[Bloat] Comparing bufferbloat tests (was: We built a new bufferbloat test and keen for feedback)

[Toke Høiland-Jørgensen]

Dave Collier-Brown <dave.collier-brown at indexexchange.com> writes:

> On 2020-11-05 6:48 a.m., Toke Høiland-Jørgensen via Bloat wrote:
>
> Also, holy cow, what's going on with your connection? The unloaded
> latency says 17/110/200 min/median/max RTT. Is that due to bad
> measurements, or do you have a lot of cross traffic and a really bloated
> link? :/
>
> -Toke
>
>
> The tests differ somewhat while looking at an unloaded residential link provided by a local monopoly, Rogers Cable, and mitigated by an IQrouter (my old linksys is long dead (;-))
>
> DSLReports says
>
>   *   144.7 Mb/s down
>   *   14.05 MB/s up
>   *   bufferbloat A+
>   *   downloading lag 40-100 ms

Still a pretty big span from 40-100ms; how does that turn into an A+
score, I wonder?

> Waveform says:
>
>   *   43.47 Mbps down
>   *   16.05 Mbps up
>   *   bufferbloat grade A+
>   *   unloaded latency 93.5 ms
>
> So we're reporting different speeds and RTTs. Are we using different
> units or definitions, I wonder?

Well either that, or one of the tests is just busted. My immediate guess
would be the not-yet-released prototype is the least accurate ;)
I do wonder why, though...

-Toke