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Date:      Fri, 2 Dec 2011 10:50:52 +0800
From:      Adrian Chadd <adrian.chadd@gmail.com>
To:        =?ISO-8859-1?Q?Gustau_P=E9rez?= <gperez@entel.upc.edu>
Cc:        freebsd-wireless@freebsd.org
Subject:   Re: Big delays between an AR5416 AP and its clients
Message-ID:  <CAJ-Vmo=1KimWWEkV4gqEyFiNQRZTkK8okPBSfnc494iJbtLzsw@mail.gmail.com>
In-Reply-To: <4ED3B4D1.3020701@entel.upc.edu>
References:  <3d4d2d249836fafc6acd885693c02198@webmail.entel.upc.edu> <CAJ-Vmo=1k=oKP-vDUH=BLdyeVzGnQvNmJ6TwGcdQjwpgJWt52w@mail.gmail.com> <4ECFCDAB.1080407@entel.upc.edu> <CAJ-VmokQTpgxMo=gmj0LsYhD6t9mmoHXG_sbhZdFNW5_OSGbmg@mail.gmail.com> <a9d1d8f91deb80a89bed98c1ffdb23fd@webmail.entel.upc.edu> <CAJ-Vmo=P%2BWAArZ1Kidh947yHuftZTBwF=Vx5Kn36-LKtD4grPg@mail.gmail.com> <4ED3B4D1.3020701@entel.upc.edu>

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Hi,

I've taken a quick peek. There's nothing obviously wrong with that trace.

Can you please redo this with:

* 5 runs?
* 100 pings a second - ie, ping -i 0.01
* capture the output of athstats -i ath0 before and after each run, as
well as during a run
* let it run for say, 60 seconds at a time.

Also, once that's done, try it again with this:

wlandebug -i wlan0 +power +input +output +state +assoc +mlme

see if anything interesting pops up at the same time as your latency increases.

(then wlandebug -i wlan0 0 to disable it all.)

Thanks,


Adrian



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