Re: [Bloat] powerboost and sqm

["Jonas Mårtensson" <martensson.jonas@gmail.com>]

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On Sat, Jun 30, 2018 at 9:46 AM Pete Heist <pete@heistp.net> wrote:

>
> On Jun 30, 2018, at 8:26 AM, Jonas Mårtensson <martensson.jonas@gmail.com>
> wrote:
>
>>
>> I played around with flent a bit, here are some example plots:
>
> https://dl.dropbox.com/s/facariwkp5x5dh1/flent.zip?dl=1
>
> The short spikes are not seen with flent so I'm led to believe these are
> just a result of running the "Hi-Res" dslreports test in a browser. In the
> flent rrul test, up to about 10 ms induced latency can be seen during the
> "powerboost" phase but after that it is almost zero. I'm curious about how
> this is implemented on the ISP side. If anything, sqm seems to induce a bit
> more latency during the "steady-state" phase.
>
>
> You may also want to try running flent with --socket-stats and making a
> tcp_rtt plot. You should see a significant difference in TCP RTT between
> sfq and anything that uses CoDel.
>

In case anyone is curious I tried this and the tcp rtt plot looks very
similar to the ping rtt plot, i.e. the latencies are the same.

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