From mboxrd@z Thu Jan  1 00:00:00 1970
Return-Path: <toke@toke.dk>
Received: from mail.toke.dk (mail.toke.dk [IPv6:2a0c:4d80:42:2001::664])
 (using TLSv1.2 with cipher ADH-AES256-GCM-SHA384 (256/256 bits))
 (No client certificate requested)
 by lists.bufferbloat.net (Postfix) with ESMTPS id 182E73B29D
 for <bloat@lists.bufferbloat.net>; Sat, 27 Feb 2021 11:49:42 -0500 (EST)
From: Toke =?utf-8?Q?H=C3=B8iland-J=C3=B8rgensen?= <toke@toke.dk>
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=toke.dk; s=20161023;
 t=1614444581; bh=W6aKniL3T2a0NUB1dloYBXWELBiJY5k+G79Yt3gaf4E=;
 h=From:To:Cc:Subject:In-Reply-To:References:Date:From;
 b=kKgwaWDGgNCX2EmSuS0Sj2INe32XrvIU5lOmsUeL9x2VuF9OqpfQujimuVVPmSemX
 9RtXCmrZ+69u/wYXUNp76GO8czAQe5HEZkXkvxLBjYhWbiJJBnoBzUu4mqAJ/Zd4fn
 OZJcye2HVYKZKvgztt2GyYvMPPNwh0W2yycQodIupDg2u4xhRkMHfuFIEC/zgg67nU
 pXwR+BO7ydMNTcRhShIxVac6QaINBOO9oCS1co7apZ5d/er9Dpmu4AfQLL9bqo296p
 PPTmxBJxoF90yqEOJIeDeboK/QOcinphDpHejv39avxLsLGf2EMumNJtSEuBlAbVPN
 Uf5gdo3Iieo7Q==
To: Jason Iannone <jason.iannone@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>, Simon Sundberg <simon.sundberg@kau.se>
In-Reply-To: <CAGL1wDT_f3CXMzjGmkPvBebca_a9G=mUjhY2_OUoQ_XCaFKxaw@mail.gmail.com>
References: <CAGL1wDRUW7m2=En+PLsDcw1A_AOJLm1qmA2ihPP-UGFdB-5wLQ@mail.gmail.com>
 <87a6rs145a.fsf@toke.dk>
 <CAGL1wDQy5Yxp0kPM3kEVxJp8Lfj_SqSZc1=w5-2osvpSXo1KmA@mail.gmail.com>
 <CAGL1wDSYjamfSHhQBonHii54r8Rn9R13AJN9tCMm3ye5ZCRk8A@mail.gmail.com>
 <87blc6zghv.fsf@toke.dk>
 <CAGL1wDRAbtD72Sb9fu9R4xT4gnMq6MHNyCN0BOiVCofR4v73qg@mail.gmail.com>
 <87k0qtxzz0.fsf@toke.dk>
 <CAGL1wDT_f3CXMzjGmkPvBebca_a9G=mUjhY2_OUoQ_XCaFKxaw@mail.gmail.com>
Date: Sat, 27 Feb 2021 17:49:41 +0100
X-Clacks-Overhead: GNU Terry Pratchett
Message-ID: <87eeh1xxp6.fsf@toke.dk>
MIME-Version: 1.0
Content-Type: text/plain
Subject: Re: [Bloat] Trouble Installing PPing in MacOS
X-BeenThere: bloat@lists.bufferbloat.net
X-Mailman-Version: 2.1.20
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: Sat, 27 Feb 2021 16:49:42 -0000

Jason Iannone <jason.iannone@gmail.com> writes:

> Ideally, always on monitoring and export at the PE. An incremental first
> step in an adhoc off box tester, maybe deployed with the perfsonar suite.

Right. Are any of those boxes Linux-based? Otherwise the BPF
implementation is not much use to you :)

> Meaningfully visualizing the output seems challenging. Do you have any
> insights on that part?

No concrete plans yet, but the obvious thing that comes to mind is
looking for latency variation within flows, possibly correlating it with
rate. I tried to do something with the Measurement Labs NDT dataset some
years back:

https://dl.acm.org/doi/10.1145/2999572.2999603

For a middlebox monitor, the most interesting for identifying possible
interventions is to figure out which path the data corresponds to.
Depends a little on the network topology and the position of the
middlebox what would be a good way to do that...

-Toke