From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-x22a.google.com (mail-wr0-x22a.google.com [IPv6:2a00:1450:400c:c0c::22a]) (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 ADB8D3B29E for ; Wed, 18 Apr 2018 01:43:19 -0400 (EDT) Received: by mail-wr0-x22a.google.com with SMTP id u4-v6so1183699wrg.10 for ; Tue, 17 Apr 2018 22:43:19 -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=+9vzpjDpGICwkxsVsY/74xKpSzIQNu1h6QupgWUkRqs=; b=DSUCKw1UInQ/LCrc0NRPSnBJp8Bg+57kjvEzt0PIHJP/6UMFJIfkvI0EBxZeouTsBK 0Dnq9sFxESP1z8dW+MzWSqMX2Hi2OdC8eIxU3RhMooti5AbRrrxHsJWfGwZvXBJ5zhwH LLRg7iLO9/tuVcc6hr0rHEC2QzyWl0WCPy3+NqbAF5QFdXvpJfB+13R9kbrj6yHMCRtP VShHSl3fEqwVd1YSVPtC6PLtaVLNMyXW1hqFW68Co0bGhRgHcqYqfkXqQqtNHy+C0YM5 GbolNI1Svz8+sfY8HZG1l677XNbN0BOpyLWASmEOgF1sPxCSQHNX0Tgc5iYbuI9X8SXF 0JMA== 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=+9vzpjDpGICwkxsVsY/74xKpSzIQNu1h6QupgWUkRqs=; b=YRmIX0iHYQnlKmVJiJ36/2ZKfEHZtVQ+t+Xi88kh5Rlgz0qH0oNvZFCxRsy0w0/0Xn fTFc68e86hLpI1XfY7LFajFrPAXZYkGaShAZN9OjBarczV+WyJZhtd6anYOFJJ/Rrvi5 y71m8mlNh3fltBqo/Sx7Eni9JN+n0ZndmEm/bdmrGnyOVYCLGwv1URe6NEVDXI5stjes vxfFXoKPenkr6BC+GjDU5bem5FrDMBwk70a9lp/txuSId8WSEDcVaAr7jYi8oOgqr36/ JaC+Jle7Jz1we2iLO+0Rp8KDOU+/5TKk6sAzqcv5xTrlZ2Lpzx7RfJGWcrr0j2ROogUF 3hFA== X-Gm-Message-State: ALQs6tD7/P60gKHIZOUFzatcSmZslmiFznjaj5I3yiwxsvn/dCQoDQNH OetxhjyMRIXB15/Qoz/1sGC41w== X-Google-Smtp-Source: AIpwx4//qr0UCwBih6MFKqWlCQH5vKr0dn2qjeQ8wWceGhOa7IS7rd/h6jgw/7h1BiOM23tonxLwJA== X-Received: by 10.80.165.9 with SMTP id y9mr1322678edb.105.1524030198157; Tue, 17 Apr 2018 22:43:18 -0700 (PDT) Received: from tron.lt2.drhleny.cz ([185.15.109.151]) by smtp.gmail.com with ESMTPSA id d17sm116367ede.65.2018.04.17.22.43.17 (version=TLS1 cipher=ECDHE-RSA-AES128-SHA bits=128/128); Tue, 17 Apr 2018 22:43:17 -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: <0B624E0E-BF6C-4201-B20A-F6B77740B225@gmail.com> Date: Wed, 18 Apr 2018 07:43:16 +0200 Cc: =?utf-8?Q?Toke_H=C3=B8iland-J=C3=B8rgensen?= , Cake List Content-Transfer-Encoding: quoted-printable Message-Id: <129AF371-272F-4462-9EAF-71C861164E4C@eventide.io> References: <20180416.110000.1863692416063182988.davem@davemloft.net> <87efjf5gne.fsf@toke.dk> <612F0368-751A-4127-B1F4-139FF5C3D315@eventide.io> <0B624E0E-BF6C-4201-B20A-F6B77740B225@gmail.com> To: Jonathan Morton X-Mailer: Apple Mail (2.3124) Subject: Re: [Cake] net-next is OPEN... X-BeenThere: cake@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Cake - FQ_codel the next generation List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 18 Apr 2018 05:43:19 -0000 I also think I saw this happen at lower bandwidths as well, when the CPU = wasn=E2=80=99t loaded. What I=E2=80=99ll do is re-test on the current = version I have at, say, 50Mbit (or to where load drops substantially), = then update to the head and test again, and let you know... Pete > On Apr 17, 2018, at 3:52 PM, Jonathan Morton = wrote: >=20 >> On 16 Apr, 2018, at 11:55 pm, Pete Heist wrote: >>=20 >> I remember that fairness behavior at low RTTs (< 20ms) needed to be = either improved or documented >=20 > The reason for the behaviour, IIRC, was that throughput dropped below = 100% when the latency target was reduced too much. Since then there has = been a small change which might improve it a little, so a retest would = be reasonable. >=20 > - Jonathan Morton >=20