From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-bk0-f54.google.com (mail-bk0-f54.google.com [209.85.214.54]) (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 8FDF221F0E8 for ; Sat, 9 Feb 2013 06:33:24 -0800 (PST) Received: by mail-bk0-f54.google.com with SMTP id w5so2049726bku.41 for ; Sat, 09 Feb 2013 06:33:22 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:x-received:in-reply-to:references:date:message-id :subject:from:to:cc:content-type; bh=BAT/1/ttoM461FXFMWGXI9LmxTKmm8vqR31ugzAsBp0=; b=yQ/Cr82OQHbBoUur+jy85zQpLZJBAbSAHgvpgkEFX3or3V2U3yHOslNkwjcy6lJuJh x8vdnHcRWnHARvzm815wdc6Hq2Sx27uLooNKRiAJUavzt48QBitML5ALSQjRO/4Hjpi3 /X40iweN2wYAxzCdodYg8DrEhqrEawZlbgk/uru8GHCUi9knC1RaUpVrhQIomDlnlcvk d7BIZA6Gzr6mZBKQ4+Wdtx5o6msEo4wbq9dHgQYYn+uELA09EtSYTfP8s0ufcsPBcf7N G2C9liZgXtmlawIM86g+AbT/yi/V+LEch02LXOeUKgpNdOAlsDvJzmrF0rITe2hddH7K 4moQ== MIME-Version: 1.0 X-Received: by 10.204.8.207 with SMTP id i15mr2427782bki.19.1360420401998; Sat, 09 Feb 2013 06:33:21 -0800 (PST) Received: by 10.204.50.150 with HTTP; Sat, 9 Feb 2013 06:33:21 -0800 (PST) Received: by 10.204.50.150 with HTTP; Sat, 9 Feb 2013 06:33:21 -0800 (PST) In-Reply-To: References: Date: Sat, 9 Feb 2013 16:33:21 +0200 Message-ID: From: Jonathan Morton To: Forums1000 Content-Type: multipart/alternative; boundary=00151758f296ce6ce704d54b8eca Cc: bloat 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 14:33:25 -0000 --00151758f296ce6ce704d54b8eca Content-Type: text/plain; charset=ISO-8859-1 What's the uplink speed from your modem onwards? If that's less than 100Mbit then your bottleneck is still there after all you've done. That's where your bloat will be too. - Jonathan Morton On Feb 9, 2013 11:53 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 > > > _______________________________________________ > Bloat mailing list > Bloat@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/bloat > > --00151758f296ce6ce704d54b8eca Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

What's the uplink speed from your modem onwards? If that's less = than 100Mbit then your bottleneck is still there after all you've done.= That's where your bloat will be too.

- Jonathan Morton

On Feb 9, 2013 11:53 AM, "Forums1000" = <forums1000@gmail.com> wr= ote:
Hi everyone,

Can anyone give some tips on how to diagnose the source= s 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 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


_______________________________________________
Bloat mailing list
Bloat@lists.bufferbloat.net<= /a>
= https://lists.bufferbloat.net/listinfo/bloat

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