From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x235.google.com (mail-wm0-x235.google.com [IPv6:2a00:1450:400c:c09::235]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 111303B29E for ; Fri, 27 Apr 2018 08:01:00 -0400 (EDT) Received: by mail-wm0-x235.google.com with SMTP id a137so1696300wme.1 for ; Fri, 27 Apr 2018 05:01:00 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=eventide.io; s=google; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=XXBciGZQtC9Kia35nkIkbr3lQI7CN9JvbeUo10mNn8E=; b=c641YjYYk+FEeFSsAjch3NIxpTB5DxvUXX55IB5BA8mvVDagu1c97cc9QCoN00Joue xw8hql10yBmWZJsgA2lnTeh4EPekj1HJSPUeCc7Kt6Rwab+CjEQ8C8TVOqrAmxwzHHhk JkzcEXRt7xBy0HHbFWoTTLzFqxcxOeDGSCGuRvXm4/E54Y7jCvwQ5yvWiBJTRnpNyQ/b fMEoZ4aMLgPGJaopyKXrowF0TAqD6Be1N0QrVJ72xrnaI9cCBpu1nkIwv6cqsu8/e+Hi cL6pURmpC+EcqOtVKYFGUhesF3NYiF4LkN3R7BKTWnXfWY0YAHznaR6ygsx0bvYsvZqw azmA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=XXBciGZQtC9Kia35nkIkbr3lQI7CN9JvbeUo10mNn8E=; b=QaaGDUt5iakDhtODiXuZ0r7iekkIOkMFfXkF2DReMChNEqDymfuDeBsF/voe5z9DBk gzyut6bqcF8cUriD19Uc1+nuAvZwIxpwsvj1BAYDCwn/rT2/ju7U++mOBIA9vB2INUQd f9BdqdL/RohZpITTRILCj0HuLA/Z1uJT5xHMmT6n8llc6RT6HWmN/KoiDEmmtln6npNa Ii79DENl8QYDhqRrkpjyO8PYbpbCpF01MMxZsgzIpW8591Y3/bJpKDUEO3RMtaERhQKB uuHa5kVvr8RoDqOS65UyXKFbTSJu0ulX2sU90ZWwrmrwWuyBMbjxpi+sEMbcOmYz/Xe5 gYKQ== X-Gm-Message-State: ALQs6tAAcqr2x4wRjfCh5P77f78ZhJp5k90Z9dkGxRqQ8iQGPXmlzm6c /w4T3DjLLIj7yTJyW+Pe/6T5Pcw5rso= X-Google-Smtp-Source: AB8JxZptnFH9IoG9k/unbN/fJPfr8kB7rqqj+B0KqwTNjsKLRHDlk3s3R1m2CYmZ+0gcu82nJ6Z+1g== X-Received: by 10.28.124.5 with SMTP id x5mr1141699wmc.7.1524830460111; Fri, 27 Apr 2018 05:01:00 -0700 (PDT) Received: from tron.luk.eventide.io (h-1169.lbcfree.net. [185.193.85.130]) by smtp.gmail.com with ESMTPSA id k23-v6sm1646100wrc.59.2018.04.27.05.00.59 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Fri, 27 Apr 2018 05:00:59 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 9.3 \(3124\)) From: Pete Heist In-Reply-To: Date: Fri, 27 Apr 2018 14:00:58 +0200 Cc: make-wifi-fast@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <88907755-919C-4D44-94C7-461C4F349E25@eventide.io> References: <66BDCA6E-D7C4-4E76-8591-8FDC35B09EA3@eventide.io> To: Valent Turkovic X-Mailer: Apple Mail (2.3124) Subject: Re: [Make-wifi-fast] mesh deployment with ath9k driver changes X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 27 Apr 2018 12:01:01 -0000 > On Apr 27, 2018, at 1:47 PM, Valent Turkovic = wrote: > If you see more than 5% of frame > re-transmissions you are having noticeable issues, if you see more > than 15% of frame re-transmissions your network is probably not > usable. An update from the ath9k stats Toke pointed out earlier in the thread on = our worst AP (one of two repeaters off one gateway, NLOS): root@Cabin_12:~# cat /sys/kernel/debug/ieee80211/phy0/ath9k/xmit BE BK VI VO AMPDUs Completed: 6801646 68748 3000 0 AMPDUs Retried: 1011622 8053 444 0 1011622 / 6801646 =3D 0.149 And our best AP (one repeater off one gateway, LOS): root@Cabin_28:~# cat /sys/kernel/debug/ieee80211/phy0/ath9k/xmit BE BK VI VO AMPDUs Completed: 23947083 118834 31390 0 AMPDUs Retried: 1166349 11402 130 0 1166349 / 23947083 =3D 0.049 We weren=E2=80=99t entirely sure of the exact meaning of the stats, but = 0.049 on one and 0.149 on the other are an indication, and it=E2=80=99s = clear what I need to do=E2=80=A6 :)