From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-io1-xd34.google.com (mail-io1-xd34.google.com [IPv6:2607:f8b0:4864:20::d34]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by lists.bufferbloat.net (Postfix) with ESMTPS id 8322F3B29E for ; Sat, 16 Jan 2021 13:06:38 -0500 (EST) Received: by mail-io1-xd34.google.com with SMTP id u17so24719182iow.1 for ; Sat, 16 Jan 2021 10:06:38 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:references:in-reply-to:from:date:message-id:subject:to :cc:content-transfer-encoding; bh=58qO9rGd87C4BP8o1MreBf6/hN5+9PUGfjKt8aYdIHM=; b=T2/I6h7nDy1Hhpt4LVI16ajNTPFkrs8ZMxYA+XI4ZfRO36UiEPho024HWsPKVKn7yZ 336tiPsEwnZsm1dBk312dMKLUSuzdY4CFQ4lIva984kZtw+QPUbD1dbBq0R9LCyHIKuL WX5R8oPwtoPEn+R5+ZHR7MyqNnzy3bZKpf3DCIXdBkZvdCCHyIZP0vJqBa4oYqv036U5 AJ371CTfs4lSw4SSPUId+t+rHxZ30ddsTzgETzTOm3T1G9g9DRifMTAWiry1XnV9UORX dpH+tYzY1pVZ7Wct0HZcvZ2CJgxf4nwSkAarRUPLs7xR03pdHqnRAXLgXYfLfW9lTeUz 0F6A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:references:in-reply-to:from:date :message-id:subject:to:cc:content-transfer-encoding; bh=58qO9rGd87C4BP8o1MreBf6/hN5+9PUGfjKt8aYdIHM=; b=J1G5S1GYSYE3mSRDs6I5Mz6vj0QZaDwQq/FI6Xwf433pouc1r8SyCAfnNfYejQZyv+ 3/csbV/1FZkPFmqG0L7dV1XXSIoP+sl2WxhBsypMd5KOpzcYBfy9IIap0XLph8JBaynU Dr/Z65mJcaX+timqbTGSPQE+hOA+/ED/q3tRs9wkIP0rpe2u7s6xWCm4/LDz0VPUODJ8 2KsaHkKVoFiKZuM6rX3wyFJVDc3ZbKuVfxNQv2vvfaNrKFL5xiBIQVFHajX5Fk6nsakb 0Xjj0iB57BBgzwCqtNtkGUY82FAmP1ccuqDiIeCow+gYlfA3e2KeYGMqEKLAQrUmPx3G Vsyg== X-Gm-Message-State: AOAM532DJY5ZxsYujKAQZEL5Nyd3bIioy5fz1+7Gzaa17pHYoK+Z4OgQ HaXw8pvkKJATdg+pZB+bGfd6mOoSm5NIs8RXTqo= X-Google-Smtp-Source: ABdhPJzO3wu/EuyTJvIOgE7uax9vuRQmMxJfa6Alydh2ssRXPCYM7Uvv+fIP16kaOgpH41CQr9iKm/Am9yrHUc1g6sg= X-Received: by 2002:a6b:f107:: with SMTP id e7mr323197iog.191.1610820397977; Sat, 16 Jan 2021 10:06:37 -0800 (PST) MIME-Version: 1.0 References: <87a6tarwy3.fsf@toke.dk> In-Reply-To: From: Dave Taht Date: Sat, 16 Jan 2021 10:06:26 -0800 Message-ID: To: Michael Yartys Cc: Bob McMahon , Make-Wifi-fast Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Subject: Re: [Make-wifi-fast] Weird periodic latency X-BeenThere: make-wifi-fast@lists.bufferbloat.net X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 16 Jan 2021 18:06:38 -0000 thxz for the clarification. Also, I would really like the codel target reduced to 10ms on the upcoming release of openwrt. On Sat, Jan 16, 2021 at 10:01 AM Michael Yartys wrote: > > On Saturday, January 16th, 2021 at 18:48, Dave Taht = wrote: > > > That implies it is doing a channel scan. Dumb. > > > > https://blog.cerowrt.org/post/disabling_channel_scans/ > > > > but what you encountered seemed more disabling than that, and the > > > > ath10k is supposed to be able to do background channel scans. > > The tests where I experienced the roller-coaster high latency were the re= sult of a fluke I believe. It went away after a reboot and I wasn't readily= able to reproduce it. Also, I believe there's some confusion here since my= laptop, which was doing the background scans, has an Intel 7260AC card. at= h10k is not at fault here (might have been during the fluke, but who knows)= . > > > On Sat, Jan 16, 2021 at 6:47 AM Michael Yartys > > > > michael.yartys@protonmail.com wrote: > > > > > I'm pretty sure I've managed to figure out what causes the short shar= p periodic latency spikes. The Gnome location service uses the surrounding = wireless networks as one of the methods to determine your location. When it= 's turned on I get the following results: > > > > > > https://imgur.com/a/pNXuVRe > > > > > > When it's disabled the latency spikes are gone (and notice that AQL i= s working here as there is some background traffic from other clients): > > > > > > https://imgur.com/a/v4wWkAC > > > > > > Now, I wasn't able to reproduce the weird roller coaster like latency= that I saw previously. I rebooted the laptop before I did these tests, so = I guess that solved it. > > > > > > Michael > > > > -- > > > > "For a successful technology, reality must take precedence over public > > > > relations, for Mother Nature cannot be fooled" - Richard Feynman > > > > dave@taht.net CTO, TekLibre, LLC Tel: 1-831-435-0729 --=20 "For a successful technology, reality must take precedence over public relations, for Mother Nature cannot be fooled" - Richard Feynman dave@taht.net CTO, TekLibre, LLC Tel: 1-831-435-0729