Those numbers include all the overhead. We divide the
amount of data transferred by a straight measurement
of the time taken for the transfer.
Tim Stoutamore
www.blunkmicro.com
----- Original Message -----
From: "Paul Breed" <pbreed netburner.com>
To: <stoutblunkmicro.com>
Sent: Tuesday, April 04, 2006 9:49 AM
Subject: Re: [ColdFire] MCF5485 Ethernet Speed
> Do these numbers include the tcp and ethernet packet
overhead, or is
> it only the
> TCP payload portion....
>
> Paul
>
>
>
> At 02:11 AM 4/4/2006, you wrote:
> >We use a network benchmark test that transfers
10,000,000
> >bytes of data over TCP between a target board and a
PC that
> >are connected via a 100 Mbps switch. The target
board runs
> >first a chargen client and then a discard client,
communicating
> >with Windows XP servers on the PC.
> >
> >We measure the throughput and percent CPU
utilization. I
> >have the following results for our
TargetOS/TargetTCP on
> >the m5282lite and m5474lite, the compiler is gcc:
> >
> >chargen server
> >MCF5282 21.1 Mbps at 100.0% utilization
> >MCF5474 74.8 Mbps at 96.7% utilization
> >
> >discard client
> >MCF5282 27.0 Mbps at 96.3% utilization
> >MCF5474 81.6 Mbps at 84.0% utilization
> >
> >The MCF5282 is running at 64 MHz with the
instruction
> >cache and buffered writes enabled. The MCF5474 is
> >running at 132 MHz with the instruction cache
enabled
> >and the data cache enabled in write-through mode.
> >
> >Tim Stoutamore
> >www.blunkmicro.com
> >
> >----- Original Message -----
> >From: "Wolfgang Elsner"
<wolfgang.elsnersentec-elektronik.de>
> >To: <stoutblunkmicro.com>
> >Sent: Thursday, March 30, 2006 2:26 AM
> >Subject: [ColdFire] MCF5485 Ethernet Speed
> >
> >
> > > Hi,
> > >
> > > I have problem with ethernet speed on MCF548x
processor.
> > > My ethernet connection works, but is too
slow. I have made
> > > some tests (with linux kernel 2.6.12 and with
dBUG, TCP
> > > connection) and the max. speed was 3,9 Mbps.
That is strange,
> > > because FEC controler can give speed up to
100Mbps. I have
> > > probed to change 10/100 speed on the host PC
ethernet card,
> > > but the speed for transfers remains the same.
Has somebody
> > > the same problem? Can I reach better speed or
that is the max.,
> > > what that processor can do?
> > >
> > > Regards
> > > Wolfgang
> > >
> > > --
> > > Dipl.-Ing. Wolfgang Elsner
Entwicklung Hard- und
Software
> >
>
------------------------------------------------------------
-----------
> > > EMail: wolfgang.elsnersentec-elektronik.de |
senTec Elektronik
GmbH
> > > Tel: +49(0)3677/4624864 |
Werner-von-Siemens-Str.
6
> > > Fax: +49(0)3677/4624866 |
98693
Ilmenau
> > > http://www.sentec-ele
ktronik.de |
> > >
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