From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <toke@toke.dk>
Received: from mail2.tohojo.dk (mail2.tohojo.dk [77.235.48.147])
	(using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits))
	(Client did not present a certificate)
	by huchra.bufferbloat.net (Postfix) with ESMTPS id 44CDF21F3C8
	for <bloat@lists.bufferbloat.net>; Fri, 27 Mar 2015 15:18:43 -0700 (PDT)
X-Virus-Scanned: amavisd-new at mail2.tohojo.dk
Sender: toke@toke.dk
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=toke.dk; s=201310;
	t=1427494714; bh=dPf+GXi03HUQKk++qSGCKMENR0WBpOR5I7dRyUfN56g=;
	h=In-Reply-To:References:Subject:From:Date:To:CC;
	b=EzybZ0E0v/7ApsE+/w8qHL6TZa5Em25VTI3BncuoX4bAYb/YkAfTusDKGkVso8sdj
	vYxKOw0EtXJyKZ9q/Q3nigM556XspWdfEgeiiac23o7Xf1+acDkHUdIlGImIUeFo/X
	dfdtU4OMPRBGJYRgTqcDiDP5G4afEPShFQceBRyo=
In-Reply-To: <AE7F97DB5FEE054088D82E836BD15BE93199035E@xmb-aln-x05.cisco.com>
References: <AE7F97DB5FEE054088D82E836BD15BE9319902F7@xmb-aln-x05.cisco.com>
	<alpine.DEB.2.02.1503271452120.19390@nftneq.ynat.uz>
	<AE7F97DB5FEE054088D82E836BD15BE93199035E@xmb-aln-x05.cisco.com>
MIME-Version: 1.0
Content-Type: text/plain;
 charset=UTF-8
From: =?ISO-8859-1?Q?Toke_H=F8iland-J=F8rgensen?= <toke@toke.dk>
Date: Fri, 27 Mar 2015 23:18:30 +0100
To: "Bill Ver Steeg (versteb)" <versteb@cisco.com>,David Lang <david@lang.hm>
X-Clacks-Overhead: GNU Terry Pratchett
Message-ID: <367FBE43-C3CF-4947-AD4C-521506F7C799@toke.dk>
Content-Transfer-Encoding: quoted-printable
Cc: "bloat@lists.bufferbloat.net" <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] setting queue depth on tail drop
	configurations	of	pfifo_fast
X-BeenThere: bloat@lists.bufferbloat.net
X-Mailman-Version: 2.1.13
Precedence: list
List-Id: General list for discussing Bufferbloat <bloat.lists.bufferbloat.net>
List-Unsubscribe: <https://lists.bufferbloat.net/options/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=unsubscribe>
List-Archive: <https://lists.bufferbloat.net/pipermail/bloat>
List-Post: <mailto:bloat@lists.bufferbloat.net>
List-Help: <mailto:bloat-request@lists.bufferbloat.net?subject=help>
List-Subscribe: <https://lists.bufferbloat.net/listinfo/bloat>,
	<mailto:bloat-request@lists.bufferbloat.net?subject=subscribe>
X-List-Received-Date: Fri, 27 Mar 2015 22:19:12 -0000


>I would like to reduce the tail drop queue size to 100 packets (down
>from the default of 1000) and see how that impacts the test. 3 seconds
>of bloat is pretty bad, and I would like to compare how ABR works at at
>1 second and at 200-300 ms.

Did you re-initiate the pfifo_fast qdisc after changing txqlen? IIRC, it =
picks up the len at init time, and so won't update automatically when you=
 change it...

-Toke