From owner-freebsd-wireless@FreeBSD.ORG Sun Aug 26 22:31:00 2012 Return-Path: Delivered-To: freebsd-wireless@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id CAE0F106566B; Sun, 26 Aug 2012 22:31:00 +0000 (UTC) (envelope-from lev@FreeBSD.org) Received: from onlyone.friendlyhosting.spb.ru (onlyone.friendlyhosting.spb.ru [IPv6:2a01:4f8:131:60a2::2]) by mx1.freebsd.org (Postfix) with ESMTP id 8B04A8FC14; Sun, 26 Aug 2012 22:31:00 +0000 (UTC) Received: from lion.home.serebryakov.spb.ru (unknown [IPv6:2001:470:923f:1:b893:d73f:3750:2064]) (Authenticated sender: lev@serebryakov.spb.ru) by onlyone.friendlyhosting.spb.ru (Postfix) with ESMTPA id 5526C4AC2D; Mon, 27 Aug 2012 02:30:59 +0400 (MSK) Date: Mon, 27 Aug 2012 02:30:58 +0400 From: Lev Serebryakov X-Priority: 3 (Normal) Message-ID: <28580886.20120827023058@serebryakov.spb.ru> To: Adrian Chadd In-Reply-To: References: <615742287.20120827022102@serebryakov.spb.ru> MIME-Version: 1.0 Content-Type: text/plain; charset=windows-1251 Content-Transfer-Encoding: quoted-printable Cc: freebsd-wireless@freebsd.org Subject: Re: Best Mini PCI_e_ Atheros card with a, b, g, n and 2x2 MIMO? Or, at least, good one? X-BeenThere: freebsd-wireless@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Discussions of 802.11 stack, tools device driver development." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sun, 26 Aug 2012 22:31:00 -0000 Hello, Adrian. You wrote 27 =E0=E2=E3=F3=F1=F2=E0 2012 =E3., 2:26:08: AC> If you manage to get an 11n NIC for your soekris and you can bring up I have one :) And it works great now. But system hangs up under 802.11n load (I suspect overheat, really). And 40Mbit wire-2-wire transfer with lots of stream (torrents) kills any wifi transfer, mostly due to high interrupt rate on old PCI-based 1G Intel card (it shows about 4K interrupts per second, with interrupt moderation enabled!). But only System -> em0 transfer (Download from server's point of view). I'm investigating this now and post all my results to current@ and net@. AC> hwpmc in your nanobsd build, we can start doing some performance AC> measurements. I'd really, really like some CPU utilisation traces on AC> embedded hardware so we can speed things up. I'm not sure, that Geode has hwpmc at all. I found this: http://www.freebsd.org/cgi/query-pr.cgi?pr=3D156540 It looks, like there is no hwpmc for this old embedded CPU. --=20 // Black Lion AKA Lev Serebryakov