From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vc0-x22b.google.com (mail-vc0-x22b.google.com [IPv6:2607:f8b0:400c:c03::22b]) (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 BBC4A21F0E7 for ; Wed, 25 Feb 2015 09:56:44 -0800 (PST) Received: by mail-vc0-f171.google.com with SMTP id kv19so1983096vcb.2 for ; Wed, 25 Feb 2015 09:56:43 -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=7uzEcQtoBTKcIpRQ8LKf/mC23Mvx6RmUXn3WeUhScgg=; b=CX71xGDSK3+YJDnU2uwBcM+GlBbEiXL2dlYldjjKlee3VGd0HsE2JaLwGWBLzpxYvw Vi1/fd+5g1DoX485Zc3bsZTIfkN98nW7EfBv/Vj8/xmAJYAxj1bsbvDT3kAhQvVFkNdY ifVzgPuhRAruFTvkDxgF80wR12ND7G3hLfRiJQ31GjKMreKVb6LYRwpqX/h7Lvsn2ldQ 5//4iy7OlMkPyXbx5jxU0UtKY+FHNZSYhja+a8qESsbIcHgj+D+rZWhA8hyUhYDjDnnL d+ipum5+KNeycMN67uC23jlIIqjV15NelaGTzEX7/LyTPcInUiNCrts1MfwVgo0xx7W/ IQtw== MIME-Version: 1.0 X-Received: by 10.52.103.10 with SMTP id fs10mr5025011vdb.58.1424887002909; Wed, 25 Feb 2015 09:56:42 -0800 (PST) Received: by 10.52.24.79 with HTTP; Wed, 25 Feb 2015 09:56:42 -0800 (PST) Received: by 10.52.24.79 with HTTP; Wed, 25 Feb 2015 09:56:42 -0800 (PST) In-Reply-To: <54EE07C0.60703@orange.com> References: <201502250806.t1P86o5N011632@bagheera.jungle.bt.co.uk> <4A80D1F9-F4A1-4D14-AC75-958C5A2E8168@gmx.de> <3F47B274-B0E4-44F2-A434-E3C9F7D5D041@ifi.uio.no> <87twyaffv3.fsf@toke.dk> <1D438EDC-358D-4DD5-9B8D-89182256F66C@gmx.de> <54EDD951.50904@orange.com> <54EE07C0.60703@orange.com> Date: Wed, 25 Feb 2015 19:56:42 +0200 Message-ID: From: Jonathan Morton To: "MUSCARIELLO Luca OLNC/OLN" Content-Type: multipart/alternative; boundary=047d7b8748d4a74f71050fed5b95 Cc: bloat Subject: Re: [Bloat] RED against bufferbloat 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, 25 Feb 2015 17:57:13 -0000 --047d7b8748d4a74f71050fed5b95 Content-Type: text/plain; charset=UTF-8 > A single FQ instantiation has to consume no more memory than a single FIFO instantiation. That's easy enough. You can fit an awful lot of linked list pointers into the space of a single IP packet. Even if you're only assigning 64KB per subscriber, you can store 43 full packets and still have pointers to spare. A properly functioning AQM should mostly keep the queue smaller than that. - Jonathan Morton --047d7b8748d4a74f71050fed5b95 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable

> A single FQ instantiation has to consume no more memory= than a single FIFO instantiation.

That's easy enough. You can fit an awful lot of linked l= ist pointers into the space of a single IP packet. Even if you're only = assigning 64KB per subscriber, you can store 43 full packets and still have= pointers to spare. A properly functioning AQM should mostly keep the queue= smaller than that.

- Jonathan Morton

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