From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-lj1-x236.google.com (mail-lj1-x236.google.com [IPv6:2a00:1450:4864:20::236]) (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 6597E3B29E for ; Sat, 25 Apr 2020 10:19:52 -0400 (EDT) Received: by mail-lj1-x236.google.com with SMTP id u6so12892533ljl.6 for ; Sat, 25 Apr 2020 07:19:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=8kw0fg8QPFOc7HCCXOFm31aVFwici+8kF+hRb7kNeQo=; b=RuM/zsrDu0D9ppLFnnCiprcOWLt+O2GgyQ5gxF62foOlfbssCKIrCUx3ozs0VRbWIh e/1ugH2EajwX8rr3r+OwRdedScystHTcY7w4bhaSG9mGNGoGgKXZ+0XRL4RuSYVZUoU8 74rtUDK78CDUIgzaZWojkAmHpRK+uTZSki8ghDK+2UvGujK6g1XTlVfYFpHtZL4deUI6 LfnLr7HXpDPC7+50CVOz8n8M9UmelVlcoe0QTG5Kp/3ql7CTiZWvwAFtO3qvMzAt+M75 TmtizkbQGbvQrsWacRlOE5PGuv5lpb6kNjA49EIgjlAq52EBK5gXBzsoZUTWj/4PZvIL wksA== 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=8kw0fg8QPFOc7HCCXOFm31aVFwici+8kF+hRb7kNeQo=; b=VNpiGf+kuTteY+eYu6eNSlrwAKmFGna7GhRwWAzYQ+ST8ZrWS0JY4LT7fWzkRuS9mJ bKOm3K0H9p7/KthFcudlj0woomOb+rg2dj18dIetROsvZ/CyTqlazCqZ6laS/9ASPtQG ucIds6zkad1tFVWtT3tx1JXEz6imP8F3TQhtAqK8QLIYgOsgV/DLAETk4GQn4qu+W/iv YW5yoUsFDeMMkj2gHp5QEkduWZ0waAsVr8aPY3FNodZ4kVuVDAOYzFPv3eCI90FTrnFp ItOeIa1gNCRYpH2S7A13FvnBrZes9Fr4QSN8drjj0J/nkScVTzB0Ya9i/JOikV5uEsSb S4rw== X-Gm-Message-State: AGi0PubAdkj13WrX8HxdxdYUSFMc+xMtsoSpyqOWIlJh1GvbsVOvQDi7 zXeqE1xmosNoYNLghw1EHfs= X-Google-Smtp-Source: APiQypIgSQLiG7VQNRaDugSiBOsr+woWoIxZxE0Hz4rj88BLgcoCgu1wy4++e43ZYR0DGW+rRl0PIQ== X-Received: by 2002:a2e:988f:: with SMTP id b15mr9413628ljj.232.1587824391378; Sat, 25 Apr 2020 07:19:51 -0700 (PDT) Received: from jonathartonsmbp.lan (83-245-235-192-nat-p.elisa-mobile.fi. [83.245.235.192]) by smtp.gmail.com with ESMTPSA id d13sm1714595ljc.14.2020.04.25.07.19.49 (version=TLS1_2 cipher=ECDHE-ECDSA-AES128-GCM-SHA256 bits=128/128); Sat, 25 Apr 2020 07:19:50 -0700 (PDT) Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 11.5 \(3445.9.1\)) From: Jonathan Morton In-Reply-To: <025E1E0E1D49D3C95FFD4035@[172.27.17.193]> Date: Sat, 25 Apr 2020 17:19:43 +0300 Cc: bloat@lists.bufferbloat.net Content-Transfer-Encoding: quoted-printable Message-Id: <03E39523-C125-4A03-A514-30CA4E361225@gmail.com> References: <431A84397F3D9C1EB097BCCE@[172.27.17.193]> <6F1F3C646A7DFD2CC8C9E79E@172.27.17.193> <0B51625096F92AF18CD397D9@[172.27.17.193]> <8f4566dd-def0-cd97-45db-577784f90efd@sewingwitch.com> <9FDDBB5C-68CF-45B1-85D8-3A7BD6CB9F31@gmail.com> <3D2F4A70BAB1774D1EFDC641@[172.27.17.193]> <025E1E0E1D49D3C95FFD4035@[172.27.17.193]> To: Kenneth Porter X-Mailer: Apple Mail (2.3445.9.1) Subject: Re: [Bloat] this explains speedtest stuff 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: Sat, 25 Apr 2020 14:19:52 -0000 > On 25 Apr, 2020, at 5:14 pm, Kenneth Porter = wrote: >=20 > I see "ecn" in the qdisc commands. No, not the qdisc (where ECN is enabled by default), but on the client. Linux: # sysctl net.ipv4.tcp_ecn=3D1 Windows: > netsh interface tcp set global ecncapability=3Denabled OSX: $ sudo sysctl -w net.inet.tcp.ecn_initiate_out=3D1 =20 $ sudo sysctl -w net.inet.tcp.ecn_negotiate_in=3D1 In Linux and OSX, to make the setting persist across reboots, edit = /etc/sysctl.conf. - Jonathan Morton=