Ath10k airtime fairness. Aug 20, 2019 · ath11k is a new driver for Qualcomm IEEE 802. It is been a while since mac80211 TXQ discussion started. I know that mwlwifi is: Out-of-tree Dead, the Marvell Wireless business unit doesn't exist anymore (bought This patch set is my first pass at attempting to add an airtime fairness enforcing scheduler to ath9k (for use in access point mode). Three main APIs are defined for TXQ scheduling. Information About Air Time Fairness Cisco Air Time Fairness (ATF) allows network administrators to group devices of a defined category and enables some groups to receive traffic from the WLAN more frequently than the other groups. ath10k covers pretty much all the Qualcomm QCA chips. I have no interest compiling back in the ATF code in ath10k-firmware, it was sketchy at best. Jul 14, 2013 · ath10k is the mac80211 wireless driver for Qualcom Atheros QCA988x family of chips, which support IEEE 802. threshold of 5000, limits per AC 0/5000). In this paper, it is demonstrated that current airtime fair scheduling results in unfairness in reality because overheads are Firmware interface changes are in progress. Hussain，N. Normal temperatures, known good hardware Behavior: After the crash, wireless was spotty/dropping packets, from what I could tell - came back why cant ath10k provide a stable latency especially when qos is used? ath10k has airtime fairness as well, & fq_codel in mac80211 has already been showed working with ath10k. When this feature is enabled you are supposed to get higher speeds and more predictable internet experience while reducing high ping rates. This way, it seems > that the STAs start competing again for the airtime, and their behaviour > follows the airtime weights. I am using a rt-ac57u (MediaTek MT7603EN + MediaTek MT7612EN WiFi chips), and 21. I suspect this is where the r7800 reports it's airtime (i. The slower Wi-Fi devices can be slow from either long physical distance, weak signal strength, or simply being a legacy device using an older standard. Whether in an office environment or a bustling household with multiple devices, ensuring that each device gets a fair share of the network can be a challenge. At least the Here is the consolidated series of mac80211, ath9k and ath10k changes for moving TXQ scheduling and airtime fairness into mac80211 and support airtime fairness. Great job on getting the airtime fairness > scheduling framework done! Great, thanks for checking! Have another patch to test on top of this series, then we should look into getting the airtime queue limit patch into mac80211 as well :) -Toke Feb 9, 2022 · Airtime fairness (on openwrt) will likely still be present and working (EDIT see this), just some functionality is lost if the ath10k wifi driver does not set NL80211_EXT_FEATURE_AIRTIME_FAIRNESS. + */ + airtime = (pktlen * 8 * (1000 / 100)) / 60; /* 6M */ + airtime += IEEE80211_ATF_OVERHEAD; + } + spin_unlock_bh (&ar->data_lock); + + return airtime; +} + int ath10k_mac_tx_push_txq (struct ieee80211_hw *hw Airtime for sta/tid will be reported via htt tx-compl and rx ind messages. - Removed airtime kickout tasklet - Reworked on ieee80211_txq_may_transmit () API - Provided option to configure driver specific default airtime. Jan 8, 2018 · I was recently testing an RF optimisation feature called Air Time Fairness (ATF). Nor will I compile in more peer stats logic, since that can also be calculated at driver level and above as needed. (downloa… Transmit airtime will be estimated from last tx rate used. However, the definition of airtime is vague and simplistic. Further experiments with atk10k/11k/12k are drivers for qualcomm 802. Yeah, though there are more complex cases, e. With the caveat that there is not always a direct relation between bandwidth ratios and airtime ratios (that's the whole point with having the fairness scheduler in the first place). Transmit airtime will be estimated from last tx rate used. com>>> Transmit airtime will be estimated from last tx rate used. c (via calls to ath10k_mac_update_airtime at lines 4693, 5192, & 5521). Firmware report tx rate by peer stats. Great job on getting the airtime fairness scheduling framework done! On Tue, Jan 22, 2019 at 6:21 AM Toke Høiland-Jørgensen <toke@redhat. The purpose of ATF is to improve the client performance by enforcing an airtime limit per WLAN and/or per client. Here is the consolidated series of mac80211, > ath9k and ath10k changes for moving TXQ scheduling and airtime fairness > into mac80211 and support airtime fairness. > Well, some of the tests I did while porting ath9k to the iTXQs > indicated that for voice-like traffic we can get very close to the > same actual end-to-end latency for BE-marked traffic that we do with > VO-marked traffic. Unfortunately, WiFi lacks protocol support for Kan Yan <kyan@xxxxxxxxxx> writes: > Hi Toke, > > This patch looks good to me. Airtime is computed> on tx path and the same will be reported to mac80211 upon> tx completion. - ieee80211_next_txq - ieee80211_return_txq - ieee80211_txq_may_transmit and two APIs for synchronization when the driver wants to iterate From: Kan Yan <kyan@google. This version has a somewhat reworked scheduler (now closer to the structure of fq_codel) and a different way to measure RX airtime; and there's a debugfs entry to control which airtime measurements to include in the scheduling decisions. This is the second version of my airtime fairness patch. This txq management can be removed by migrating to mac80211 txq APIs and let mac80211 handle txqs reordering based on reported airtime. AQL keeps the firmware from overbuffering, and more important is the fq_codel algo on top that which then keeps queues short and intermixes packets better. Added “air time fairness” so that slow stations don't hog all the airtime Right Sized the buffers for all rates – even as they change! Vastly improved ability to handle > 1 stations at full data rate, with fuller and fair sharing of bandwidth Showed that fq+AQMs such as fq_codel eliminate the need for most QoS settings. Airtime is computed> on tx path and the same will be reported to From: Kan Yan <kyan@google. > Firmware report tx rate by peer stats. WHAT IS ALREADY IN MAINLINE? WiFi bufferbloat reduced by an order of magnitude Almost perfect airtime fairness Support in ath9k and ath10k (partial) Linux >= 4. Mar 31, 2020 · ATF regulates airtime between stations, but needs short queues to work properly. org > References To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v3 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Mon, 12 Nov 2018 14:51:53 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1542063113-22438-1-git-send-email To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Wed, 26 Sep 2018 17:41:14 -0700 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538008874-11692-1-git-send-email-rmanohar@codeaurora. Previous by thread: [PATCH v2 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: [PATCH v2 0/6] Move TXQ scheduling and airtime fairness into mac80211 Prev by Date: Re: [PATCH v5 5/6] ath10k: migrate to mac80211 txq scheduling Next by Date: Re: [PATCH v2] ath10k: skip sending quiet mode cmd for WCN3990 Previous by thread: [PATCH v5 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: Re: [PATCH v5 0/6] Move TXQ scheduling and airtime fairness into mac80211 Index (es): Date Previous by thread: [PATCH 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: Re: [PATCH 0/6] Move TXQ scheduling and airtime fairness into mac80211 Here is the consolidated series of mac80211, ath9k and ath10k changes for moving TXQ scheduling and airtime fairness into mac80211 and support airtime fairness. 11ac/ax/be chips respectively and they are FOSS with respect to the kernel but have proprietary firmware. 11ac chips. This change is based on Kan's orginal commit in Chromium tree ("CHROMIUM: ath10k: Implementing airtime fairness based TX scheduler") ref: https://chromium-review To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Sat, 20 Oct 2018 04:05:34 -0700 Cc: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1540033534-11211-1-git-send-email-rmanohar@codeaurora. Jan 4, 2020 · For anyone (in the future) wanting to find the command to check that airtime fairness is running in their system, this command should return an output (ath10k and ath9k): Here is the consolidated series of mac80211, ath9k and ath10k changes for moving TXQ scheduling and airtime fairness into mac80211 and support airtime fairness. But it benefits clients as well; basically, it needs to go where the queues build, and that becomes the WiFi link as soon as the upstream internet speed increases above the effective WiFi rate Jun 22, 2022 · I am unable to tinker with my router, as it's used in a production environment, but maybe an additional data point is useful. To: Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> Subject: Re: [PATCH] ath10k: report tx airtime provided by fw From: Kalle Valo <kvalo@xxxxxxxxxxxxxx> Date: Mon, 11 Feb 2019 09:33:55 +0000 (UTC) Cc: ath10k@xxxxxxxxxxxxxxxxxxx, linux-wireless@xxxxxxxxxxxxxxx, Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> In-reply-to: < 1542298483-15879-1-git-send-email-mpubbise@codeaurora. Good deal. Prev by Date: Re: [PATCH v5 5/6] ath10k: migrate to mac80211 txq scheduling Next by Date: Re: [PATCH v2] ath10k: skip sending quiet mode cmd for WCN3990 Previous by thread: [PATCH v5 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: Re: [PATCH v5 0/6] Move TXQ scheduling and airtime fairness into mac80211 Index (es): Date Next by Date: [PATCH v3 6/6] ath10k: reporting estimated tx airtime for fairness Previous by thread: [PATCH v3 4/6] ath9k: Switch to mac80211 TXQ scheduling and airtime APIs Next by Date: [PATCH v4 6/6] ath10k: reporting estimated tx airtime for fairness Previous by thread: [PATCH v4 4/6] ath9k: Switch to mac80211 TXQ scheduling and airtime APIs Next by Date: [PATCH v2 6/6] ath10k: reporting estimated tx airtime for fairness Previous by thread: [PATCH v2 4/6] ath9k: Switch to mac80211 TXQ scheduling and airtime APIs Dec 12, 2016 · I'm running the following LEDE build on my Archer C7 v2: Lede Reboot CURRENT r2449+2 This is an airtime fairness build which has some patches applied to ath9k. Feb 24, 2024 · Are OpenWRT Airtime Fairness and the USENIX Airtime FQ function the same thing? I would use CAKE bandwidth mode shaping to build a child HQOS queue at a transmit rate a bit below the 802. Dec 19, 2018 · Re: [PATCH v5 6/6] ath10k: reporting estimated tx airtime for fairness Kalle Valo Wed, 19 Dec 2018 05:27:01 -0800 Airtime for sta/tid will be reported via htt tx-compl and rx ind messages. com> Transmit airtime will be estimated from last tx rate used. Airtime for sta/tid will be reported via htt tx-compl and rx ind messages. Especially since this is NOT a ath10k device, which points to this issue not being device specific. Also airtime tasklet approach cumbersome and causing regression in multi client performance. This ensures a low-rate (slow) station does not use up all the airtime (the so-called "WiFi anomaly"). We evaluate our solution using both a theoretical model and experiments in a testbed environment, formulating a suitable analytical model in the process. e. Airtime Fairness is a technology that attempts to address this challenge, promoting an efficient and balanced network Apr 12, 2025 · L’Airtime Fairness est une fonctionnalité technologique présente dans les routeurs modernes visant à optimiser les performances et l’efficacité d’un réseau Wi-Fi. "Airtime" here refers to the wireless transmission time a client takes to communicate with a Wireless Access Point (AP). Feb 28, 2017 · Leveraging this queueing scheme, we then design an airtime fairness scheduler that operates at the access point and doesn't require any changes to clients. >> This change is based on Kan's orginal commit in Chromium tree> ("CHROMIUM: ath10k: Implementing airtime Hi Toke, This patch looks good to me. Here is the consolidated series of mac80211, ath9k and ath10k changes for moving TXQ scheduling and airtime fairness into mac80211 and support airtime fairness. Sep 19, 2024 · This page is intended to describe the support status, capabilities and functional restrictions (if any) of ath11k, the mac80211 based driver for Qualcomm AX devices. Here is the consolidated series of mac80211,>> ath9k and ath10k changes for moving TXQ scheduling and airtime fairness>> into mac80211 and support airtime fairness. 6 released March 2020. Many IoT radios still use a 11b/g radio since high bandwidth is not a requirement. … The airtime fairness sched-uler achieves close to perfect sharing of airtime in the case of uni-directional traffic, with a slight dip for bidirectional traffic. Mar 2, 2025 · Airtime Fairness（发送时间公平性）技术是一种用于优化无线局域网性能的技术，特别是在多客户端环境下，能够提高整个网络的传输效率和公平性。该技术通过调整各个客户端的服务时间，确保高性能设备在需要时能够获得更多的传输机会，从而提升整体网络的传输速度和等待时间 1 2 。 工作 The recent proposed airtime-based TxQ scheduler in the upstream mac80211 wireless driver only enforces fairness among stations, but does not enforce an airtime limit on the number of in-flight packets released to lower layer, resulting in ineffective CoDEL operation and long latency due to bloated firmware queue when the link is oversubscribed. HQOS is typically used to built a parent queue that (in this case) holds all the 802. Both exist currently only in master and have not (yet?) been back-ported to the 19. Hi Toke, This patch looks good to me. Jun 30, 2020 · This may be a mac80211 air-time-fairness issue, not sure it is related to ath10k at all. Airtime is computed on tx path and the same will be reported to mac80211 upon tx completion. 11 per-client queues. 3 Likes Ipq806x NSS build (Netgear R7800 / TP-Link C2600 / Linksys EA8500) quarky June 17, 2022, 1:09am 421 nbd: From: Toke Høiland-Jørgensen <toke@toke. Airtime fairness (on 5 Ghz network) necessary or overkill? Solved! Hello all, should I enable airtime fairness on 5 Ghz network? My router is ASUS RT-AC88U and all of my devices are connected to the 5 Ghz network. An ATF-enabled access point can control the medium access based on the airtime utilization. Feb 6, 2022 · About ath11k # ath11k is a Linux driver for Qualcomm IEEE 802. To: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: Re: [PATCH v4 6/6] ath10k: reporting estimated tx airtime for fairness From: Toke Høiland-Jørgensen <toke@xxxxxxx> Date: Mon, 21 Jan 2019 10:49:35 +0100 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply Feb 9, 2019 · As WiFi grows ever more popular, airtime contention becomes an increasing problem. 02. EDIT meaning if airtime fairness is supported in your firmware, hostapd. Ath10k should be the same as a regular LEDE build. That's my ultimate hope of this thread, and the numerous other threads like this one. To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Sat, 20 Oct 2018 04:05:34 -0700 Cc: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1540033534-11211-1-git-send-email-rmanohar@codeaurora. This change is based on Kan's orginal commit in Chromium tree ("CHROMIUM: ath10k: Implementing airtime fairness based TX scheduler") ref: https://chromium-review Airtime for sta/tid will be reported via htt tx-compl and rx ind messages. This change is based on Kan's orginal commit in Chromium tree ("CHROMIUM: ath10k: Implementing airtime fairness based TX scheduler") ref: https://chromium-review From: Kan Yan <kyan@google. Meantime I thought it would be useful to use Kan's changes for ATF validation in ath10k using existing firmware. org > References To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Wed, 26 Sep 2018 17:41:14 -0700 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538008874-11692-1-git-send-email-rmanohar@codeaurora. The virtual time scheduler code has a number of issues: - queues slowed down by hardware/firmware powersave handling were not properly handled. Nov 18, 2016 · 所以简单来说，Airtime Fairness (发送时间公平性)技术通过转移部分慢速设备的服务时间给快速设备，来提高整个无线局域网的传输速度，优化等待时间，提高可用性，但使得慢速设备变得更慢。 Jun 14, 2022 · If you're using ath10k-ct and it enables airtime fairness, please change the driver like in my patch to disable the airtime fairness flag. This change is based on Kan's orginal commit in Chromium tree ("CHROMIUM: ath10k: Implementing airtime fairness based TX scheduler") ref: https://chromium-review Abstract—As WiFi grows ever more popular, airtime con-tention becomes an increasing problem. I think it disables manual setting. Version 21. 配置思路 使能Airtime调度功能，保证同一射频下的多个用户能够相对公平的占用网络带宽时间，提升总体的用户体验。 From: Kan Yan <kyan@google. Meantime I thought it would be useful to use Kan's changes Feb 26, 2022 · This obviously depends skb_cb->airtime_est which appears to be set in ath10k-5. e processing N frames per txq is removed. 9 Linux < 4. - 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 . Here is the consolidated series of mac80211, ath9k and ath10k changes to move TXQ scheduling and airtime Rajkumar Manoharan 2018-11-09 23:16:55 UTC Here is the consolidated series of mac80211, ath9k and ath10k changes for moving TXQ scheduling and airtime fairness into mac80211 and support To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v3 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Mon, 12 Nov 2018 14:51:53 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1542063113-22438-1-git-send-email Rajkumar Manoharan <rmanohar@codeaurora. 15\mac. > Firmware report tx rate by peer stats. The major changes w. Airtime of BC/MC frames + * in 2G get some discount, which helps prevent very low rate + * frames from being blocked for too long. If you want finer control, look for a Candela Tech based QCA chip and use the CT driver and firmware, this in itself improves many things over QC drivers and firmware. Great job on getting the airtime fairness scheduling framework done! On Tue, Jan 22, 2019 at 6:21 AM Toke Høiland-Jørgensen <toke@xxxxxxxxxx> wrote: > > From: Kan Yan <kyan@xxxxxxxxxx> > > Transmit airtime will be estimated from last tx rate used. This change is based on Kan's orginal commit in Chromium tree ("CHROMIUM: ath10k: Implementing airtime fairness based TX scheduler") ref: https://chromium-review Transmit airtime will be estimated from last tx rate used. AIRTIME FAIRNESS - prioritises faster connections over legacy/slow connections. By doing this, txq fairness maintained in ath10k i. 07 branch. with hardware A-MSDU deaggregation like in ath10k. sh will pick that up and configure it automatically. Firmware interface changes are in progress. Sent to the devel list. com> wrote: >> From: Kan Yan <kyan@google. r. Is system unstable in any way you can notice? Plz post this to openwrt mailing list, though we can keep the bug open here as well. Great job on getting the airtime fairness > scheduling framework done! Great, thanks for checking! Have another patch to test on top of this series, then we should look into getting the airtime queue limit patch into mac80211 as well :) -Toke Previous by thread: [PATCH v2 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: [PATCH v2 0/6] Move TXQ scheduling and airtime fairness into mac80211 From: Toke Høiland-Jørgensen <toke@toke. Manikanta Pubbisetty 2018-11-15 16:14:43 UTC Permalink If supported, update transmit airtime in mac80211 with the airtime Which means all station deficits will keep increasing, erasing the fairness throttling > - Indeed, I was able to activate the airtime scheduler by fixing lower AQL > limits (e. :) Here is the consolidated series of mac80211, ath9k and ath10k changes to move TXQ scheduling and airtime fairness into mac80211. - 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 Mar 18, 2024 · In our increasingly connected world, the fairness of network distribution often becomes a critical consideration. The purpose of this thread is to continue digging into some recent observations I've made regarding the r7500v2 wifi performance (configured as an AP only) with multiple clients as measured with netperf (see posts here a… Feb 26, 2024 · Airtime Fairness (ATF) to give each wireless client a fair share of the airtime as opposed to the number of bytes sent/received with ordinary Wi-Fi drivers. To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH] ath10k: report tx airtime provided by fw From: Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> Date: Thu, 15 Nov 2018 21:44:43 +0530 Cc: linux-wireless@xxxxxxxxxxxxxxx, Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH] ath10k: report tx airtime provided by fw From: Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> Date: Thu, 15 Nov 2018 21:44:43 +0530 Cc: linux-wireless@xxxxxxxxxxxxxxx, Manikanta Pubbisetty <mpubbise@xxxxxxxxxxxxxx> Apr 30, 2024 · Yet, how many of them publish latency reduction (AQL, BQL, Airtime Fairness, etc. I'll see if i can't check if there is a value for airtime_est (on the r7500v2) with a debug line. 11ax devices, first supporting only IPQ8074 SoC using the shared memory AHB bus. t 5th RFC version are in may_transmit () API. 2 will randomly start to experience Jan 29, 2019 · Airtime Fairness is an optimization technique used to improve the overall transmission efficiency of a wireless network. ) figures? The majority of consumers don't realize that the "fast" they feel is more a product of lower latency than higher bandwidth. Dec 8, 2021 · Please see if that can somehow be enabled for ath10k-ct. 11ac. 11 transmit rate for the AP to wifi client adjacency. Jun 18, 2022 · The airtime fairness scheduler implementation is limited to the ath9k driver, as the ath10k driver lacks the required scheduling hooks. Air Time Fairness is a feature that is provided by many wireless network manufacturers (Meru Networks ath10k driver # Building # To build ath10k enable these kernel build configuration options, for example with make menuconfig: CONFIG_ATH10K CONFIG_ATH10K_PCI CONFIG_ATH10K_DEBUG (optional) CONFIG_ATH10K_DEBUGFS (optional) CONFIG_ATH10K_TRACING (optional) The debug and tracing options are optional, but it’s strongly recommended to enable to make it easier to debug issues. - Bundled ath10k changes along with this series. 11-rc1 released on 2013-07-14. Airtime is computed> on tx path and the same will be reported to From: Kan Yan <kyan@xxxxxxxxxx> Transmit airtime will be estimated from last tx rate used. ath10k options can The virtual time scheduler code has a number of issues: - queues slowed down by hardware/firmware powersave handling were not properly handled. May 11, 2023 · Airtime Fairness has been giving everyone better internet speed and now you can see if your router brand supports this protocol. 11n (which is not used most of the time). 11ac compatible, except for one older Samsung TV that supports 802. References: [RFC 1/2] ath10k: migrate to mac80211 txq scheduling From: Rajkumar Manoharan [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan Re: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Toke Høiland-Jørgensen [RFC 1/2] ath10k: migrate to mac80211 txq scheduling From: Rajkumar Transmit airtime will be estimated from last tx rate used. org> writes: > From: Kan Yan <kyan@google. 11ax devices, supporting both AHB bus in SoC type devices and PCI. org > References From: Kan Yan <kyan@xxxxxxxxxx> Transmit airtime will be estimated from last tx rate used. One way to alleviate this is through network policy enforcement. However, if your laptops are relatively comparable and we thus tacitly assume that they are running at the same phy rate, then it does translate, and your results look promising. May 13, 2020 · 这个功能名叫“无线传输公平性”，英文名“Airtime Fairness”，如果你正使用的是华硕路由器或刷了梅林固件，设置路径为：“无线网络”→“专业 Nov 27, 2019 · (This discussion will mainly circle on mwlwifi) It's a sad state to see that some ath9k devices have more active development and longevity than some 802. org > References To: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, ath10k@xxxxxxxxxxxxxxxxxxx Subject: Re: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Toke Høiland-Jørgensen <toke@xxxxxxx> Date: Fri, 28 Sep 2018 17:25:47 +0200 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538008874-11692-2-git-send-email Airtime Fairness is a feature that boosts the overall network performance by sacrificing a little bit of network time on your slowest devices (A/B/G, even N when compared to AC). I want to attempt porting airtime fairness to my device that uses mwlwifi but I think I've already run into some roadblocks. ath11k uses mac80211 and supports AP, Station and Mesh modes. " From: Toke Høiland-Jørgensen <toke@toke. g. 1 is the last stable release for me. Most of them are 802. routers or access points) supporting this feature, it may disable 11b/g connections altogether OR lower transmission opportunity thus making a IoT device disconnect ===================== BEAMFORMING - if you Airtime fairness is ensuring both stations get an equivalent share of the link but because the latencies have grown so large, and there isn’t enough fair queuing, there’s ping packet loss. We show that our solution achieves an order of magnitude reduction in latency under load, large improvements in multi-station throughput, and nearly perfect airtime fairness for both TCP and downstream UDP traffic. It was first included in Linux 3. This Airtime fairness WiFi has a natural tendency for clients farther away or clients at lower data rates to monopolize the airtime and slow down overall performance. Airtime is computed > on tx path and the same will be reported to From: Kan Yan <kyan@google. How does that actually happen? It’s simple. From: Toke Høiland-Jørgensen <toke@toke. ath11k uses mac80211. org > References To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v3 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Mon, 12 Nov 2018 14:51:53 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1542063113-22438-1-git-send-email To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v4 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Tue, 18 Dec 2018 14:32:54 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1545172374-1072-1-git-send-email To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v5 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Tue, 18 Dec 2018 17:02:11 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1545181331-5288-1-git-send-email To: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, ath10k@xxxxxxxxxxxxxxxxxxx Subject: Re: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Toke Høiland-Jørgensen <toke@xxxxxxx> Date: Fri, 28 Sep 2018 17:25:47 +0200 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538008874-11692-2-git-send-email To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v2 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxxxx> Date: Fri, 9 Nov 2018 15:17:01 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1541805421-27309-1-git-send-email To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [RFC v2 2/2] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Fri, 28 Sep 2018 16:16:14 -0700 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538176574-5580-1-git-send-email-rmanohar@codeaurora. >> Thanks for taking care of the respin!>> Johannes, I think it's safe for you to review this version. Nov 11, 2017 · Is there a way to check\\enable\\disable it? We evaluate our solution using both a theoretical model and experiments in a testbed environment, formulating a suitable analytical model in the process. But what is this technology and when should people enable it on their routers? Many internet users of whom have the latest Nov 8, 2016 · And the companion airtime fairness work is explicitly AP-centric. On network devices (i. 9 Jul 13, 2022 · I mean the airtime fairness is technically justifiable and reasonable, and a good springboard for further development? Is it not slightly scary the length of time taken with this improved approach in terms of releases to just to try to get something close to original performance? Hope my cheeky questions don't ruffle too many feathers. ath10k has an alternative developed by candellatechnologies called ath10k_ct and is sometimes more stable Intel: Firmware for all intel wifi devices is proprietary like ath10k/11k/12k. dk> ath10k maintains common txqs list for all stations. org > References To: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, ath10k@xxxxxxxxxxxxxxxxxxx Subject: Re: [RFC 2/2] ath10k: reporting estimated tx airtime for fairness From: Toke Høiland-Jørgensen <toke@xxxxxxx> Date: Fri, 28 Sep 2018 17:25:47 +0200 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538008874-11692-2-git-send-email To: linux-wireless@xxxxxxxxxxxxxxx, ath10k@xxxxxxxxxxxxxxxxxxx Subject: [PATCH v5 6/6] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Tue, 18 Dec 2018 17:02:11 -0800 Cc: make-wifi-fast@xxxxxxxxxxxxxxxxxxxxx, Kan Yan <kyan@xxxxxxxxxx>, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> In-reply-to: < 1545181331-5288-1-git-send-email 1 概述 WiFI TDMA领域，2009年Sam Leffler在《TDMA for Long Distance Wireless Networks》首次系统提出了TDMA技术方案，并在FreeBSD上，基于Atheros公司的AR5212芯片，成功实现了IBSS架构的TDMA Demo。 I. It was first included in Linux v5. Previous by thread: Re: [PATCH v4 6/6] ath10k: reporting estimated tx airtime for fairness Next by thread: [PATCH v5 0/6] Move TXQ scheduling and airtime fairness into mac80211 Kan Yan <kyan@xxxxxxxxxx> writes: > Hi Toke, > > This patch looks good to me. Unfortunately, WiFi lacks protocol support for configuring policies for its usage, and since network-wide coordination cannot generally be ensured, enforcing policy is challenging. Whenever the driver checks deficit for given TXQ, the list will be reordered so that driver/firmware RR quickly becomes in sync with mac80211 list. May 17, 2023 · 华硕、网件等中高端路由器普及，其高级设置复杂。以“Airtime Fairness”为例，该技术可提升无线局域网传输速度，优化等待时间，适合多设备连接或信号不佳情况，但可能拖慢慢速设备。 Feb 28, 2017 · Jain's fairness index computed over the airtime fairness usage between the three stations, for UDP traffic, TCP download, and simultaneous TCP upload and download traffic. org > References From my past reading on airtime fairness setting in hostapd, I think that comment is misleading. Therefore, some groups are entitled to more air time than the other groups. greearb's comment about removing airtime calculation from the ct firmware might Airtime fairness, or time-based fairness, has been well recognized as a method to solve WiFi performance anomalies and provide a balance between fairness and spectrum efficiency in multi-rate wireless networks. At some future point - perhaps in the near future - I can bring the new code online for a few clients, as well, to see what happens. Imagine you’re on the road and, in the ideal situation, all cars would go at a similar speed, without creating any unnecessary jams. Airtime fairness helps to improve the overall network performance in these conditions. Even though ath11k has some similar code as with ath10k (especially the WMI layer) it was concluded to be simpler to have a "clean start" for ath11k code base and not try to share the code with ath10k. From: Kan Yan <kyan@google. To: ath10k@xxxxxxxxxxxxxxxxxxx Subject: [RFC v2 2/2] ath10k: reporting estimated tx airtime for fairness From: Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx> Date: Fri, 28 Sep 2018 16:16:14 -0700 Cc: linux-wireless@xxxxxxxxxxxxxxx, Rajkumar Manoharan <rmanohar@xxxxxxxxxxxxxx>, Kan Yan <kyan@xxxxxxxxxx> In-reply-to: < 1538176574-5580-1-git-send-email-rmanohar@codeaurora. May 7, 2022 · What’s the point of the Airtime Fairness? The Airtime Fairness became available on wireless routers and access point more than a decade ago as the means to prevent older devices from slowing down the network. Apr 2, 2020 · Dear team, this year patches landed in OpenWrt master that implemented AQL (airtime queue limits) for ath10K and ath10K-CT. Feb 25, 2021 · Yup, that's the idea. wvx yjcgy aebhar rydguaz flw knrixib uqlmm pfgwvh rcg ztufhmm