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From: David Kelly <dkelly@hiwaay.net>
Date: Mon, 2 Aug 2010 07:44:20 -0500
To: Corey Smith <corsmith@gmail.com>
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Cc: freebsd-questions@freebsd.org, "Jason C. Wells" <jcw@speakeasy.net>
Subject: Re: Typical Network Performance
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On Aug 1, 2010, at 11:31 PM, Corey Smith wrote:

> On Sun, Aug 1, 2010 at 7:30 PM, David Kelly <dkelly@hiwaay.net> wrote:
>> Gigabit ethernet from a 2.8 GHz P4 to or from MacPro I am only =
limited by disk data rate. About 60 MB/sec on one end of the disk, more =
on the other end of the disk.
>=20
> Did you try realtime monitoring your network interface?
>=20
> # route -n get <remoteip>
> interface: <yourinterface>
>=20
> # netstat -I <yourinterface> -w 1

No. I saw numbers that I was reasonably happy with and didn't pursue =
further.

> Do you see errors on the interface?

Nope. 60 MB/sec via FTP is about 60% of gigabit and was faster than some =
disk accesses.

> # netstat -I <yourinterface>
>=20
> Another trick to eliminate disk io from the equation is to use nc:
>=20
> machine1 <freebsd>:
> # nc -o -l 2000 > /dev/null
>=20
> machine2:
> # dd if=3D/dev/zero bs=3D1M count=3D50 | nc machine1 2000

60 MB/sec was the average over gigabytes of data. Real data. Real =
network wire.

--
David Kelly N4HHE, dkelly@HiWAAY.net
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=
=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D=3D
Whom computers would destroy, they must first drive mad.