From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ve0-f176.google.com (mail-ve0-f176.google.com [209.85.128.176]) (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 2E9AD21F28E for ; Tue, 27 May 2014 05:20:58 -0700 (PDT) Received: by mail-ve0-f176.google.com with SMTP id jz11so10396438veb.7 for ; Tue, 27 May 2014 05:20:57 -0700 (PDT) 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=iNhjPCYJsg3AZWO+BawwRVsK+PJXP1e//C4iyy26iPU=; b=cyoOyfNaIdPlFW3qybeQFH1K8vTI8JQ7vDqkfWnbyCJtZFhnDP1ell+NkIH5JLwUNf ejc/hSZCWzI9vKon7mKfNSdSM2jOpaKwEM8xstPrKa3SDPwpIYW1SsHLre8YVEdItdcJ /KMvA125aiNgsdDTj+BU14kHpPSrlJZAIdgrpYuEAawmjQtFTKpve9MtmJFJZvey8tp2 5+XOZfbcc8yRmCnZxOGkURSvVqyioCDAbmFFO/+yy4IuxpMcxhLgjdg4XeYWszgJ3K+X iBYBA+M9wUXKdn0ZVn6PUm3zDUVpUg+EfP2BuEm8mTpCS6YYQTlL/YeyuI89z8lCvN8S CUgQ== X-Gm-Message-State: ALoCoQkomjnEklIbVY/d723sY0aHsDlSvyOSwOhmAveLR+/COR6m/X61MVClmnpMIt1oqSc5DzGK MIME-Version: 1.0 X-Received: by 10.52.110.105 with SMTP id hz9mr22805146vdb.9.1401193257509; Tue, 27 May 2014 05:20:57 -0700 (PDT) Received: by 10.58.127.100 with HTTP; Tue, 27 May 2014 05:20:57 -0700 (PDT) X-Originating-IP: [80.246.32.33] In-Reply-To: <6A1B2B32-DC32-41D8-9BA3-57E28DD18F64@pnsol.com> References: <6A1B2B32-DC32-41D8-9BA3-57E28DD18F64@pnsol.com> Date: Tue, 27 May 2014 14:20:57 +0200 Message-ID: From: Hagen Paul Pfeifer To: Neil Davies Content-Type: text/plain; charset=UTF-8 Cc: bloat@lists.bufferbloat.net Subject: Re: [Bloat] ipspace.net: "QUEUING MECHANISMS IN MODERN SWITCHES" 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: Tue, 27 May 2014 12:20:59 -0000 The question is if (codel/pie/whatever) AQM makes sense at all for 10G/40G hardware and higher performance irons? Igress/egress bandwidth is nearly identical, a larger/longer buffering should not happen. Line card memory is limited, a larger buffering is defacto excluded. Are there any documents/papers about high bandwidth equipment and bufferbloat effects? Hagen