From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wm1-x32b.google.com (mail-wm1-x32b.google.com [IPv6:2a00:1450:4864:20::32b]) (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 47F6A3BA8E for ; Sun, 10 Feb 2019 13:23:54 -0500 (EST) Received: by mail-wm1-x32b.google.com with SMTP id z5so13114293wmf.0 for ; Sun, 10 Feb 2019 10:23:54 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=mime-version:from:date:message-id:subject:to; bh=2UDr8BH9fscJrdAA72ycctCC74rXAeCOw2driDrY5KE=; b=XUWlrWFX9oKHskjqcdO7mwhZervit6tw/0lT6tNuNR9crRvHfGhxus31lYZyHRYOWh MYQSNB7vRxwIpNa7cWyRBxvrmU/Y5+ujtYKkbHSkO7c9nWpUDvNQrIo0Xh/6dQDM+QkP cvrUBP2qIwYVA27iQPFfwHItrGjuhJV1a2HziPAipxbgOQDWAXTs8sHxJS1UzS8X3cWI X6rxGHmbMjSFtN6l7Mx/owyWEOik7og3K0c23sC78dIsP3jDXzT/2drotNXs4n44WYNz jWKKdeoV6jhTlCns0Gi5KfdOPIuc9JpnTqSMnGBsFnopwF5i8Hr5JyPTpKU3E1iz75/m plCA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:mime-version:from:date:message-id:subject:to; bh=2UDr8BH9fscJrdAA72ycctCC74rXAeCOw2driDrY5KE=; b=Q6oe7YLNv4ahLHwyKQCJvRFnqnmZLy7L/XGZyuFi6Yw4uNKk9l7ZR7gwQbQHsptc2G Ek2vVOWpG1RC7PDlHyw7y1VgoeD/2P0PW7lwXp1jEAda4xSC8uzm0FAJNxxDWrKFIyN2 xhvm3zYQakEIhy3N0gVnj/5FK5vEZpsW/SvSANRUOKDwZW10ekF9rS4u9XhiMLyGjAOj Um4z3lz4gz5Biwb+lC8Xs2SPEGed+ZSzILQpY70wDm00sGsnrLMkGziemcLxZWn0GIoK H3bNs3b+HqbAkv+3iSPh2Hm7VMqyTeQrxICbCIzPxeC/rMkWLVyOg7R77xQfCgmk+2Lg crVg== X-Gm-Message-State: AHQUAuZzH/HdiwoQKxvD0y0NF0N9bnwj9foP2Rzf7Wm9Z2pph1md74/Y W0GCKHdnB0Sf7Qg+X/OM4OVidHGsZWK4JFqtGea/Tw== X-Google-Smtp-Source: AHgI3IY08NYo4jcz/b9WmELUZZwpJ8CcEF0E9n/cylZrlVdVA6JtJX3Mf43UocjULzjqqP4I66rCku7GL1d0ogaLQ/g= X-Received: by 2002:adf:f28f:: with SMTP id k15mr5021715wro.272.1549823033151; Sun, 10 Feb 2019 10:23:53 -0800 (PST) MIME-Version: 1.0 From: Jon Pike Date: Sun, 10 Feb 2019 10:23:42 -0800 Message-ID: To: make-wifi-fast@lists.bufferbloat.net Content-Type: multipart/alternative; boundary="0000000000005b167205818e4b84" Subject: [Make-wifi-fast] bloated ath10k, extra latency at lower rates? 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: Sun, 10 Feb 2019 18:23:54 -0000 --0000000000005b167205818e4b84 Content-Type: text/plain; charset="UTF-8" This might be a good time to mention an observation I've seen that's related to this. I have noticed about the same as reported, 10's down to single digits on my ath9k radios, and a similar 20ms-30ms on the ath10k's. Thats at high signal strength and the highest data rates. But, I've also noticed that it's different if you get farther out in range, and you end up on the slower signaling speeds. Under those conditions, I'm seeing the ath9k latency rise only slightly, maybe to 20-30ms, while the ath10k will go up more drastically, like a continuous 100-150ms or more. Been meaning to mention it to see if it should be considered as an issue. Haven't dug too deeply to quantify this much yet, and have been going thru different setup changes, versions of OpenWrt, etc which complicates things. Current setup is C7's as dumb AP's, with a Zotac x86 box doing routing. Have had 17.01.6, 18.06.1, 18.06.2, and recent snapshot on these, with their various vintages of drivers and associated code. Couldnt tell you as of now if all of the above versions have the behavior or not. Willing to investigate more if its thought important. --0000000000005b167205818e4b84 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable
This might be a good time to mention an observation I'= ;ve seen that's related to this.

I have noticed about the same as reported,=C2=A0 10's down to si= ngle digits on my ath9k radios, and a similar 20ms-30ms on the ath10k's= .=C2=A0 Thats at high signal strength and the highest data rates.=C2=A0 But= , I've also noticed that it's different if you get farther out in r= ange, and you end up on the slower signaling speeds.=C2=A0=C2=A0

Under those conditions, I'm se= eing the ath9k latency rise only slightly, maybe to 20-30ms, while the ath1= 0k will go up more drastically,=C2=A0 like a continuous 100-150ms or more.= =C2=A0 Been meaning to mention it to see if it should be considered as an i= ssue.

Haven't dug to= o deeply to quantify this much yet,=C2=A0 and have been going thru differen= t setup changes, versions of OpenWrt, etc which complicates things.=C2=A0= =C2=A0

Current setup is = C7's as dumb AP's, with a Zotac x86 box doing routing.=C2=A0 Have h= ad 17.01.6, 18.06.1, 18.06.2, and recent snapshot on these, with their vari= ous vintages of drivers and associated code.=C2=A0=C2=A0

Couldnt tell you as of now if all of the a= bove versions have the behavior or not.=C2=A0 Willing to investigate more i= f its thought important.
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