From: Jan Ceuleers <jan.ceuleers@gmail.com>
To: Mikael Abrahamsson <swmike@swm.pp.se>, David Lang <david@lang.hm>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] Speed tests - attribution of latency to relevant network hops
Date: Thu, 30 Jul 2015 07:17:47 +0200 [thread overview]
Message-ID: <55B9B37B.9050506@gmail.com> (raw)
In-Reply-To: <alpine.DEB.2.02.1507300651040.11810@uplift.swm.pp.se>
On 30/07/15 06:52, Mikael Abrahamsson wrote:
> On Wed, 29 Jul 2015, David Lang wrote:
>
>> unless you measure it per hop, how are you going to attribute it to
>> each hop? and unless you have a server at that layer to talk to, how
>> do you know what the latency or bandwidth is?
>
> Measuring latency is doable (using the same mechanism that traceroute
> with for instance max-ttl 5), but I don't know how much of this is
> available to your web application?
>
> If you sent 5 packets with TTL 1-5 and measured the time to get back the
> ttl-expired-in-transit ICMP, you could get an indication where the
> latency increase was happening.
Yes, that's what I had in mind.
next prev parent reply other threads:[~2015-07-30 5:22 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-07-29 19:39 Jan Ceuleers
2015-07-29 21:28 ` David Lang
2015-07-30 4:52 ` Mikael Abrahamsson
2015-07-30 5:17 ` Jan Ceuleers [this message]
2015-07-30 13:04 ` Bill Ver Steeg (versteb)
2015-07-30 14:54 ` Jan Ceuleers
2015-07-30 15:27 ` Dave Taht
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