From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from nasse.dc.kau.se (smtp.kau.se [193.10.220.39]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (Client CN "smtp.kau.se", Issuer "TERENA SSL CA" (not verified)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 266F521F20F for ; Wed, 30 Oct 2013 19:04:32 -0700 (PDT) X-Spam-Processed: mail.kau.se, Thu, 31 Oct 2013 03:04:15 +0100 (not processed: spam filter heuristic analysis disabled) X-Authenticated-Sender: stefalfr@kau.se X-MDRemoteIP: 79.136.22.93 X-Return-Path: Stefan.Alfredsson@kau.se X-Envelope-From: Stefan.Alfredsson@kau.se X-MDaemon-Deliver-To: bloat@lists.bufferbloat.net Message-ID: <5271BAA7.2080905@kau.se> Date: Thu, 31 Oct 2013 03:04:23 +0100 From: Stefan Alfredsson User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:24.0) Gecko/20100101 Thunderbird/24.0.1 MIME-Version: 1.0 To: bloat@lists.bufferbloat.net References: <20131030162534.29f34ada@nehalam.linuxnetplumber.net> In-Reply-To: <20131030162534.29f34ada@nehalam.linuxnetplumber.net> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit 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 02:04:33 -0000 Hi, Stephen, the list, We're running a 3G/4G measurement site at Karlstad university, with mobile broadband subscriptions from the four major telecom operators in Sweden. I was curious to see how measurements in our network would compare to yours, so I did a measurement run with netalyzer. To summarize, the measured buffering is well below one second for all tests, although the results are not directly comparable since we are using directly attached USB modems (Huawei E392 with Ubuntu 12.04) instead of a separate router box. However, the numbers might be interesting in a more general perspective. Tele2 LTE: Upload 12 Mbit/s, 240 ms buffering, Download > 20 Mbit/s, buffering not measurable http://n1.netalyzr.icsi.berkeley.edu/summary/id=43ca253f-6593-7f837e62-5321-488e-b480 Tele2 HSPA+: Upload 1.1 Mbit/s, 630 ms buffering, Download > 20 Mbit/s, 509 ms buffering http://n2.netalyzr.icsi.berkeley.edu/summary/id=43ca208a-23052-a0e80cbb-9a7c-44e0-ba88 Telenor LTE: Upload 16 Mbit/s, 190 ms buffering, Download >20 Mbit/s, 470 ms buffering http://n3.netalyzr.icsi.berkeley.edu/summary/id=36ea240d-31617-45bca5e3-53ef-450e-a9bf Telenor HSPA+: Upload 3.4 Mbit/s, 200 ms buffering, Download > 14 Mbit/s, 490 ms buffering http://n3.netalyzr.icsi.berkeley.edu/summary/id=36ea240d-31612-c6d0d98d-8bcf-4a03-832d Telia LTE: Upload 18 Mbit/s, 140 ms buffering, Download > 20 Mbit/s, buffering not measurable http://n3.netalyzr.icsi.berkeley.edu/summary/id=36ea240d-31599-1ebc684e-c164-4786-832a Telia HSPA+: Upload 1.1 Mbit/s, 630 ms buffering, Download > 20 Mbit/s, 640 ms buffering http://n2.netalyzr.icsi.berkeley.edu/summary/id=43ca208a-22984-40c59ae2-0c36-4e67-9039 (note similarity with Tele2 HSPA+ - IIUC Tele2 and Telia share the 3G network infrastructure) Tre LTE: Upload 19 Mbit/s, 150 ms buffering, Download > 20 Mbit/s, 98 ms buffering http://n3.netalyzr.icsi.berkeley.edu/summary/id=36ea240d-31648-86a273a5-82ae-4929-a634 Tre HSPA+: Upload 3.5 Mbit/s, 190 ms buffering, Download > 8.6 Mbit/s, 780 ms buffering http://n1.netalyzr.icsi.berkeley.edu/summary/id=43ca253f-6609-3316da33-9ea6-41ca-a8ac For reference, I also made a measurement from the same host, but using a wired connection over the Swedish university network: Upload was measured to > 20 Mbit/s and download to 15 Mbit/s, with no measurable buffering. http://n1.netalyzr.icsi.berkeley.edu/summary/id=43ca253f-6563-078896ce-dc0a-4333-9119 Regards, Stefan Alfredsson On 10/31/13 00:25 , Stephen Hemminger wrote: > I got one of these Samsung LTE hotspot. > Not surprisingly it has huge bloat and a stupid http proxy > that netalyzer claims rewrites images. > > Bandwidth: Up 1.6 Mbit/sec Down 4.3Mbit/sec > Latency: 140ms 0% loss > Buffering: Uplink 5100ms Down 1800ms > > How can the uplink side be so bad! 5 seconds??? > > Might even return it as defective. You can't even add a review on their > website. Probably they would end taking down like Apple. > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat