From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-x235.google.com (mail-ob0-x235.google.com [IPv6:2607:f8b0:4003:c01::235]) (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 7A5D73B2C7 for ; Tue, 16 Feb 2016 14:20:00 -0500 (EST) Received: by mail-ob0-x235.google.com with SMTP id wb13so275145832obb.1 for ; Tue, 16 Feb 2016 11:20:00 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=0YVA9n7W71rFHuFakCdzMuP67y6DmG9h7/C81tUxJjs=; b=I5sy7iFI9AO+yMuzW0vgtRb2UigsPrajFiUlDuXN2XHlD19jBzk2gKfz0NerlEY3Ui ut1Yllov61aUUYQlmY+A1ae6GDWJLJhE1ZT0Wdl/eRuL2hSEpuOfSHdCqfda7LrqU7Ax tUP2IraK1j6LUWPPY3UNw47J+xC2NU4qgoCNyHsXKap6gCOzKPx3m8M2kUNrN37P9tk6 NuRENyh1d4GIddY5v4vVnkvYpsufC9VX46ADqpD837qaCtIUKZN25a8txy42dLX9hqBN fqYxmnh3AcQhpxNFCxBJ7Lr+fzTvVPpFkQSGsOgFXjU79LNFPGvvKlL1p72nV6zwsmGc SLIA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=0YVA9n7W71rFHuFakCdzMuP67y6DmG9h7/C81tUxJjs=; b=fwvkTX/5+PR6weCP9/KBS13xPiwPKKd5hmPeHr9lajCdfTuMCx4mitcPG8c/AmJhfd 6daBLXAdkewzoGMYGjoZ5gWwjpx+qVJXwDkUTNnR/m0VFDRNJ0HECGv64Ve0G0OZT4Sh idYZvNzBTRvDA1SeIlOq1DAPfFd8h8bEKSbnaqaCf9Cfb5u8bgQui0grM7WTUInBbBo1 Zo+/2jijBNDrUSXkhE707GrbQOCxIY9WageLMvTgPAzaCcWE4Lmruadjy/RMM/y5UO3W CA6FV4zIblzy/e7GGunjMoEF8OAU5RyhSo60aSFveEWUZBbIaD9ynL1dFcHYaUeH9kPI xBAQ== X-Gm-Message-State: AG10YOSRQsgBCJ4i9PDGi6YwPc13N+n+YUx1eA0ff/l1bTLAXy7VcXczxXYYlQO8mqWTS/gI8oJB5tnHXsqsyg== MIME-Version: 1.0 X-Received: by 10.202.178.135 with SMTP id b129mr17621823oif.139.1455650399881; Tue, 16 Feb 2016 11:19:59 -0800 (PST) Received: by 10.202.79.5 with HTTP; Tue, 16 Feb 2016 11:19:59 -0800 (PST) In-Reply-To: <86929A3A-5095-4506-8897-03EA5DABAF90@gmail.com> References: <86929A3A-5095-4506-8897-03EA5DABAF90@gmail.com> Date: Tue, 16 Feb 2016 11:19:59 -0800 Message-ID: From: Dave Taht To: John Klimek Cc: bloat Content-Type: text/plain; charset=UTF-8 Subject: Re: [Bloat] fq_codel settings for 25/3 connection? 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: Tue, 16 Feb 2016 19:20:00 -0000 On Tue, Feb 16, 2016 at 10:06 AM, John Klimek wrote: > Does anybody have any suggested quantum/target values for a cable modem connection of 25/3? (25 Mbps down, 3 Mbps up) I would use a quantum 300 for the up. There is no need to fiddle with the target values below 2.5mbits. The edgerouter has issues with tcp offloads enabled. If you are not using the other ports as routed ports, you can disable gro offloads on all ports for lower latency at a huge cost in local bandwidth (this is something that cake will fix if we can get ubnt to ship it one day. http://www.bufferbloat.net/projects/codel/wiki/CakeTechnical ) > > It looks like the defaults for Ubiquity EdgeRouter should work but I'm not sure if I can achieve better performance by tuning anything? Make a change, measure with a good benchmark like flent's rrul test. > Also, should I enable fq_codel on my downstream or only my upstream? Both are severely overbuffered on cablemodems and CMTSes running at this speed. http://burntchrome.blogspot.com/2014/05/fixing-bufferbloat-on-comcasts-blast.html https://wiki.openwrt.org/doc/howto/sqm > Thanks! > > - John > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat