From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.toke.dk (mail.toke.dk [IPv6:2001:470:dc45:1000::1]) (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 653953B29E for ; Tue, 24 Apr 2018 07:45:58 -0400 (EDT) From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023; t=1524570357; bh=gTkhcHwMCbWKqyT/aUqbhfWKYbwY6L7bxfEH30QD1Zk=; h=From:To:Cc:Subject:In-Reply-To:References:Date:From; b=thAjdHBPCjGy+5mTTgCdYwmx4Bpde4f9dYep7TbezV11m3NwQXxmVZK0AzDbhnWom zjChWN58Ewm7+ZuQQDHIKXqS0zvVqNLrmNWgCFLUbB0v55pTqr8qZ4/1eIoP5RlD/y qyRa0kmcVyLUlYPykxkepiKnt3gRrSk/XSAPxMkNf+Xpkc8KQVlQ6DFHL72ZTNgJSa 4HQdNS2mRw6TqHVs9znroRqAkAtY2ENh30v7eLj1e2GKWer+CNgV51T8nTjVGeI76/ F4EPzL6I0abI/tmWBCiB5ysSyLDcn67vzqcA1xRzenwr15suB1bT6Z1wNJ7oGxm4Pt q0uoTzZyy2NHQ== To: Jonas =?utf-8?Q?M=C3=A5rtensson?= , Jonathan Morton Cc: Cake List In-Reply-To: References: <87a7tv3r5z.fsf@toke.dk> Date: Tue, 24 Apr 2018 13:45:56 +0200 X-Clacks-Overhead: GNU Terry Pratchett Message-ID: <877eow96a3.fsf@toke.dk> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable Subject: Re: [Cake] Testing variants of the MTU latency scaling 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: Tue, 24 Apr 2018 11:45:58 -0000 Jonas M=C3=A5rtensson writes: > One thing that is still not clear to me from these results: if I run > cake on an IFB without ingress mode (i.e. the default?), does the MTU > scaling have any impact on TCP download throughput? Odds are that not using ingress mode will make Cake lose control of the bottleneck (that is what happened when I tried running a quick test), and so will mess up both latency and throughput as you hit the bloated upstream link buffer... -Toke