[Make-wifi-fast] [PATCH v8 0/2] Implement Airtime-based Queue Limit (AQL)
toke at redhat.com
Wed Nov 20 05:14:08 EST 2019
Kan Yan <kyan at google.com> writes:
>> Those were lovely, thanks!!!! Big win. Since you are on patch v10
>> now.... Any chance you could turn ecn on and off and give it a go
>> again in your next test run?
>> --step-size=.04 --socket-stats # the first is helpful to gain more
>> detail, the second as to the behavior of the tcp stack.
> Thanks for the feedback! I will do more tests in a few days.
>> Secondly - and AFTER this patchset stablizes, I'd like us to look into
>> returning the codel default to 10ms or less
>> from it's currently 20ms or worse setting. Tis another easy test
> Smaller CoDel "target" doesn't work well with wireless because the
> dequeue behavior in wireless driver is very bursty. It is quite often
> dequeues dozens of packets in one burst after one large aggregation is
> completed, so smaller CoDel "target" can cause unnecessary packet
It would be interesting to get some samples of the actual sojourn time
as seen by CoDel in mac80211. Might be doable with bpftrace...
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