From owner-freebsd-wireless@FreeBSD.ORG Mon Mar 26 06:03:54 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 15148106566C for ; Mon, 26 Mar 2012 06:03:54 +0000 (UTC) (envelope-from lytboris@gmail.com) Received: from mail-wi0-f178.google.com (mail-wi0-f178.google.com [209.85.212.178]) by mx1.freebsd.org (Postfix) with ESMTP id 8FE358FC0A for ; Mon, 26 Mar 2012 06:03:52 +0000 (UTC) Received: by wibhq7 with SMTP id hq7so3234916wib.13 for ; Sun, 25 Mar 2012 23:03:51 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=l/RrZ9AyB1xeHqdpzYe+c+BrlsvA0P3B3FYfaA/ftRU=; b=g5xH5PAFTC+uXJ3FENTRonsBux1CjSJ2utUHwW5FjjHXOfa3ZvyNkuT/2WC893E608 wZ1jcJGRS6dwoqAPHpgRCOwZ1XtLGPt5blZS/i4MRTV6fhS92MhvSRCdrkDDIR13ckyY 13ihb8QSAn5pO2v+yIVzu9Duyu4D74M45haZC9Hbl6ybErCgic+J8s/AS1G33MkoUbNJ O9y//ip0tRfnpYMn8p/YSocF3Bh1O9ZMVMBB/8/Gn5VC9XqmChHb8zAbvPZPAd8uQ2TQ 1lJoUOuKL75WRB/ivftTbdtK9+ppZJ7e6WAwGNqSkdBm7+28RF75aOFG3QneJmcMz28Q MqAA== MIME-Version: 1.0 Received: by 10.180.94.33 with SMTP id cz1mr15653379wib.13.1332741831810; Sun, 25 Mar 2012 23:03:51 -0700 (PDT) Received: by 10.223.72.6 with HTTP; Sun, 25 Mar 2012 23:03:51 -0700 (PDT) In-Reply-To: References: <4f6f67a7.4a0c440a.3941.ffffc865@mx.google.com> Date: Mon, 26 Mar 2012 10:03:51 +0400 Message-ID: From: Lytochkin Boris To: Adrian Chadd Content-Type: text/plain; charset=ISO-8859-1 Cc: "freebsd-wireless@freebsd.org" Subject: Re: [ath][CURRENT] Triangle-shaped network performance 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: Mon, 26 Mar 2012 06:03:54 -0000 On Mon, Mar 26, 2012 at 1:50 AM, Adrian Chadd wrote: > On 25 March 2012 13:41, Lytochkin Boris wrote: >> It seems I found a solution, but not the problem :) > > Why oh why did you set.. > >> Reverting bintval to it's default value (1000 -> 100) helped a lot: > > Why'd you do this? > > 10 beacons a second is fine. 100 beacons a second ? bintval = 1000 is 1 beacon per second. Actually I was sure that Cisco AP have this setting at 3k. >> triangle-shaped ping disappeared. I wonder why that ever happen. >> The last thing to fix is idle pings. They are not so good: ~50ms (1ms >> while in transfer). > > That almost feels like some weird interrupt handling issue. Any ideas how to proove this theory? -- Boris Lytochkin