From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-oi0-x22b.google.com (mail-oi0-x22b.google.com [IPv6:2607:f8b0:4003:c06::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 62AAD21F342; Wed, 25 Mar 2015 10:32:37 -0700 (PDT) Received: by oicf142 with SMTP id f142so18577665oic.3; Wed, 25 Mar 2015 10:32:36 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type :content-transfer-encoding; bh=i4EjwmRm66c7olq5BOMb9xd4BEYc60WTmEcZMA2YFhc=; b=sujdxV0vP+0+yGrvwFf6gKj5tZMQw2jWHiEeUTnmk4Od9x5QWAKXFd0O8G5aLC9e6M BeFbm5slNo+fjDntLL2gwcKYwX5ik7gvFTopemj4of6X8dbOoOkZJgRRmafHr03L7LxA x7kGCh936qZrty+UosYTwhE9sKUdk2md5Tysk8ce/E3t0KX/d2c+8tGrSmj7I5XleA6/ 0hXpYJzedzKdnypKIRA+Ue7/H8X/ndrPtQuznCrcqqN7nDf0POlxWAlq1oFmztz5MOcu RzfKdYavvuC6WW47kN8DwIYLWsHgOqoGRmGYbGzbOKn30lVJTWEGfZxn+vLrjswCHRw0 vwiw== MIME-Version: 1.0 X-Received: by 10.182.241.197 with SMTP id wk5mr8667902obc.0.1427304756807; Wed, 25 Mar 2015 10:32:36 -0700 (PDT) Received: by 10.202.51.66 with HTTP; Wed, 25 Mar 2015 10:32:36 -0700 (PDT) Date: Wed, 25 Mar 2015 10:32:36 -0700 Message-ID: Subject: fixing netem to be more useful From: Dave Taht To: bloat , bloat-devel , "codel@lists.bufferbloat.net" Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: bloat-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: "Developers working on AQM, device drivers, and networking stacks" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Wed, 25 Mar 2015 17:33:06 -0000 On of my big issues with netem (a network emulator for linux that lets you do delay, loss, etc) is that there is no way to setup multiple RTT emulations without having a separate maximum number of packets limit for each, which can really skew the results. I would like to see a netem that had a multi-queue implementation with a shared limit, among other things. Is there anyone working on making netem better? is there someone willing to work on it that someone could fund? This comment arose from the code facebook for their shaper implementation h= ere: https://github.com/facebook/augmented-traffic-control/tree/master/atc/atcd#= shaping-packets and the comments on this bug: https://github.com/facebook/augmented-traffic-control/issues/60 --=20 Dave T=C3=A4ht Let's make wifi fast, less jittery and reliable again! https://plus.google.com/u/0/107942175615993706558/posts/TVX3o84jjmb