From owner-freebsd-net@FreeBSD.ORG  Thu Nov 11 00:47:20 2010
Return-Path: <owner-freebsd-net@FreeBSD.ORG>
Delivered-To: freebsd-net@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id 5B698106566C
	for <freebsd-net@freebsd.org>; Thu, 11 Nov 2010 00:47:20 +0000 (UTC)
	(envelope-from freebsd-net@m.gmane.org)
Received: from lo.gmane.org (lo.gmane.org [80.91.229.12])
	by mx1.freebsd.org (Postfix) with ESMTP id 10D7E8FC16
	for <freebsd-net@freebsd.org>; Thu, 11 Nov 2010 00:47:19 +0000 (UTC)
Received: from list by lo.gmane.org with local (Exim 4.69)
	(envelope-from <freebsd-net@m.gmane.org>) id 1PGLJu-0005rq-Ou
	for freebsd-net@freebsd.org; Thu, 11 Nov 2010 01:47:18 +0100
Received: from cpe-188-129-99-141.dynamic.amis.hr ([188.129.99.141])
	by main.gmane.org with esmtp (Gmexim 0.1 (Debian))
	id 1AlnuQ-0007hv-00
	for <freebsd-net@freebsd.org>; Thu, 11 Nov 2010 01:47:18 +0100
Received: from ivoras by cpe-188-129-99-141.dynamic.amis.hr with local (Gmexim
	0.1 (Debian)) id 1AlnuQ-0007hv-00
	for <freebsd-net@freebsd.org>; Thu, 11 Nov 2010 01:47:18 +0100
X-Injected-Via-Gmane: http://gmane.org/
To: freebsd-net@freebsd.org
From: Ivan Voras <ivoras@freebsd.org>
Date: Thu, 11 Nov 2010 01:47:02 +0100
Lines: 12
Message-ID: <ibfeec$qt$1@dough.gmane.org>
References: <20101110110428.GA3505@traktor.dnepro.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
X-Complaints-To: usenet@dough.gmane.org
X-Gmane-NNTP-Posting-Host: cpe-188-129-99-141.dynamic.amis.hr
User-Agent: Mozilla/5.0 (X11; U; FreeBSD amd64; en-US;
	rv:1.9.2.12) Gecko/20101102 Thunderbird/3.1.6
In-Reply-To: <20101110110428.GA3505@traktor.dnepro.net>
Subject: Re: igb dual-port adapter 1200Mbps limit - what to tune?
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-net>,
	<mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 11 Nov 2010 00:47:20 -0000

On 11/10/10 12:04, Eugene Perevyazko wrote:

> CPU is E5620@2.4GHz, 8 cores, irqs bound to different cores skipping HT ones.

Unless you need the CPU cores for other tasks on the server, they won't 
help you with network throughput here. Faster but fewer cores might.

> Tried 2 queues and 1 queue per iface, neither hitting cpu limit.

Are you sure you are not hitting the CPU limit on individual cores? Have 
you tried running "top -H -S"?