From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ua0-x236.google.com (mail-ua0-x236.google.com [IPv6:2607:f8b0:400c:c08::236]) (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 7A7A83B2A0; Sun, 14 Aug 2016 18:49:13 -0400 (EDT) Received: by mail-ua0-x236.google.com with SMTP id 97so52345016uav.3; Sun, 14 Aug 2016 15:49:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc; bh=Zxb2amu54VR9yx6KjCVN8vtOV88RfCOy+AtTiMHnfFQ=; b=VtdlBd4TiQ017wlDqE2Gdw66BiXw2qnFvX5Kk2w32wUAoVNQ3Hva9ugF76PkqoMxlU Pi+j239RuWlEhWCE5CXn8nqvOdAU8LsV2DoT4q87Q/UAOnwFa9m9tJXd6m3jco9/cZX2 nMJ4SC8D230yz0miFP2E1Au5iEkzSxmxzbFusPpmMFhIFYVeEvdQrfMmby7uQVk4qOZb U9VbIKf9YSG9pwGqmiM/FhgfzDsxSRFappVPq7Ny973AVmAF7g7GBID4DmaI6g7ARWvV PKzC+ucZDRw5tEbouaPVnnwu1MCD20zE5bhHwQzfRKwaEEn1Dp1DtR2aCNfXMekoqqMz DSNw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:from:date :message-id:subject:to:cc; bh=Zxb2amu54VR9yx6KjCVN8vtOV88RfCOy+AtTiMHnfFQ=; b=kbdJiScfNGWeEE5BdSpQ7vnxNmryhpFe88DV73jMjmX0elhEHVyOGennNCalErbqgh 4gIpm1qrSj+hI6DgSA9Xnd+eDoRzik+mFZ3gAqi1aBHw5XGAMuzbQr6YMjsdG9ewu0Ji 0yu1SmxllX8kq2s5GBWy4TKijNXHK6M/eIudeTWCz+R9F1UtoRqV6+GX4Fzq4o5V6Oet 6SAQhGFtH7P8ddy9pB6vUNgOvu1cZx/3l6qErU7CHskX7KhA6OQXtHl+v91OHlu41H4J pMmJ3I/GHQlB7gxg8Jh0YxcCaM/EbgLhKpRJs30BrAurDaGOxfTTl8tXKIoa4COSTBRj AdpQ== X-Gm-Message-State: AEkooutydZdmLIKTMBe5dt40gP54p9mEkZ8hZpGfFnGEIvEkEEUfvTcTkJ1xC8GHFNs4rP85Itszg2ZgZDlStQ== X-Received: by 10.31.185.9 with SMTP id j9mr12810781vkf.144.1471214953012; Sun, 14 Aug 2016 15:49:13 -0700 (PDT) MIME-Version: 1.0 Received: by 10.103.120.23 with HTTP; Sun, 14 Aug 2016 15:49:12 -0700 (PDT) In-Reply-To: References: <76eb6a6a-2f39-3b36-d4c1-04198083c0f6@gmail.com> From: Aaron Wood Date: Sun, 14 Aug 2016 15:49:12 -0700 Message-ID: To: Dave Taht Cc: Noah Causin , make-wifi-fast@lists.bufferbloat.net, Simon Wunderlich , "cerowrt-devel@lists.bufferbloat.net" , Felix Fietkau Content-Type: multipart/alternative; boundary=001a11439cbca9a290053a0fec89 Subject: Re: [Make-wifi-fast] [Cerowrt-devel] wifi airtime fairness patches could use eyeballs and testing 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, 14 Aug 2016 22:49:13 -0000 --001a11439cbca9a290053a0fec89 Content-Type: text/plain; charset=UTF-8 On Sun, Aug 14, 2016 at 3:21 PM, Dave Taht wrote: > > Ideas as to why crypto chops off so much throughput in the first place > (from 120mbit to 80), and as to what else to poke into with crypto on, > would be nice. Crypto as in WPA2? If 1 client is fine, but multiple clients is not, my guess is that changing the AES key in the crypto accelerator is slow/difficult, and so what you're seeing is the lost time as it switches security contexts. -Aaron --001a11439cbca9a290053a0fec89 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Sun, Aug 14, 2016 at 3:21 PM= , Dave Taht <dave.taht@gmail.com> wrote:

Ideas as to why crypto chops off so much throughput in the first place
(from 120mbit to 80), and as to what else to poke into with crypto on,
would be nice.

Crypto as in WPA2?=C2=A0 If 1 cli= ent is fine, but multiple clients is not, my guess is that changing the AES= key in the crypto accelerator is slow/difficult, and so what you're se= eing is the lost time as it switches security contexts.

= -Aaron=C2=A0
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