From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm0-x229.google.com (mail-wm0-x229.google.com [IPv6:2a00:1450:400c:c09::229]) (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 566653BA8E for ; Sun, 26 Nov 2017 08:03:28 -0500 (EST) Received: by mail-wm0-x229.google.com with SMTP id x63so29780572wmf.4 for ; Sun, 26 Nov 2017 05:03:28 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=subject:to:references:from:message-id:date:user-agent:mime-version :in-reply-to:content-language:content-transfer-encoding; bh=oz492V9/cobBjIEDKmeqto+HcfpNiczwnQaDSAtftnI=; b=ne0yHv6b0h6QWlqRoZRg7wv0942cta6aFmJ9kvCDKAuw6gkpnYe6v7X4mk+E5vQOe9 Z8Vv3Zu9hT0Y1dEJk0J0ZKnsHdbAFF4zKDqjAvhp9TdQLoUWrGgRFxGkFNkzt8pY/8hv iFHaafQUXYbpcye4Wbs17gQI4Bg6HQ9pZcngVu+4tKigBSRLXJa+UZ7w0ybJ8cFafeCZ xHd0Hr/+wMmEdYHygKDZNMcEKRyGjLy1GBNN3vpSh66KJCfZohGK1QsIOyFoVrAybc6x ew6fxZvaq0So5EylwQMy2wdbovFopRsnZvY9im6souaI3n3NSO5SD4qkmge+NGkq8qlH OAJA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:subject:to:references:from:message-id:date :user-agent:mime-version:in-reply-to:content-language :content-transfer-encoding; bh=oz492V9/cobBjIEDKmeqto+HcfpNiczwnQaDSAtftnI=; b=Jx/Gi6kweZN4bJ/wW5UypYMT7Mo4pU3tiRp+3TltQwJ3xVbgMQj4Z7gKB/si0QaxiO Nai79gIT0QNEaKAeNkkbI3f/2ple8P1o91V0ojzqyu5QsTn3lChBDvO1JDUkl2GcSFT7 SrzSYwf9BwwFc9yk6SuZYSjXupIkMrq+6/V1RE/h31PN+sOt7w4giHCNR5oPWS+ijNNK oduaSanJIzkmtI4P4heKAWzFAQnJ0Myy1kwGavm1cK+1qZTgSWSUxZruRrvQF1L3lDW+ iPrl3nFLqDpSoBf0KXL9txQmEEKPr8gUHdconb6h0LSDmLZrpibfx97AXKkVBh7caMY4 zRgA== X-Gm-Message-State: AJaThX4pX4jhMckkrBWeUyqJVfy3QjuaZ1M/cSVxoZeeuqNqOIn8U+CJ pG+qd9fwZgmqIQhTpGqLcnllSuwr X-Google-Smtp-Source: AGs4zMb/OSgvLAdGsX7VumKavi/A/eAMD0O0UdH6L6DlKAdJtRoXDObu1SE3/DaTLA2Jov+a0NYjZg== X-Received: by 10.80.157.141 with SMTP id w13mr50366037ede.151.1511701406821; Sun, 26 Nov 2017 05:03:26 -0800 (PST) Received: from zotac.xperim.be (22.49-200-80.adsl-dyn.isp.belgacom.be. [80.200.49.22]) by smtp.gmail.com with ESMTPSA id w10sm17879475edj.11.2017.11.26.05.03.26 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Sun, 26 Nov 2017 05:03:26 -0800 (PST) Received: from [192.168.8.172] (unknown [192.168.8.172]) by zotac.xperim.be (Postfix) with ESMTPSA id 04695482191; Sun, 26 Nov 2017 14:03:25 +0100 (CET) To: bloat@lists.bufferbloat.net References: <20171124092021.DC01D40605C@ip-64-139-1-69.sjc.megapath.net> <4a37c330-cb03-23eb-f705-743c6cb30c15@gmail.com> <20171126115404.zz34d2ibo4yoyibf@sesse.net> From: Jan Ceuleers Message-ID: Date: Sun, 26 Nov 2017 14:03:24 +0100 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Thunderbird/52.4.0 MIME-Version: 1.0 In-Reply-To: <20171126115404.zz34d2ibo4yoyibf@sesse.net> Content-Type: text/plain; charset=utf-8 Content-Language: en-GB Content-Transfer-Encoding: 7bit Subject: Re: [Bloat] Steam In Home Streaming on ath9k wifi X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Nov 2017 13:03:28 -0000 On 26/11/17 12:54, Steinar H. Gunderson wrote: > It's not about the AP, it's about the client. (APs can detect extension > channel interference without doing a scan, although I don't know if you need > this fallback at all on 5 GHz.) You are absolutely right. I have disabled the scans and now the stats for the same test look like this: 100 packets transmitted, 100 received, 0% packet loss, time 99153ms rtt min/avg/max/mdev = 1.225/2.403/49.129/5.933 ms Disabling the scans needed to be done on the AP side though (in hostapd.conf): # If set non-zero, require stations to perform scans of overlapping # channels to test for stations which would be affected by 40 MHz traffic. # This parameter sets the interval in seconds between these scans. Setting this # to non-zero allows 2.4 GHz band AP to move dynamically to a 40 MHz channel if # no co-existence issues with neighboring devices are found. This was set to 10 when I did the first test. I have now reset it to 0 (the default) which results in the above improved stats. Thanks, Jan