Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx> wrote: > txqs_lock is interfering with wake_tx_queue submitting more frames. > so queues don't get filled in and don't keep firmware/hardware busy > enough. This change helps to reduce the txqs_lock contention and > wake_tx_queue() blockage to being possible in txrx_unref(). > > To reduce turn around time of wake_tx_queue ops and to maintain fairness > among all txqs, the callback is updated to push first txq alone from > pending list for every wake_tx_queue call. Remaining txqs will be > processed later upon tx completion. > > Below improvements are observed in push-only mode and validated on > IPQ4019 platform. With this change, in AP mode ~10Mbps increase is > observed in downlink (AP -> STA) traffic and approx. 5-10% of CPU > usage is reduced. > > Major improvement is observed in 1-hop Mesh mode topology in 11ACVHT80. > Compared to Infra mode, CPU overhead is higher in Mesh mode due to path > lookup and no fast-xmit support. So reducing spin lock contention is > helping in Mesh. > > TOT +change > -------- -------- > TCP DL 545 Mbps 595 Mbps > TCP UL 555 Mbps 585 Mbps > > Signed-off-by: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx> Thanks, 1 patch applied to ath-next branch of ath.git: 83e164b7679d ath10k: improve wake_tx_queue ops performance -- Sent by pwcli https://patchwork.kernel.org/patch/9286083/
