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authorFelix Fietkau <nbd@nbd.name>2022-06-25 23:24:05 +0200
committerJohannes Berg <johannes.berg@intel.com>2022-07-01 10:51:41 +0200
commit942741dabcb43236006f557178801ce2051e69f9 (patch)
treec6ac91b8b5081264c1fb18343f89bf0b621bc60e /.clang-format
parent7f884baae68adc85db55b97e3fc903a1f20bd1f9 (diff)
wifi: mac80211: switch airtime fairness back to deficit round-robin scheduling
This reverts commits 6a789ba679d652587532cec2a0e0274fda172f3b and 2433647bc8d983a543e7d31b41ca2de1c7e2c198. The virtual time scheduler code has a number of issues: - queues slowed down by hardware/firmware powersave handling were not properly handled. - on ath10k in push-pull mode, tx queues that the driver tries to pull from were starved, causing excessive latency - delay between tx enqueue and reported airtime use were causing excessively bursty tx behavior The bursty behavior may also be present on the round-robin scheduler, but there it is much easier to fix without introducing additional regressions Signed-off-by: Felix Fietkau <nbd@nbd.name> Acked-by: Toke Høiland-Jørgensen <toke@toke.dk> Link: https://lore.kernel.org/r/20220625212411.36675-1-nbd@nbd.name Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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