Roman, Need your help to bisect regression point. Can you try w/o CPTCFG_NET_SCH_FQ_CODEL? If it does not help, try reverting below commits which are major changes in data path. Instead of generating backports, apply revert commit on top your backports.
ath10k: combine txrx and replenish task ath10k: reuse copy engine 5 (htt rx) descriptors ath10k: cleanup copy engine receive next completion ath10k: register ath10k_htt_htc_t2h_msg_handler ath10k: speedup htt rx descriptor processing for rx_ind ath10k: cleanup amsdu processing for rx indication ath10k: remove unused fw_desc processing ath10k: copy tx fetch indication message ath10k: speedup htt rx descriptor processing for tx completion ath10k: fix null deref if device crashes early ath10k: fix pull-push tx threshold handling ath10k: fix tx hang ath10k: move mgmt descriptor limit handle under mgmt_tx ath10k: change htt tx desc/qcache peer limit config ath10k: fix HTT Tx CE ring size ath10k: implement push-pull tx ath10k: keep track of queue depth per txq ath10k: store txq in skb_cb ath10k: implement updating shared htt txq state ath10k: implement wake_tx_queue ath10k: add new htt message generation/parsing logic ath10k: add fast peer_map lookup ath10k: maintain peer_id for each sta and vif ath10k: refactor tx pending management ath10k: unify txpath decision ath10k: refactor tx code -Rajkumar ________________________________________ From: Roman Yeryomin <leroi.li...@gmail.com> Sent: Friday, April 8, 2016 10:49 PM To: Manoharan, Rajkumar Cc: ath10k@lists.infradead.org; Rajkumar Manoharan Subject: Re: ath10k performance, master branch from 20160407 Latest backports (compat-wireless) released (20160110) has codel enabled (CPTCFG_NET_SCH_FQ_CODEL=y) and there are no openwrt patches or special configuration for codel. And it runs ok. How old commit do you want me to try? Regards, Roman On 8 April 2016 at 19:41, Manoharan, Rajkumar <rmano...@qti.qualcomm.com> wrote: > That should be fine. Is codel running only for latest backports? Are there > any openwrt changes to configure codel? Can you plz try to reset master > branch to older commit and validate? > > -Rajkumar > ________________________________________ > From: Roman Yeryomin [leroi.li...@gmail.com] > Sent: Friday, April 8, 2016 9:30 PM > To: Manoharan, Rajkumar > Cc: ath10k@lists.infradead.org; Rajkumar Manoharan > Subject: Re: ath10k performance, master branch from 20160407 > > Rajkumar, > > I took backports from > git://git.kernel.org/pub/scm/linux/kernel/git/backports/backports.git, > took latest ath tree from > git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git, generated > backports-output based on ath master branch, refreshed openwrt > patches. > And saw big performance degradation. Am I doing something wrong? > > Regards, > Roman > > On 8 April 2016 at 18:34, Manoharan, Rajkumar <rmano...@qti.qualcomm.com> > wrote: >> Roman, >> >> Which backports version are you using? I don't see codel changes in >> ath.git/wireless-drivers.git. >> Hope you are using same firmware. >> >> -Rajkumar >> ________________________________________ >> From: ath10k <ath10k-boun...@lists.infradead.org> on behalf of Roman >> Yeryomin <leroi.li...@gmail.com> >> Sent: Friday, April 8, 2016 8:14 PM >> To: ath10k@lists.infradead.org >> Subject: ath10k performance, master branch from 20160407 >> >> Hello! >> >> I've seen performance patches were commited so I've decided to give it >> a try (using 4.1 kernel and backports). >> The results are quite disappointing: TCP download (client pov) dropped >> from 750Mbps to ~550 and UDP shows completely weird behavour - if >> generating 900Mbps it gives 30Mbps max, if generating 300Mbps it gives >> 250Mbps, before (latest official backports release from January) I was >> able to get 900Mbps. >> Hardware is basically ap152 + qca988x 3x3. >> When running perf top I see that fq_codel_drop eats a lot of cpu. >> Here is the output when running iperf3 UDP test: >> >> 45.78% [kernel] [k] fq_codel_drop >> 3.05% [kernel] [k] ag71xx_poll >> 2.18% [kernel] [k] skb_release_data >> 2.01% [kernel] [k] r4k_dma_cache_inv >> 1.73% [kernel] [k] eth_type_trans >> 1.24% [kernel] [k] build_skb >> 1.20% [mac80211] [k] ieee80211_tx_dequeue >> 1.03% [kernel] [k] __delay >> 0.98% [kernel] [k] fq_codel_enqueue >> 0.94% [kernel] [k] __netif_receive_skb_core >> 0.93% [kernel] [k] skb_release_head_state >> 0.88% [ath10k_core] [k] ath10k_htt_tx >> 0.87% [kernel] [k] __dev_queue_xmit >> 0.84% [mac80211] [k] ieee80211_tx_status >> 0.81% [kernel] [k] __build_skb >> 0.80% [mac80211] [k] __ieee80211_subif_start_xmit >> 0.77% [kernel] [k] br_handle_frame_finish >> 0.75% [kernel] [k] __qdisc_run >> 0.73% [kernel] [k] skb_recycler_consume >> 0.72% [kernel] [k] kfree_skb >> 0.72% [kernel] [k] get_page_from_freelist >> 0.69% [kernel] [k] br_fdb_update >> 0.69% [kernel] [k] br_handle_frame >> 0.67% [kernel] [k] __copy_user_common >> 0.66% [kernel] [k] __skb_flow_dissect >> 0.65% [ath10k_core] [k] ath10k_txrx_tx_unref >> 0.60% [kernel] [k] kmem_cache_alloc >> 0.60% [mac80211] [k] sta_addr_hash >> 0.56% [kernel] [k] fq_codel_dequeue >> 0.53% [kernel] [k] __local_bh_enable_ip >> 0.50% [kernel] [k] __br_fdb_get >> >> What could be the reason? >> I've seen there are some patches from Michal which touch fq_codel, >> would those help or not? >> >> >> Regards, >> Roman >> >> _______________________________________________ >> ath10k mailing list >> ath10k@lists.infradead.org >> http://lists.infradead.org/mailman/listinfo/ath10k _______________________________________________ ath10k mailing list ath10k@lists.infradead.org http://lists.infradead.org/mailman/listinfo/ath10k
