General list for discussing Bufferbloat
 help / color / mirror / Atom feed
From: Mario Hock <mario.hock@kit.edu>
To: bloat@lists.bufferbloat.net
Subject: Re: [Bloat] Large decrease in speed needed to combat bufferbloat?
Date: Fri, 21 Oct 2016 10:32:40 +0200	[thread overview]
Message-ID: <78a109c2-421d-a55e-c996-bd3116f7e224@kit.edu> (raw)
In-Reply-To: <CAGwEnGxMt3XUpqUxk80Pdqkd1pfX42BMc3AQ1zXsSGUAZjmkJQ@mail.gmail.com>

Hi,

Am 17.08.2016 um 10:21 schrieb Alec Robertson:
> The other question I would like to ask is, what's the absolute best way to
> see what the ping maximum actually is? With speedtest.net the ping only
> increases 1-2ms (pinging bbc.co.uk) and the same is true for dslreports.com
> (maybe a little bit higher, maximum of about 5ms) but on the dslreports.com
> site it says 9ms+ at times?

you can get access to the internal RTT estimation of the TCP stack with 
the tool TCPlog (https://git.scc.kit.edu/CPUnetLOG/TCPlog).

It shows (among other values): minRtt, maxRtt, avgRtt, meanRtt

But be aware that you have to run TCPlog on the sending end-system. 
Also, TCPlog is only available for Linux.

Best regards,

Mario Hock

      parent reply	other threads:[~2016-10-21  8:33 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2016-08-17  8:21 Alec Robertson
2016-10-20 17:57 ` David Collier-Brown
2016-10-21  3:53 ` jb
2016-10-21  4:39 ` Mikael Abrahamsson
2016-10-21  8:32 ` Mario Hock [this message]

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=78a109c2-421d-a55e-c996-bd3116f7e224@kit.edu \
    --to=mario.hock@kit.edu \
    --cc=bloat@lists.bufferbloat.net \
    /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