DragonFly bugs List (threaded) for 2007-05
DragonFly BSD
DragonFly bugs List (threaded) for 2007-05
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Re: Experiencing very slow browsing at times (atheros wireless)

From: "Sepherosa Ziehau" <sepherosa@xxxxxxxxx>
Date: Thu, 24 May 2007 23:27:19 +0800

On 5/24/07, Petr Janda <elekktretterr@exemail.com.au> wrote:
Sepherosa Ziehau wrote:
> Sepherosa Ziehau <sepherosa@gmail.com> added the comment:
> Does the "duplicate frame" log happen anytime?  If it does, then you
> can give me a log at anytime.
It happens everytime I try to browse websites, interestingly it seems
not to happen when i ping those sites.

http://www.punchyouremployer.com/files/dump80211.tgz (11mb)

and these 2 contain the wlan debug messages with timestamps:


http://www.punchyouremployer.com/files/messages.tgz (note the tar)

Haha, the AP is broken. Its does not use single TX seq (as required by 802.11-1999 R2003, same as 802.11e for non-Qos data and bcast mgt) for data and mgt packets. Your AP seems to use one TX seq for beacon (99% of mgt packets) and another TX seq for data. That also explains why using lower rate will have better result: number of retries is reduced and duplication detection is performed only on retried packets.

Please test following patch and see whether it makes the situation
better in 11g mode:

Best Regards,

Live Free or Die

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