From owner-freebsd-questions@FreeBSD.ORG  Fri Jul 22 20:26:36 2011
Return-Path: <owner-freebsd-questions@FreeBSD.ORG>
Delivered-To: questions@freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:4f8:fff6::34])
	by hub.freebsd.org (Postfix) with ESMTP id A5818106566B
	for <questions@freebsd.org>; Fri, 22 Jul 2011 20:26:36 +0000 (UTC)
	(envelope-from mwlucas@bewilderbeast.blackhelicopters.org)
Received: from bewilderbeast.blackhelicopters.org
	(mwlucas-2-pt.tunnel.tserv9.chi1.ipv6.he.net
	[IPv6:2001:470:1f10:b9c::2])
	by mx1.freebsd.org (Postfix) with ESMTP id 46E198FC16
	for <questions@freebsd.org>; Fri, 22 Jul 2011 20:26:36 +0000 (UTC)
Received: from bewilderbeast.blackhelicopters.org (localhost [127.0.0.1])
	by bewilderbeast.blackhelicopters.org (8.14.4/8.14.4) with ESMTP id
	p6MKQZaQ057156; Fri, 22 Jul 2011 16:26:35 -0400 (EDT)
	(envelope-from mwlucas@bewilderbeast.blackhelicopters.org)
Received: (from mwlucas@localhost)
	by bewilderbeast.blackhelicopters.org (8.14.4/8.14.4/Submit) id
	p6MKQZ3B057155; Fri, 22 Jul 2011 16:26:35 -0400 (EDT)
	(envelope-from mwlucas)
Date: Fri, 22 Jul 2011 16:26:35 -0400
From: "Michael W. Lucas" <mwlucas@blackhelicopters.org>
To: Mike Tancsa <mike@sentex.net>
Message-ID: <20110722202635.GA57111@bewilderbeast.blackhelicopters.org>
References: <4D301C9702145855@>
	<20110721141011.GB47190@bewilderbeast.blackhelicopters.org>
	<4D7F86D5017EB3D8@>
	<20110721151210.GA47663@bewilderbeast.blackhelicopters.org>
	<4D301C9702253683@> <4E29BC1F.6060103@sentex.net>
	<20110722190821.GA55040@bewilderbeast.blackhelicopters.org>
	<4E29D37E.8070908@sentex.net>
	<20110722201034.GA56830@bewilderbeast.blackhelicopters.org>
	<4E29DA4F.9010006@sentex.net>
Mime-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <4E29DA4F.9010006@sentex.net>
User-Agent: Mutt/1.4.2.3i
X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.2.6
	(bewilderbeast.blackhelicopters.org [127.0.0.1]);
	Fri, 22 Jul 2011 16:26:35 -0400 (EDT)
Cc: questions@freebsd.org
Subject: Re: em0 NIC slow on 8.2-p1 amd64?
X-BeenThere: freebsd-questions@freebsd.org
X-Mailman-Version: 2.1.5
Precedence: list
List-Id: User questions <freebsd-questions.freebsd.org>
List-Unsubscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-questions>
List-Post: <mailto:freebsd-questions@freebsd.org>
List-Help: <mailto:freebsd-questions-request@freebsd.org?subject=help>
List-Subscribe: <http://lists.freebsd.org/mailman/listinfo/freebsd-questions>, 
	<mailto:freebsd-questions-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Fri, 22 Jul 2011 20:26:36 -0000

On Fri, Jul 22, 2011 at 04:15:11PM -0400, Mike Tancsa wrote:
> On 7/22/2011 4:10 PM, Michael W. Lucas wrote:
> > 
> > 
> >     3.65  419155.4
> 
> Thats 400Mb/s no ?   Whats the CPU in this thing ? Also your NIC version
> was 7.1.9.  RELENG_8 has 7.2.3. Can you try that version if possible ?

<facepalm> I sit corrected, decimal point error. My apologies, long
day here.

For the CPU, 400Mbs isn't bad.

CPU: Intel(R) Celeron(R) CPU          420  @ 1.60GHz (1600.01-MHz K8-class CPU)
  Origin = "GenuineIntel"  Id = 0x10661  Family = 6  Model = 16  Stepping = 1
  Features=0xafebfbff<FPU,VME,DE,PSE,TSC,MSR,PAE,MCE,CX8,APIC,SEP,MTRR,PGE,MCA,CMOV,PAT,PSE36,CLFLUSH,DTS,ACPI,MMX,FXSR,SSE,SSE2,SS,TM,PBE>
  Features2=0xe31d<SSE3,DTES64,MON,DS_CPL,TM2,SSSE3,CX16,xTPR,PDCM>
  AMD Features=0x20100800<SYSCALL,NX,LM>
  AMD Features2=0x1<LAHF>
  TSC: P-state invariant

My ~30MB/s from applications is roughly 240Mb/s. 

Will applications such as NFS cut bandwith usage that much?

I'll try the newer driver.


> > So no, I'm not saturating this network. Not even close. I have a
> > machine with a 100Mbs vr0 that can spit out twice that much.
> 
> How could FastE nics do 800Mb/s ?

Same decimal point error. It's clearly time for me go home.

Thanks,
==ml

-- 
Michael W. Lucas 	
http://www.MichaelWLucas.com/, http://blather.MichaelWLucas.com/
Latest book: Network Flow Analysis http://www.networkflowanalysis.com/
mwlucas@BlackHelicopters.org, Twitter @mwlauthor