From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-it1-x141.google.com (mail-it1-x141.google.com [IPv6:2607:f8b0:4864:20::141]) (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 F2FEA3BA8E for ; Sun, 10 Feb 2019 07:24:52 -0500 (EST) Received: by mail-it1-x141.google.com with SMTP id h193so19766303ita.5 for ; Sun, 10 Feb 2019 04:24:52 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=2B+kNbvZaYxeT13psHv9aC7B22BCXhAJqCMSI1H3grw=; b=ejQ9tY7bEAPTCM2qQoCSL1y7SFqCL9medtC8wf0L/7u3Sz9owh9wCSF/Dakz76MUL1 /fTJlLkLT3AUweOVwThvj24Rph9dYl00kLombyqDPN9GaTqM0pgUUScqcF/3YMfQJRbm msWkTJ19DceVFIWUfTu1xHmVWaaGwePseycGYSfudW9Q3ysRdRxZfcZxJLEWuCQWaGan ZERZIUjU3XBEhTyc/usB1KzgNAfxtUaYC3adb67PRMDRvjaUU5uF3h/BtR42MT9FJ7Y7 5Gt0OgumbXP7fHLG0GtSsFjmP0wAP2T5QtVAtwD8tMSXo7+tIvt6T/jcsn1CQl1rOvM2 yHxg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=2B+kNbvZaYxeT13psHv9aC7B22BCXhAJqCMSI1H3grw=; b=UvCK6BqSEdVzsBnKyDZBmjC9xAmZn4X7RqWoyv30XSSYzsXiuL+TCKBvEA4RuHRKuZ GSfC++RJ8eeHLQVkVUR7G6iFt0++BUVaerIRIFj6GA6QrnhbYVr2X9XUZk0ty71VONyV ox+LPjzwobfQ0U6pT7X2UmkN/5XQE/pMWsQ+pfB/9jhX5tjKzGKaO8x+cMjMuKZYMPBI PIY3NHUfRV2ZtbzAS4e9MLNuN9ewGxUHmYFFBfKA17cvbfWpzVa14s8LM+mMINgjVtzp YsiEqL8MmgauvfMTIvYbTtc3gEMyVi9lcOhz73EekInDRDg+/sQdpGgHqxWUzex8Q0fd JLiw== X-Gm-Message-State: AHQUAubJbVLmctZCCIL7z7XamjZnqlERfR02+DIQzADP8HHNJkA67E5F vP9AH8c1s8kWbclZxZMpNvIp9Cg7rWgBVFLLv1+Ae3Fj X-Google-Smtp-Source: AHgI3IbjO4an67gDkD5PnUpHJ0g7nVW141Hlpaels23qgBqV4KIZM87oM9dxURRRyDt+xIc+jEmo/vNjpRnGxvENmFk= X-Received: by 2002:a5d:8896:: with SMTP id d22mr2150454ioo.249.1549801492288; Sun, 10 Feb 2019 04:24:52 -0800 (PST) MIME-Version: 1.0 From: Adrian Popescu Date: Sun, 10 Feb 2019 14:24:40 +0200 Message-ID: To: make-wifi-fast@lists.bufferbloat.net Content-Type: multipart/alternative; boundary="0000000000006b99e10581894741" Subject: [Make-wifi-fast] bloated ath10k 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: Sun, 10 Feb 2019 12:24:53 -0000 --0000000000006b99e10581894741 Content-Type: text/plain; charset="UTF-8" Hello, Wifi still seems to be bloated in openwrt. Some Windows clients and Android clients are still bloated. Machines connected via wires seem to experience bufferbloat which is orders of magnitude lower than wifi. ath9k seems to have good performance and low latency from what I can see. ath10k seems to be pretty bad. My attempts to use SQM and codel to reduce wifi bloat didn't seem to get me very far. 802.11ac seems more reliable and it seems to be more bloated. ath9k can go as low as 3-5 milliseconds. ath10k is usually in the 20-50 milliseconds range (or more, based on the number of stations). I usually test with a single client as I don't expect latency to improve with more clients. What can we do to improve the latency of wifi networks? What's the status of the air fairness patches? Can we do something to reduce the amount of buffering for ath10k? Could we do something on the AP side to reduce or mitigate bloat experienced by the stations? --0000000000006b99e10581894741 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
Hello,

Wifi still seems to b= e bloated in openwrt. Some Windows clients and Android clients are still bl= oated.

Machines connected via wires seem to ex= perience bufferbloat which is orders of magnitude lower than wifi. ath9k se= ems to have good performance and low latency from what I can see. ath10k se= ems to be pretty bad.

My attempts to use SQM and c= odel to reduce wifi bloat didn't seem to get me very far. 802.11ac seem= s more reliable and it seems to be more bloated. ath9k can go as low as 3-5= milliseconds. ath10k is usually in the 20-50 milliseconds range (or more, = based on the number of stations). I usually test with a single client as I = don't expect latency to improve with more clients.

What can we do to improve the latency of wifi networks? What'= s the status of the air fairness patches? Can we do something to reduce the= amount of buffering for ath10k?

Could we do somet= hing on the AP side to reduce or mitigate bloat experienced by the stations= ?

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