From owner-freebsd-current@FreeBSD.ORG  Wed Nov 30 18:01:30 2011
Return-Path: <owner-freebsd-current@FreeBSD.ORG>
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 59846106566C
	for <freebsd-current@freebsd.org>; Wed, 30 Nov 2011 18:01:30 +0000 (UTC)
	(envelope-from pyunyh@gmail.com)
Received: from mail-iy0-f182.google.com (mail-iy0-f182.google.com
	[209.85.210.182])
	by mx1.freebsd.org (Postfix) with ESMTP id 162C08FC15
	for <freebsd-current@freebsd.org>; Wed, 30 Nov 2011 18:01:29 +0000 (UTC)
Received: by iakl21 with SMTP id l21so1727060iak.13
	for <multiple recipients>; Wed, 30 Nov 2011 10:01:29 -0800 (PST)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma;
	h=from:date:to:cc:subject:message-id:reply-to:references:mime-version
	:content-type:content-disposition:in-reply-to:user-agent;
	bh=pfi/C7BCe3M5JJeaVQwtRNoAqtIu/61CkoRmmAePr2s=;
	b=D9hRZM7vVm/TZ9dfdBQ+ZeyQlIDsaXCD/2I6vdQtPifjHM4GUffR3GpiEo2ITsE9zp
	5SoLzfKd1R+IZKKNC8d/aZkGb59IBIWwjduixKlj5LBvBX1ciIW9z3AxCr1jsP4F5VVO
	Kv9ddEu03vCiguxkAJ9LG3o1ReBL/X+Wl+F+8=
Received: by 10.42.117.193 with SMTP id u1mr4384431icq.24.1322676089490;
	Wed, 30 Nov 2011 10:01:29 -0800 (PST)
Received: from pyunyh@gmail.com ([174.35.1.224])
	by mx.google.com with ESMTPS id v18sm10612728ibh.4.2011.11.30.10.01.26
	(version=TLSv1/SSLv3 cipher=OTHER);
	Wed, 30 Nov 2011 10:01:28 -0800 (PST)
Received: by pyunyh@gmail.com (sSMTP sendmail emulation);
	Wed, 30 Nov 2011 10:00:00 -0800
From: YongHyeon PYUN <pyunyh@gmail.com>
Date: Wed, 30 Nov 2011 10:00:00 -0800
To: Florian Wilkemeyer <fw@f-ws.de>
Message-ID: <20111130180000.GA9323@michelle.cdnetworks.com>
References: <4ED63C2D.8020209@f-ws.de>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4ED63C2D.8020209@f-ws.de>
User-Agent: Mutt/1.4.2.3i
Cc: freebsd-current@freebsd.org, davidch@freebsd.org
Subject: Re: if_bce tx / rx tick limits
X-BeenThere: freebsd-current@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
Reply-To: pyunyh@gmail.com
List-Id: Discussions about the use of FreeBSD-current
	<freebsd-current.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>, 
	<mailto:freebsd-current-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-current>
List-Post: <mailto:freebsd-current@freebsd.org>
List-Help: <mailto:freebsd-current-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-current>,
	<mailto:freebsd-current-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Wed, 30 Nov 2011 18:01:30 -0000

On Wed, Nov 30, 2011 at 03:22:37PM +0100, Florian Wilkemeyer wrote:
> Hi,
> 
> i wonder about the bce driver's  tx / rx tick limits
> (ticks and ticks_int are limited to 100; otherwise default value (80) 
> gets used)
> 
> (if_bce.c line 921 / 933 .. )
> 

I think this highly depends on firmware of controller.
David may be able to answer(CCed).

> On DragonFly BSD the values can be set much higher (such as 1000 ..)
> which would be great in a high-traffic setup.
> (On linux there's no limit too as far as i remember)
> 

No, the value should be represented with 10bits so having no limit
looks like a bug in Linux.

> 
> 
> Is there any reason why its limited down to 100?
> 
> 
> Thanks
> Florian
> 
> 
> P.S.
> I'm sorry if this was the wrong mailing list for it; i don't know whats 
> the right list for this (probably net or driver ?)