From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-la0-x22f.google.com (mail-la0-x22f.google.com [IPv6:2a00:1450:4010:c03::22f]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id F230121F185; Wed, 22 Apr 2015 11:53:13 -0700 (PDT) Received: by labbd9 with SMTP id bd9so182150999lab.2; Wed, 22 Apr 2015 11:53:11 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=content-type:mime-version:subject:from:in-reply-to:date:cc :content-transfer-encoding:message-id:references:to; bh=60N+hjDYVske14oVd4HTP+is5hOFbRb1Ko4UbvVRnps=; b=U917o9/j4qvml2ZIRq6Lc4UZqtafeZAgyA6FyBAv8n0dMsXM3tGGU+R3z5APXLlflO pq+Xf+lBIZxRSw1Cfz6AYK/dymMWMRgVbNfMBMlcH5HRT7znFWhyjdLU/GGjMxStLLkx iQqwlVk6Bp7uELVzI1e4ZcyYLyuvueheF6nPazNDKzgkNHZiUzQSWmfqRbhakyxjWBW1 +mVW0ayRX/syMZ33Snf6/b49s8gdSW91BrtIvmI2kGmZCbrcNP/ZOvXSORBMT3hdOcQ2 9Ja3iLetKk5LNjPkTeB9k/zfJECxAjAtj6vx83dtOPoTmsXjtKcgLzq74IHpmFzX5Ws2 BCww== X-Received: by 10.112.199.133 with SMTP id jk5mr26642126lbc.32.1429728791402; Wed, 22 Apr 2015 11:53:11 -0700 (PDT) Received: from bass.home.chromatix.fi (188-67-141-134.bb.dnainternet.fi. [188.67.141.134]) by mx.google.com with ESMTPSA id jr1sm1282769lbc.43.2015.04.22.11.53.03 (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 22 Apr 2015 11:53:10 -0700 (PDT) Content-Type: text/plain; charset=utf-8 Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2098\)) From: Jonathan Morton In-Reply-To: Date: Wed, 22 Apr 2015 21:52:54 +0300 Content-Transfer-Encoding: quoted-printable Message-Id: <926B60D5-224C-498A-8790-B7C7B441B052@gmail.com> References: To: Dave Taht X-Mailer: Apple Mail (2.2098) Cc: cake@lists.bufferbloat.net, bloat Subject: Re: [Bloat] [Cake] 450 flow tests X-BeenThere: bloat@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: General list for discussing Bufferbloat List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 22 Apr 2015 18:53:42 -0000 > On 22 Apr, 2015, at 18:59, Dave Taht wrote: >=20 > * Cake totally controls things Yay! And there really aren=E2=80=99t very many collisions there, so the = FQ logic is still mostly working as designed. > * As does cake flowblind, but less so That is surprising, actually. With shaping off, all packets having the = same DSCP and with FQ disabled, it should behave similarly to ns4_codel = (as I used codel4.h as a basis for codel5.h). That the three =E2=80=9Cway= =E2=80=9D stats counters remain at zero confirms that the FQ logic is = being completely bypassed (since if the hash was fixed at zero and the = FQ logic still ran, you=E2=80=99d see at least some misses and indirect = hits as well as a lot of collisions, since the set-associative logic = would still search the first 8 queues). But I didn=E2=80=99t notice an ns4_codel test run in your post. A = direct comparison might be apt, and then we can look at the differences = between ns4_codel and the other codels in isolation. - Jonathan Morton