Date: Thu, 8 Sep 2011 06:51:50 -0700 From: Josh Paetzel <jpaetzel@FreeBSD.org> To: Bernhard Schmidt <bschmidt@freebsd.org> Cc: Josh Paetzel <jpaetzel@freebsd.org>, "freebsd-wireless@freebsd.org" <freebsd-wireless@freebsd.org> Subject: Re: T510 iwn and 9.0 Message-ID: <038BB269-7FC5-46B6-A7C0-80D42ACFC087@FreeBSD.org> In-Reply-To: <CAAgh0_ZsPao3VM9FE7Mus2v==69xmAdkYeDb-ZSvm84jZEnDCA@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> <CAAgh0_ZsPao3VM9FE7Mus2v==69xmAdkYeDb-ZSvm84jZEnDCA@mail.gmail.com>
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On Sep 8, 2011, at 12:00 AM, Bernhard Schmidt <bschmidt@freebsd.org> wrote: > 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 >>>=20 >>> I've been associated to the wireless at work for about 30 minutes using t= his >>> parameter with no drops. I'd say this has fixed it, as the drops I was >>> getting yesterday were every minutes or so and basically made it unusabl= e. >=20 > 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 exa= ctly.. >=20 Sure. I can do that.=20 > 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..? >=20 It's my desktop. Checking email, connected to an IRC server or three. SSH to= a few places. An NFS mount. Windows in vbox running vsphere client connecti= ng to an ESXi box and a web browser running.=20 > 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. :) >=20 I can set that up. The WAP is in bridged mode. I can mirror the switch port i= t's on and plug another system in to that port and get a dump.=20 I'll set this all up in a couple hours.=20 >> Cool. Bernhard, didn't you mention the ampdu TX bitmap stuff needed >> some surgery in if_iwn? >=20 > Yeah, for reporting stats to the ratectl algo, which itself needs some > bigger surgery obviously :) But I'm not convinced that this is > related. >=20 > -- > Bernhard Thanks, Josh=
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