From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mxip3-inbound.gatech.edu (mxip3-inbound.gatech.edu [130.207.182.45]) by huchra.bufferbloat.net (Postfix) with ESMTP id D6E4821F20C for ; Wed, 30 Oct 2013 17:29:20 -0700 (PDT) X-RemoteIP: 130.207.185.166 X-Group: ZimbraSenderGroup X-Policy: $ZIMBRA X-MID: 15354313 X-SBRS: None X-IronPort-AV: E=Sophos;i="4.93,605,1378872000"; d="scan'208";a="15354313" X-GT-Spam-Rating: (0%) Received: from mail6.gatech.edu ([130.207.185.166]) by mxip3-outbound.gatech.edu with ESMTP; 30 Oct 2013 20:29:19 -0400 Received: from drones.lan (mb44036d0.tmodns.net [208.54.64.180]) (Authenticated sender: ssundaresan3) by mail6.gatech.edu (Postfix) with ESMTPSA id C9DE82259C9; Wed, 30 Oct 2013 20:29:18 -0400 (EDT) Mime-Version: 1.0 (Apple Message framework v1085) Content-Type: text/plain; charset=us-ascii From: Srikanth Sundaresan In-Reply-To: Date: Wed, 30 Oct 2013 20:29:16 -0400 Content-Transfer-Encoding: quoted-printable Message-Id: <087A9C96-7717-4B83-AAF7-8C5B55A97525@gatech.edu> References: <20131030162534.29f34ada@nehalam.linuxnetplumber.net> To: Dave Taht X-Mailer: Apple Mail (2.1085) Cc: bloat Subject: Re: [Bloat] T-Mobile LTE buffer bloat 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: Thu, 31 Oct 2013 00:29:21 -0000 >>=20 >> My personal record for a mobile network is 180 seconds RTT. They = *really* >> *really* want to deliver the packets, and if the radio environment go = bad >> they'll still buffer 400 packets (or so). >=20 > Darn. You win. The worst I've seen is 84 seconds. >=20 Here's a ping trace from t-mobile when there was a big music festival a = block from my apartment. 122 seconds (but zero loss), before I get = disconnected. PING 8.8.8.8 (8.8.8.8): 56 data bytes 64 bytes from 8.8.8.8: seq=3D0 ttl=3D46 time=3D46656.509 ms 64 bytes from 8.8.8.8: seq=3D1 ttl=3D46 time=3D47046.226 ms 64 bytes from 8.8.8.8: seq=3D2 ttl=3D46 time=3D47210.621 ms 64 bytes from 8.8.8.8: seq=3D3 ttl=3D46 time=3D46300.097 ms 64 bytes from 8.8.8.8: seq=3D4 ttl=3D46 time=3D46490.259 ms 64 bytes from 8.8.8.8: seq=3D5 ttl=3D46 time=3D45543.573 ms 64 bytes from 8.8.8.8: seq=3D6 ttl=3D46 time=3D44610.118 ms 64 bytes from 8.8.8.8: seq=3D7 ttl=3D46 time=3D43659.564 ms 64 bytes from 8.8.8.8: seq=3D8 ttl=3D46 time=3D42677.023 ms 64 bytes from 8.8.8.8: seq=3D9 ttl=3D46 time=3D41747.164 ms 64 bytes from 8.8.8.8: seq=3D10 ttl=3D46 time=3D40834.181 ms 64 bytes from 8.8.8.8: seq=3D11 ttl=3D46 time=3D39834.719 ms 64 bytes from 8.8.8.8: seq=3D12 ttl=3D46 time=3D38898.367 ms 64 bytes from 8.8.8.8: seq=3D13 ttl=3D46 time=3D37966.098 ms 64 bytes from 8.8.8.8: seq=3D14 ttl=3D46 time=3D38126.381 ms 64 bytes from 8.8.8.8: seq=3D15 ttl=3D46 time=3D37173.727 ms 64 bytes from 8.8.8.8: seq=3D16 ttl=3D46 time=3D37393.522 ms 64 bytes from 8.8.8.8: seq=3D17 ttl=3D46 time=3D36405.295 ms 64 bytes from 8.8.8.8: seq=3D18 ttl=3D46 time=3D35495.237 ms 64 bytes from 8.8.8.8: seq=3D19 ttl=3D46 time=3D34522.977 ms 64 bytes from 8.8.8.8: seq=3D20 ttl=3D46 time=3D35750.939 ms 64 bytes from 8.8.8.8: seq=3D21 ttl=3D46 time=3D40660.576 ms 64 bytes from 8.8.8.8: seq=3D22 ttl=3D46 time=3D39730.537 ms 64 bytes from 8.8.8.8: seq=3D23 ttl=3D46 time=3D38730.503 ms 64 bytes from 8.8.8.8: seq=3D24 ttl=3D46 time=3D37804.354 ms 64 bytes from 8.8.8.8: seq=3D25 ttl=3D46 time=3D36819.838 ms 64 bytes from 8.8.8.8: seq=3D26 ttl=3D46 time=3D37153.646 ms 64 bytes from 8.8.8.8: seq=3D27 ttl=3D46 time=3D37413.711 ms 64 bytes from 8.8.8.8: seq=3D28 ttl=3D46 time=3D37581.268 ms 64 bytes from 8.8.8.8: seq=3D29 ttl=3D46 time=3D37733.075 ms 64 bytes from 8.8.8.8: seq=3D30 ttl=3D46 time=3D40190.826 ms 64 bytes from 8.8.8.8: seq=3D31 ttl=3D46 time=3D101158.557 ms 64 bytes from 8.8.8.8: seq=3D32 ttl=3D46 time=3D101264.386 ms 64 bytes from 8.8.8.8: seq=3D33 ttl=3D46 time=3D103640.134 ms 64 bytes from 8.8.8.8: seq=3D34 ttl=3D46 time=3D103819.819 ms 64 bytes from 8.8.8.8: seq=3D35 ttl=3D46 time=3D103958.008 ms 64 bytes from 8.8.8.8: seq=3D36 ttl=3D46 time=3D104057.496 ms 64 bytes from 8.8.8.8: seq=3D37 ttl=3D46 time=3D103081.290 ms 64 bytes from 8.8.8.8: seq=3D38 ttl=3D46 time=3D103191.206 ms 64 bytes from 8.8.8.8: seq=3D39 ttl=3D46 time=3D107700.964 ms 64 bytes from 8.8.8.8: seq=3D40 ttl=3D46 time=3D107818.726 ms 64 bytes from 8.8.8.8: seq=3D41 ttl=3D46 time=3D106833.938 ms 64 bytes from 8.8.8.8: seq=3D42 ttl=3D46 time=3D107042.706 ms 64 bytes from 8.8.8.8: seq=3D43 ttl=3D46 time=3D110530.331 ms 64 bytes from 8.8.8.8: seq=3D44 ttl=3D46 time=3D115255.932 ms 64 bytes from 8.8.8.8: seq=3D45 ttl=3D46 time=3D121191.910 ms 64 bytes from 8.8.8.8: seq=3D46 ttl=3D46 time=3D120217.588 ms 64 bytes from 8.8.8.8: seq=3D47 ttl=3D46 time=3D120653.489 ms 64 bytes from 8.8.8.8: seq=3D48 ttl=3D46 time=3D122025.125 ms ping: sendto: Network is unreachable