From: Mikael Abrahamsson <swmike@swm.pp.se>
To: 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 06:52:57 +0200 (CEST) [thread overview]
Message-ID: <alpine.DEB.2.02.1507300651040.11810@uplift.swm.pp.se> (raw)
In-Reply-To: <alpine.DEB.2.02.1507291426410.16775@nftneq.ynat.uz>
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.
--
Mikael Abrahamsson email: swmike@swm.pp.se
next prev parent reply other threads:[~2015-07-30 4:53 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 [this message]
2015-07-30 5:17 ` Jan Ceuleers
2015-07-30 13:04 ` Bill Ver Steeg (versteb)
2015-07-30 14:54 ` Jan Ceuleers
2015-07-30 15:27 ` Dave Taht
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
List information: https://lists.bufferbloat.net/postorius/lists/bloat.lists.bufferbloat.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=alpine.DEB.2.02.1507300651040.11810@uplift.swm.pp.se \
--to=swmike@swm.pp.se \
--cc=bloat@lists.bufferbloat.net \
--cc=david@lang.hm \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox