Kan Yan <kyan@xxxxxxxxxx> 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? >> >> >> Also: >> >> --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 > drop. It would be interesting to get some samples of the actual sojourn time as seen by CoDel in mac80211. Might be doable with bpftrace... -Toke
