From: jb <justin@dslr.net>
To: Dave Taht <dave.taht@gmail.com>
Cc: bloat <bloat@lists.bufferbloat.net>
Subject: Re: [Bloat] grading bloat better
Date: Thu, 13 Oct 2016 11:39:34 +1100 [thread overview]
Message-ID: <CAH3Ss94mESLO_z7uxcvC_LR7V=H-igMYvkws9rS5pubPKVvzLg@mail.gmail.com> (raw)
In-Reply-To: <CAA93jw4X22S-pQ5Bc_PUB-iXfJZgatsY13JuGt9Bdysh5FNq-A@mail.gmail.com>
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A while ago I changed from mean to median with the reasoning being that one
spike to a crazy level was not representative of bloat but instead
representative of a network stall or other anomaly. Graphs that were nearly
all good samples with one outlier were being unfairly graded poorly.
But this example has the opposite issue - the median of this set of samples
is the first half where everything is ok. Hence the good score. Using a
mean would be correct for this sample.
What should happen is to throw away a couple (max) outliers first, then do
a mean to avoid punishing the results that come in as good but include one
errant measurement.
thanks
-Justin
On Wed, Oct 12, 2016 at 11:16 PM, Dave Taht <dave.taht@gmail.com> wrote:
> This has major bloat happening at the end of the upload test. Which
> worries me - here, at a gbit.
>
> http://www.dslreports.com/speedtest/5284047
>
> --
> Dave Täht
> Let's go make home routers and wifi faster! With better software!
> http://blog.cerowrt.org
> _______________________________________________
> Bloat mailing list
> Bloat@lists.bufferbloat.net
> https://lists.bufferbloat.net/listinfo/bloat
>
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next prev parent reply other threads:[~2016-10-13 0:39 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-12 12:16 Dave Taht
2016-10-13 0:39 ` jb [this message]
2016-10-13 0:46 ` jb
2016-10-13 0:57 ` jb
2016-10-13 3:22 ` Dave Taht
2016-10-13 4:37 ` Jonathan Morton
2016-10-14 22:48 ` jb
2016-10-15 4:39 ` Dave Taht
2016-10-15 5:35 ` Jonathan Morton
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