Date: Thu, 8 Sep 2011 09:00:18 +0200 From: Bernhard Schmidt <bschmidt@freebsd.org> To: Josh Paetzel <jpaetzel@freebsd.org> Cc: "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: T510 iwn and 9.0 Message-ID: <CAAgh0_ZsPao3VM9FE7Mus2v==69xmAdkYeDb-ZSvm84jZEnDCA@mail.gmail.com> In-Reply-To: <CAJ-VmonuaeQw=KhyZutEoRQFkNz%2B2=%2B4b3TAP1wUorLfJi_wSw@mail.gmail.com> References: <201109062237.00788.jpaetzel@freebsd.org> <CAAgh0_YOH9rSNCGsweF%2BcJB=3QfD%2BoWxCm252=DKd7hvEHE5Lw@mail.gmail.com> <248CA120-66D2-47C4-AFCB-716552D5AB9D@FreeBSD.org> <201109070907.55652.jpaetzel@freebsd.org> <CAJ-VmonuaeQw=KhyZutEoRQFkNz%2B2=%2B4b3TAP1wUorLfJi_wSw@mail.gmail.com>
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On Wed, Sep 7, 2011 at 18:10, Adrian Chadd <adrian.chadd@gmail.com> wrote: > On 8 September 2011 00:07, Josh Paetzel <jpaetzel@freebsd.org> wrote: >> On Wednesday 07 September 2011 07:27:05 Josh Paetzel wrote: >>> ifconfig wlan0 -ampdutx >> >> I've been associated to the wireless at work for about 30 minutes using = this >> parameter with no drops. =A0I'd say this has fixed it, as the drops I wa= s >> getting yesterday were every minutes or so and basically made it unusabl= e. Ok, thanks, so it indeed looks like a TX aggregation issue. Can I talk you into getting more debug info? wlandebug 0xffffffff sysctl dev.iwn.0.debug=3D0xffffffff That is indeed quite spammy, but I'm not yet sure what I'm looking for exac= tly.. TX aggregation is only started if there is certain amount of traffic, if you say it is within one minute, what kind of traffic was that? Just some web serving, email, or..? Also, I would be great if you have another device available to capture a dump of what's going on. The dump shouldn't get too large if it's only a minute. :) > Cool. Bernhard, didn't you mention the ampdu TX bitmap stuff needed > some surgery in if_iwn? Yeah, for reporting stats to the ratectl algo, which itself needs some bigger surgery obviously :) But I'm not convinced that this is related. -- Bernhard
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