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From: Sebastian Moeller <moeller0@gmx.de>
To: Emmanuel Blot <eblot.ml@gmail.com>
Cc: flent-users@flent.org
Subject: Re: [Flent-users] Help with RRUL / TCP upload
Date: Mon, 31 Jul 2017 20:13:55 +0200	[thread overview]
Message-ID: <35FBAAE5-FE6E-4D48-9884-B5AF7455A529@gmx.de> (raw)
In-Reply-To: <CAKJJEPxLeT6h-EA2aSxHBoi61xRx5wmMQ10W70XOze4b8SqinA@mail.gmail.com>


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Hi,

I believe you need to set the step size to something bigger:
from "run-flent --help"
-s STEP_SIZE, --step-size STEP_SIZE
                        Measurement data point step size.

For a slow link there are simply no data from netperf for a given "sampling" point and hence you get the intermittent plots. As far as I know there is unfortunately no way to specify the step size independent for both directions, so for non-choppy plots in your slow direction you will also get less time resolution in your fast direction...

Hope that helps




> On Jul 31, 2017, at 19:36, Emmanuel Blot <eblot.ml@gmail.com> wrote:
> 
> Hi all,
> 
> I’m a new flent user.
> 
> I’m trying to check my SQM settings on OpenWRT against bufferbloat.
> 
> For some reason, the TCP download and ping graphs for RRUL sessions
> give sensible results, whereas the TCP upload is broken into very
> small segments (even closer to dots actually), see the attached
> sample.
> 
> What am I doing wrong ?
> 
> command line: flent rrul -p all_scaled -l 60 -H host -o output.png
> 
> $ flent --version
> Flent v1.0.1.
> Running on Python 3.5.2 (default, Oct 11 2016, 04:59:56)  [GCC 4.2.1
> Compatible Apple LLVM 8.0.0 (clang-800.0.38)].
> Using matplotlib version 2.0.1 on numpy 1.12.1.
> Using PyQt5 version 5.9.
> 
> 
> Thanks,
> Manu.
> _______________________________________________
> Flent-users mailing list
> Flent-users@flent.org
> http://flent.org/mailman/listinfo/flent-users_flent.org


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  reply	other threads:[~2017-07-31 18:14 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-07-31 17:36 Emmanuel Blot
2017-07-31 18:13 ` Sebastian Moeller [this message]
2017-07-31 20:11   ` Emmanuel Blot

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