From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.gmx.net (mout.gmx.net [212.227.15.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 488D43B2A4; Sat, 16 Oct 2021 06:29:04 -0400 (EDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=gmx.net; s=badeba3b8450; t=1634380142; bh=Lgp4NtRJsMAeSgks+FmSdBP/7VhMCB5uRjgLLVHo1hE=; h=X-UI-Sender-Class:Subject:From:In-Reply-To:Date:Cc:References:To; b=ir8k4t13GepC5fUTyKvKKyb59hNChtSDMj5mrbbzm9qiB/MfZfb92ZZsb72C+JIEf QqtPQpBqsoA8LhmkN3OPnKyKb9F1rRBkReS6XdYc6ZYPdrWsnJoeRNl+x/I0JfbCPe kKfCzq8R0gfPsgLNaL+xwRJstjLY8JZKP+4PoyEE= X-UI-Sender-Class: 01bb95c1-4bf8-414a-932a-4f6e2808ef9c Received: from [192.168.42.229] ([95.116.180.43]) by mail.gmx.net (mrgmx005 [212.227.17.190]) with ESMTPSA (Nemesis) id 1Mqb1W-1n6Kqs1Kcq-00me01; Sat, 16 Oct 2021 12:29:02 +0200 Content-Type: text/plain; charset=us-ascii Mime-Version: 1.0 (Mac OS X Mail 13.4 \(3608.120.23.2.7\)) From: Sebastian Moeller In-Reply-To: Date: Sat, 16 Oct 2021 12:29:01 +0200 Cc: =?utf-8?Q?Dave_T=C3=A4ht?= , Cake List , ECN-Sane Content-Transfer-Encoding: quoted-printable Message-Id: <1FCB2CB8-CFCB-49D4-9274-3CA6398ECB46@gmx.de> References: <87sfx31dt5.fsf@toke.dk> <87pms71cmr.fsf@toke.dk> <95231AF9-DCCA-4D41-9BF4-8F55307F45F6@gmail.com> <1F8C74DF-1384-4F72-904A-8293369DE95D@gmx.de> To: Jonathan Morton X-Mailer: Apple Mail (2.3608.120.23.2.7) X-Provags-ID: V03:K1:ucxxZLdyEAij30c/pNB4PgDrOgmuYH4vqHASNMcFt2fBXtQsjh1 Q6O3ZuNxEG7EAdY2mlm2nmozfF765BfBUiHahqXKQ9yW03k8jG6F9Jukyx+uSUv4bqengvm k8h0tBjQ+Q1H7ELHZ95Tfrrc+wMyI9y6O44HDScyJWM/3C4V/3bz5KNatl8Dzenrp5yVvLU PWTqVFNmVFcaTGfxg/Ujw== X-Spam-Flag: NO X-UI-Out-Filterresults: notjunk:1;V03:K0:F5RlIE47PY8=:eRCOAKY6L83YG3qokCzwRO mjNbEx8oDY/fvqdUWzbHObAqyDOSBuI04BJy1hRD+4DgFqZ034elX17uGyBwd2VYHmshPLPUY rCC6B5t17ZOnOTSACAAIMg/WXYxwHniSDuveLIpTxw+eLNwLzoWfgjwbj9aPQGJzleuXOv3xv XPSO8RwlfE6IDboqQS7zVFcM1GkN6FgGcLO3CRMW+UqOjMfYn+Hno4PEWhnLYpCUPLqbE4lm/ l6dIa8ztia+H/t7lQK7P91YQvw1zklhn3DCT3mpgPPIdDS6bVZjrmKdT2Azdi+R+o9u7dFEGf LpOWWvvOjTZV01GcuQYyTQ0FnVHYKGCqUI5RsILMP/PBgo9pRHmdpKObF57/h0EyOFmA+oUja TSlnUEh/iHDRxSmparHUISsYduDSYW5h+js1OJYD1K87I9f1I3UBQCx1FBzlwwKiVWT0YURvP +jU8/TK1RiEPq8mLRdyNziu//JawSzCY4sZTIFsJ2mJWZEOU8T5foL8/vmH8MzhHrbq6RAPJX CLxubxhjSaAVB16D/+sLJAEmA+vlhSJgvMGJC4l/JHulVuSyJj5npszAxGhKbDTF4Dt9vwy+M h50OsUkp48/Tqo+sNy3JIsZZkhDBAft9wWoDl5MXjF23a6bsvcG+Wc6KmlQtOKkSy5f78ocQ9 UIpXaOZLBGrgzzpIsBQhqN12fQGjEOtOupgBW9S0UMli/qO8nkIBW5RKSGxGePd/yYrHULX5s 39qFvpdetZ0GNJwgmlWORCTzFx1y82p0NTozEsU2ETOvkrF9bvPusYH7a1ZTnhyG0fudODZWt XmmqJWGyUdtLsGFFgPVkPPfx/1J/DJYLZVdgidckes5dfpd2rrOonlH5L0oswv5ZBg/LxgWd/ nyL3Zg9AGUViK4OKzhfUz9frCJXQhQARpuq5/RWrj7jjQVz+kC3t812p2uRpuaH6fLKoJRw8T oF49cv6QbS5OWpmB4cnBPN3JBd+M4n/OSheaiCG26/XzJH6WdYH0v7rbgxZstjvn6OwemuReT iYi5F8vmILyJA0OXBlDetYt8yGrGSQbGnOSadTnGQCTR/Pi9vF1oivj19GMi48xPPgNo14ds7 4VRRfi30A96cGQ= Subject: Re: [Ecn-sane] [Cake] l4s kernel submission X-BeenThere: ecn-sane@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: Discussion of explicit congestion notification's impact on the Internet List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Oct 2021 10:29:04 -0000 > On Oct 16, 2021, at 10:54, Jonathan Morton = wrote: >=20 >> On 16 Oct, 2021, at 11:38 am, Sebastian Moeller = wrote: >>=20 >> I also think that some one subscribed should weight in on the exempt = one packet from marking, especially in the light of GRO/GSO. >=20 > I do have some experience with this from Cake, but Cake has the = distinct benefit of (usually) knowing what the dequeue rate is, without = having to estimate it. Without that knowledge, I'm not sure it's = profitable to guess - except to specifically avoid tail *loss*, which is = not at all the same as *marking* the last packet. >=20 > - Jonathan Morton Yes, in SQM/cake we opted for making the target >=3D 1.5 times the = transmission time of a full sized packet, I think that is the correct = solution for slow links, but if one goes the exempt one packet from = marking this requires GSO-splitting at least n slow links, no? Regards Sebastian=