[Bloat] grading bloat better

[jb]

Actually I think the concept I need is the trimmed mean.
throwing away the highest couple of values (lowest couple are not to be
thrown away because they can't be errant).
It isn't perfect but it would help.

On Thu, Oct 13, 2016 at 11:39 AM, jb <justin at dslr.net> wrote:

> 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 at 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
>> _______________________________________________
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>> Bloat at lists.bufferbloat.net
>> https://lists.bufferbloat.net/listinfo/bloat
>>
>
>
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