From: Andy Furniss <adf.lists@gmail.com>
To: xnor <xnoreq@gmail.com>, David Lang <david@lang.hm>
Cc: Cake@lists.bufferbloat.net
Subject: Re: [Cake] cake default target is too low for bbr?
Date: Sat, 29 Apr 2017 00:54:35 +0100 [thread overview]
Message-ID: <daef3f07-9828-3470-4462-fde786c891d7@gmail.com> (raw)
In-Reply-To: <5ca09d5c-e674-110a-72e4-b8fd434c7a5d@gmail.com>
Andy Furniss wrote:
> Andy Furniss wrote:
>
>>> b) it reacts to increase in RTT. An experiment with 10 Mbps
>>> bottleneck, 40 ms RTT and a typical 1000 packet buffer, increase in
>>> RTT with BBR is ~3 ms while with cubic it is over 1000 ms.
>>
>> That is a nice aspect (though at 60mbit hfsc + 80ms bfifo I tested with
>> 5 tcps it was IIRC 20ms vs 80 for cubic). I deliberately test using ifb
>> on my PC because I want to pretend to be a router - IME (OK it was a
>> while ago) testing on eth directly gives different results - like the
>> locally generated tcp is backing off and giving different results.
>
> I retested this with 40ms latency (netem) with hfsc + 1000 pfifo on ifb.
Forgot to put this was was 10mbit not 60.
next prev parent reply other threads:[~2017-04-28 23:54 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <mailman.435.1493406198.3609.cake@lists.bufferbloat.net>
2017-04-28 21:11 ` xnor
2017-04-28 21:29 ` David Lang
2017-04-28 21:54 ` Andy Furniss
2017-04-28 22:02 ` xnor
2017-04-28 22:26 ` Andy Furniss
2017-04-28 23:52 ` Andy Furniss
2017-04-28 23:54 ` Andy Furniss [this message]
2017-05-03 9:50 ` Andy Furniss
2017-05-04 2:13 ` Jim Gettys
2017-05-04 10:22 ` Andy Furniss
2017-05-04 17:40 ` Jim Gettys
2017-05-08 10:37 ` Andy Furniss
2017-04-29 4:32 ` Jonathan Morton
2017-04-29 10:31 ` Andy Furniss
2017-04-28 19:03 Andy Furniss
2017-04-28 20:45 ` [Cake] " Andy Furniss
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/cake.lists.bufferbloat.net/
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=daef3f07-9828-3470-4462-fde786c891d7@gmail.com \
--to=adf.lists@gmail.com \
--cc=Cake@lists.bufferbloat.net \
--cc=david@lang.hm \
--cc=xnoreq@gmail.com \
/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