[ath9k-devel] Issues with ar5418

[Luis R. Rodriguez <lrodriguez@atheros.com>]

On Sat, Oct 18, 2008 at 01:01:21AM -0700, Benoit PAPILLAULT wrote:
> Hi Jacob,
> 
> I got similar results using WRT350N from Linksys instead of the Apple
> AP. I'm really wondering if 2.4GHz is the appropriate band for 802.11n
> since I got the same results with another 802.11n USB thing from Ralink
> and I heard nearby users complaining about no Internet access while I
> was doing my test.
> 
> In the 2.4GHz band, each channel is 5MHz apart and 40MHz means you are
> using 8 channels out of 11 simultaneously!
> 
> I'd like to know what other people think about this point?

If you can use 5 GHz I'd recommend it as there is less noise there
compared to 2.4 Ghz. You can also use HT20 on 2 GHz. Remember that
the original goal for 11n was to try to achieve 100 Mbps but we
obviously surpassed that. Another question to is how much throughput
do you really need.

If you want to make use of aggregation sujith today posted a patch
which enables it for ath9k. Check Linux-wireless mailing list for that.

Anyway -- regardless any throughput issues we have need to be addressed.
My feeling is we need to review locking on TX path a bit more carefully
on ath9k. I'm going to try to look into that today.

  Luis