From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ea0-f180.google.com (mail-ea0-f180.google.com [209.85.215.180]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id CA1CC200666 for ; Sat, 9 Feb 2013 09:27:47 -0800 (PST) Received: by mail-ea0-f180.google.com with SMTP id c1so1939270eaa.25 for ; Sat, 09 Feb 2013 09:27:45 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=x-received:mime-version:sender:in-reply-to:references:from:date :x-google-sender-auth:message-id:subject:to:content-type; bh=KL0sq4YLOshORt3SdbeA8LYIplwjQuKAkXi/wIAqZxI=; b=jq5q5BPpOnfaMLbvwALGgsW31/l6NfLETbwHfki56JgVUexhtwvVj+xGArYLQ4OGum E8g6UWLXNibxOoJfbFTIfmNOAod1De69YP8fYR7b2ZXRNU/ZIkahwYN2Rr1a6uLkK4rF r30XaN/LI1Yu+/qzcHdyy6HWJ1QBw6iOKfxa3jWt1Fm1MoZSCrGIL3UR6Dx5JI8mRr5v Q7m4Wm+aNQEMgSNnozkQ9upsCoPF61QM7/5dmLLmPLCLPaRxO4JHLGU5yUWEU5sJIIbb A8d5ujKkGAj5SClySftTfkMYgR8OfhLILaAMMxj5d5KBq1eSFoA7I/1LUKsl27fqFuyK w05A== X-Received: by 10.14.174.73 with SMTP id w49mr29795621eel.17.1360430864890; Sat, 09 Feb 2013 09:27:44 -0800 (PST) MIME-Version: 1.0 Sender: jeroen.balduyck@gmail.com Received: by 10.14.209.193 with HTTP; Sat, 9 Feb 2013 09:27:14 -0800 (PST) In-Reply-To: References: From: Forums1000 Date: Sat, 9 Feb 2013 18:27:14 +0100 X-Google-Sender-Auth: t5KzH9wXUnLMI9tPjCwjq_yhPA0 Message-ID: To: bloat@lists.bufferbloat.net Content-Type: multipart/alternative; boundary=047d7b6042f0717a1804d54dfe0d Subject: Re: [Bloat] I am unable to pinpoint the source of bufferbloat 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: Sat, 09 Feb 2013 17:27:48 -0000 --047d7b6042f0717a1804d54dfe0d Content-Type: text/plain; charset=ISO-8859-1 Hi Jonathan and Dave My entire LAN-network is gigabit. My cable subscription is 60 megabit down and 4 megabit up. Now, both my routers' WAN-port and the cable modems' LAN port are also gigabit. The router can route LAN to WAN and the other way around (with NAT and connection tracking enabled) in excess of 100 megabit. Now my cable modem is a Motorola Surfboard SV6120E and hers is a Motorola Surfboard CV6181E. My upload lag is 550ms and hers is only 220ms. Moreover, at her place there are Powerplugs in the path limiting her download to 30 megabit instead of 60 megabit. Yet, the upload lag is much lower than mine. There, it also did not matter where I ran Natalyzr, the result was always 220ms of bufferbload. Could this still be only the modem? On Sat, Feb 9, 2013 at 10:52 AM, Forums1000 wrote: > Hi everyone, > > Can anyone give some tips on how to diagnose the sources of bufferbloat? > According to the Netalyzr test at http://netalyzr.icsi.berkeley.edu/, I > have 550ms of upload bufferbloat. I tried all kinds of stuff on my Windows > 7 laptop: > > - For the Intel(R) 82567LF Gigabit Network Connection, I put receive and > transmit buffers to the lowest value of 80 (80 bytes? 80 packets? I don't > know). I also disabled interrupt moderation. > Result? Still 550ms. > - Then I connected my laptop directly to my cable modem, bypassing my > Mikrotik 450G router. Result? Still 550ms of bufferbloat. > - Then I put a 100 megabit switch between the cable modem an the laptop > (as both cable modem and Intel NIC are gigabit). Result? Still 550ms of > upload bufferbloat. > > I'm out of ideas now. It seems I can't do anything at all to lower > bufferbloat. Or the Netalyzr test is broken?:-) > > many thanks for your advice, > Jeroen > > --047d7b6042f0717a1804d54dfe0d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Hi Jonathan and Dave

My entire LAN-network is gigabit. My cable subs= cription is 60 megabit down and 4 megabit up.
Now, both my routers'= WAN-port and the cable modems' LAN port are also gigabit. The router c= an route LAN to WAN and the other way around (with NAT and connection track= ing enabled) in excess of 100 megabit.

Now my cable modem is a Motorola Surfboard SV6120E and hers is a Motoro= la Surfboard CV6181E. My upload lag is 550ms and hers is only 220ms. Moreov= er, at her place there are Powerplugs in the path limiting her download to = 30 megabit instead of 60 megabit. Yet, the upload lag is much lower than mi= ne. There, it also did not matter where I ran Natalyzr, the result was alwa= ys 220ms of bufferbload.

Could this still be only the modem?


On Sat, Feb 9, 2013 at 10:52 AM, Forums1000 <forums1000@gmail.com> wrote:
Hi everyone,

Can anyone give some tip= s on how to diagnose the sources of bufferbloat? According to the Netalyzr = test at ht= tp://netalyzr.icsi.berkeley.edu/, I have 550ms of upload bufferbloat. I= tried all kinds of stuff on my Windows 7 laptop:

- For the Intel(R) 82567LF Gigabit Network Connection, I put receive an= d transmit buffers to the lowest value of 80 (80 bytes? 80 packets? I don&#= 39;t know). I also disabled interrupt moderation.
Result? Still 550ms.<= br> - Then I connected my laptop directly to my cable modem, bypassing my Mikro= tik 450G router. Result? Still 550ms of bufferbloat.
- Then I put a 100= megabit switch between the cable modem an the laptop (as both cable modem = and Intel NIC are gigabit). Result? Still 550ms of upload bufferbloat.

I'm out of ideas now. It seems I can't do anything at all to lo= wer bufferbloat. Or the Netalyzr test is broken?:-)

many thanks for = your advice,
Jeroen


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