Hi Pete,
> On Jun 26, 2018, at 00:40, Pete Heist <p...@heistp.net> wrote:
>
> The rrul test over a point-to-point WiFi link cuts the total TCP throughput
> considerably below that of rrul_be. For example, on an 802.11n 20MHz MCS 15
> link:
>
> rrul_be: ~90mbit
> rrul: ~30-45mbit
>
I believe this is simply showing the cost of using the non-aggregating
AC_VO that also has an advantage of getting airtime, using that will
considerably lower the achievable goodput over the wifi channel. Add to this
that with RRUL both ends will send traffic that should be classified AC_VO and
the half-duplex nature of current wifi specs and there might simply be much
less total goodput available than one would fancy...
> I think this came up before, but could the standard rrul test be exceeding
> the 802.11e spec in terms of how much bandwidth it's using for some access
> categories?
Is there a standard for this?
> I haven’t found reference to this anywhere, but if so I’ll need to take that
> into account when interpreting the results. (athstats on Ubiquiti’s gear
> shows that the counters for all four categories BK, BE, VI and VO go up, so
> they appear to map evenly with DSCP values BK, BE, CS5 and EF.)
>
> Anyway I think the DSCP field is set to 0 in the backhaul I’m testing for, so
> rrul tests are probably more of a curiosity in this case...
>
> Pete
>
>
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