From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail.mediaspot.net (mail.mediaspot.net [109.73.92.181]) by huchra.bufferbloat.net (Postfix) with ESMTP id 1BE1D21F18C for ; Fri, 21 Dec 2012 02:19:41 -0800 (PST) X-Spam-Status: No, hits=5.3 required=6.5 tests=BAYES_99: 4.07,HTML_MESSAGE: 0.001,TRACKER_ID: 1.306, TOTAL_SCORE: 5.377,autolearn=no X-Spam-Level: ***** X-Footer: bWVkaWFzcG90Lm5ldA== Received: from exchange.mediaspot.net ([192.168.0.22]) by mail.mediaspot.net (using TLSv1/SSLv3 with cipher AES128-SHA (128 bits)) for Codel@lists.bufferbloat.net; Fri, 21 Dec 2012 11:19:36 +0100 Received: from EXCHANGE.mediaspot.local ([fe80::59f7:a31d:de3f:869b]) by EXCHANGE.mediaspot.local ([fe80::59f7:a31d:de3f:869b%26]) with mapi id 14.02.0328.009; Fri, 21 Dec 2012 11:19:36 +0100 From: Alessandro Bolletta To: "Codel@lists.bufferbloat.net" Thread-Topic: [Codel] Making tests on Tp-link router powered by Openwrt svn Thread-Index: Ac3e23C9ei5rCf6/RQGVc6vLTCcQLP//8jmA//7kAHA= Date: Fri, 21 Dec 2012 10:19:35 +0000 Message-ID: References: In-Reply-To: Accept-Language: it-IT, en-US Content-Language: it-IT X-MS-Has-Attach: X-MS-TNEF-Correlator: x-originating-ip: [192.168.0.79] Content-Type: multipart/alternative; boundary="_000_F52F175DFC537F48A43937B50B44BCA276D02433EXCHANGEmediasp_" MIME-Version: 1.0 Subject: [Codel] R: Making tests on Tp-link router powered by Openwrt svn X-BeenThere: codel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: CoDel AQM discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 21 Dec 2012 10:19:43 -0000 --_000_F52F175DFC537F48A43937B50B44BCA276D02433EXCHANGEmediasp_ Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable Hi jonathan, This is how i configured the testbed: I have a windows 8 laptop connected directly on the tplink/openwrt router. = Tplink is also connected to a gigabit switch. So, i thought to make some file uploads from a linux samba file server conn= ected to the switch to my windows 8 laptop, through SMB protocol (which use= s TCP). In order to create the bottleneck, tplink router has two 10/100mbits ports.= So, i restricted the port connected to the switch to 10Mbit half duplex. Also, i tried to decrease interval and target options in order to obtain a = latency, for connections estabilished while upload is flowing, lower that 5= ms. So i set target at 2ms and interval to 5ms. So this is the schema: laptop----tplink---switch---linuxserver where tplink is routing subnets. If i ping "linux server" i get very high latencies...and if i ping other PC= s connected to the switch, i get about 10ms latencies. I also tried to lower target at 1 ms and interval at 2ms, but i see the sam= e effects. If i disable fq_codel, i get always the same result. Can you explain me where i'm going wrong? Thanks Da: Jonathan Morton [mailto:chromatix99@gmail.com] Inviato: gioved=EC 20 dicembre 2012 19.08 A: Alessandro Bolletta Cc: Codel@lists.bufferbloat.net Oggetto: Re: [Codel] Making tests on Tp-link router powered by Openwrt svn Is the bottleneck actually at your router, or (as is more usual) at the mod= em? - Jonathan Morton On Dec 20, 2012 7:57 PM, "Alessandro Bolletta" > wrote: Hi everybody, Today i made some tests on my tplink home router powered by the lastest sna= pshot build of Openwrt. So, i configured tc to make fq_codel the default queuing algorithm for 2 et= h ports available on the router (leaving unchanged default values). So, i started some TCP sessions through my Windows client and I loaded the = available bandwidth...but the test wasn't going as expected because i exper= ienced packet loss and high delays as i did when the default simple fifo qu= eue was the default queue. Is there something that i'm not understanding? Thanks, Alessandro Bolletta _______________________________________________ Codel mailing list Codel@lists.bufferbloat.net https://lists.bufferbloat.net/listinfo/codel --_000_F52F175DFC537F48A43937B50B44BCA276D02433EXCHANGEmediasp_ Content-Type: text/html; charset="iso-8859-1" Content-Transfer-Encoding: quoted-printable

Da: Jonathan= Morton [mailto:chromatix99@gmail.com]
Inviato: gioved=EC 20 dicembre 2012 19.08
A: Alessandro Bolletta
Cc: Codel@lists.bufferbloat.net
Oggetto: Re: [Codel] Making tests on Tp-link router powered by Openw= rt svn

 

Is the bottleneck actually at your router, or (as is more usual) at the = modem?

- Jonathan Morton

On Dec 20, 2012 7:57 PM, "Alessandro Bolletta&q= uot; <alessandro@mediaspot.n= et> wrote:

Hi everybody,
Today i made some tests on my tplink home router powered by the lastest sna= pshot build of Openwrt.
So, i configured tc to make fq_codel the default queuing algorithm for 2 et= h ports available on the router (leaving unchanged default values).
So, i started some TCP sessions through my Windows client and I loaded the = available bandwidth...but the test wasn't going as expected because i exper= ienced packet loss and high delays as i did when the default simple fifo qu= eue was the default queue.
Is there something that i'm not understanding?

Thanks,
Alessandro Bolletta
_______________________________________________
Codel mailing list
Codel@lists.bufferbloat.net<= /a>
= https://lists.bufferbloat.net/listinfo/codel

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