Re: Experiencing very slow browsing at times (atheros wireless)

["Sepherosa Ziehau" <sepherosa@xxxxxxxxx>]

On 5/24/07, Petr Janda <elekktretterr@exemail.com.au> wrote:
> Sepherosa Ziehau wrote:
> > ifconfig ath0 media DS5
> >
> > to force TX at DSSS 5.5Mbps
> >
> > Please refer ifmedia(4) for more information.
> >
> > Best Regards,
> > sephe
> >
>
> with the net.wlan.0.debug sysctl, i get these messages every now and then:
>
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <895,1524>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <908,1527>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <979,2633>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1059,2877>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1061,2879>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1195,2924>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1280,2968>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1332,3221>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1380,3986>

All of the above lines are not normal

> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <1586,1586>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard frame, multicast echo
> [ath0:00:19:db:0a:39:e6] discard frame, multicast echo
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2545,2545>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard frame, multicast echo
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2661,2661>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2663,2663>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2672,2672>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2983,2983>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2989,2989>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <2993,2993>
> fragno <0,0> tid 0

This group is normal.

> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3044,3835>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3059,3841>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3063,3843>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3064,3843>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3119,3874>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard frame, multicast echo
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <3517,3797>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard frame, multicast echo
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <188,2048>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <189,2048>
> fragno <0,0> tid 0
> [ath0:00:19:db:0a:39:e6] discard duplicate frame, seqno <307,2073>
> fragno <0,0> tid 0

And this group is abnormal too.

I suspect something happened to your AP periodically.  How often did
above messages appear?

Best Regards,
sephe

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