From owner-freebsd-current@FreeBSD.ORG Sat Sep 24 05:38:33 2011 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34]) by hub.freebsd.org (Postfix) with ESMTP id E46F0106564A; Sat, 24 Sep 2011 05:38:33 +0000 (UTC) (envelope-from adrian.chadd@gmail.com) Received: from mail-yw0-f54.google.com (mail-yw0-f54.google.com [209.85.213.54]) by mx1.freebsd.org (Postfix) with ESMTP id 940698FC0C; Sat, 24 Sep 2011 05:38:33 +0000 (UTC) Received: by ywp17 with SMTP id 17so4031292ywp.13 for ; Fri, 23 Sep 2011 22:38:33 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=mime-version:sender:in-reply-to:references:date :x-google-sender-auth:message-id:subject:from:to:cc:content-type; bh=6e9hDOLfVU1/Sn9nPJIUe/uMEbaXDBwEJft89FQsuhA=; b=sKQj/Pc9udQE2evb5M47LyGv7FKzWqrZSlppQP1JW8Jj6Xt4P674eimcmFOhyQNhp7 ADDy282GncEmlsytl1j/f0BMqWgAokqz9Z/Yqcdd3NXJr5iAfqU7cvKB3A56p92oyD+d 227OookQvkYPR2saEShh4q8IlDQskovgfpMeY= MIME-Version: 1.0 Received: by 10.236.79.72 with SMTP id h48mr27226931yhe.4.1316842712883; Fri, 23 Sep 2011 22:38:32 -0700 (PDT) Sender: adrian.chadd@gmail.com Received: by 10.236.111.42 with HTTP; Fri, 23 Sep 2011 22:38:32 -0700 (PDT) In-Reply-To: <4E7D6700.4080302@FreeBSD.org> References: <4E7CFC42.8000409@FreeBSD.org> <4E7D6700.4080302@FreeBSD.org> Date: Sat, 24 Sep 2011 13:38:32 +0800 X-Google-Sender-Auth: Zv8EYAFgno9YrQcW9pcY5OIeaCo Message-ID: From: Adrian Chadd To: Alexander Motin Content-Type: text/plain; charset=ISO-8859-1 Cc: freebsd-current@freebsd.org Subject: Re: ath / 802.11n performance issues and timer code X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Sat, 24 Sep 2011 05:38:34 -0000 I'll get you a trace soon. I noticed a much smaller but valid looking effect when doing this on my eeepc. If I enable idletick, I get an extra 15-25mbit/sec 11n TX throughput. kern.eventtimer.choice: LAPIC(400) i8254(100) RTC(0) kern.eventtimer.et.LAPIC.flags: 15 kern.eventtimer.et.LAPIC.frequency: 35003954 kern.eventtimer.et.LAPIC.quality: 400 kern.eventtimer.et.i8254.flags: 1 kern.eventtimer.et.i8254.frequency: 1193182 kern.eventtimer.et.i8254.quality: 100 kern.eventtimer.et.RTC.flags: 17 kern.eventtimer.et.RTC.frequency: 32768 kern.eventtimer.et.RTC.quality: 0 kern.eventtimer.periodic: 0 kern.eventtimer.timer: LAPIC kern.eventtimer.idletick: 1 kern.eventtimer.singlemul: 4 That's running r222417 -HEAD though. Thanks, adrian