From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x234.google.com (mail-oi0-x234.google.com [IPv6:2607:f8b0:4003:c06::234]) (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 7AE1E3B4AF for ; Mon, 18 Apr 2016 23:47:46 -0400 (EDT) Received: by mail-oi0-x234.google.com with SMTP id p188so4373637oih.2 for ; Mon, 18 Apr 2016 20:47:46 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to :content-transfer-encoding; bh=CT6TpBcSOE+062zOdGksdNlf1wIm6Bp/eKNJEu/jtyA=; b=icK3d1GfeVmObReGRe8bwYDrUMIw5htwcPV20hLFWcHbKy/VcT12nC2tvexjr6c+DS 7lsUjxRm+6nh3mkb1126fOJ8NHZghP7QbnA3+yAjNvwisAIUa/HFhHMneix/mAv58E5M DwVAkNkH4rAUP+Y5PyufPoGqjt2/+YyYPU+u7k7kusj9Bzd9MRYanyHuKR0fempDNP49 /oEUghMrTy+WfkFTDQp4XVywDFwz52rZterldhIpiQwVpuhYmlL19fhqLg+2b6yQZ6Tr t4PctjtnQTO10SekBCcF+d0GS0fxRMRHI7EbzFa9Nys3jy8eIcgnfYtxDlFYQwiDUPpE iqRA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:date:message-id:subject:from:to :content-transfer-encoding; bh=CT6TpBcSOE+062zOdGksdNlf1wIm6Bp/eKNJEu/jtyA=; b=GVsvAaYhdYMD+eJofpWrwR48oQ1qDxwCrGFEfUpjFXSonTvasMxw3J0pC/a0UuFycN bUfKWpruuI521bLH2dArbRdU2SKHqFom8NV+Avqd3/c5eFANOgapGS6BJW3cKObfqBkd 156QDGXwLP7FjGCKsohiybQN2vPnrm9S4+qsv/MU7ncWYwgCAx8Y6ZswXe+v05B1tUjk obUwwXavBs5WjfyGdNeVI9dQXqOpXiTidYV/AztWDI3wJO8W+gdJ0CnOWWDkY0tVKK7E fkeb998zW4UEz06b3A5P3/ixbV6qu4seysqGI8nFJ6RdBUWD0RJYyZB0iw83K0hv6yY6 npDQ== X-Gm-Message-State: AOPr4FUtCIODfsWrmZgqyq1v4vc+fuTe+ZSJxHHjgV7Ja7r0g29aikeS6NK3UxTBvyAyslPre6ZXV9qj1+vWzg== MIME-Version: 1.0 X-Received: by 10.157.4.174 with SMTP id 43mr221851otm.127.1461037658498; Mon, 18 Apr 2016 20:47:38 -0700 (PDT) Received: by 10.202.79.194 with HTTP; Mon, 18 Apr 2016 20:47:38 -0700 (PDT) Date: Mon, 18 Apr 2016 20:47:38 -0700 Message-ID: From: Dave Taht To: make-wifi-fast@lists.bufferbloat.net Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable Subject: [Make-wifi-fast] trouble on tid 5 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: Tue, 19 Apr 2016 03:47:46 -0000 I had been testing ath9k a bit with fq_codel a bit with patch tim supplied me, and I noticed an issue with the VI queue. Might be across more queues than that, but definately VI. examples see around packet number 4394, 8638, and like 139144 - in the cap: http://www.taht.net/~d/carnage.cap.gz the essential dialog: station: Here you go, frames 60 through 68. (IP x.y.19.15) AP: (IP x.y.18.1) I didn't get frames 78-123 station: Here you go, frames 60 through 68, at a different rate: AP no, you idiot! I didn't get frames 78-123 The cycle repeats XX times for a total of YY microsecs, before the driver gives up... I did not poke much further, thought I'd supply an aircap so folk could look at what one looked like. Me, all I wanted to do was fiddle with the Ack Policy field but haven't got to it yet. ... data generated via aircapping a rrul test between tim's fq_codel patch and a cerowrt box. The box seemingly misunderstanding the AP is tim's side.... ... The worst part of this is that' it all for acks. All we had to do to keep the tcp flow going was 1 ack - frame XX, and tcp would have handled it ok... --=20 Dave T=C3=A4ht Let's go make home routers and wifi faster! With better software! http://blog.cerowrt.org