Dennis Martin Herbers <dennis.martin.herbers at googlemail.com>
> 
> > Hi everyone,
> >
> > so I've got a Lenovo Ideapad S205 with a Ralink RT3090. When I use the
> > rt2860sta staging driver from the kernel (that is removed with Linux 3.0), I
> > only have 54M rate and it disconnects from my university network from time
> > to time, so I'd like to switch to rt2x00. Well, it uses the rt2800pci driver
> > and even the rate seems to work up to 300M depending on how good the
> > strength is (often around 130M or so) and what's great is that it doesn't
> > disconnect at all in university, but the speed with this driver is not good
> > at all. I get pretty much precisely about 20% of what's possible. At home, I
> > get 70 KB/s where I get 350 KB/s with the other driver and at university
> > where network is slow anyways it is even worse with rt2800pci.

How do you measure the throughput?
TCP or UDP?
AP -> STA or STA -> AP?
both directions?

> > This is using
> > Ubuntu 11.04 and Fedora 15, both using both stock and fully-updated-from-git
> > to test, 32-bit.
> >
> > Any ideas?

Hmm, mind to post the output of 

cat /sys/kernel/debug/ieee80211/phyX/netdev:wlanX/stations/XX:XX:XX:XX:XX:XX/rc_stats

after transmitting some data?

Helmut