On Aug 1, 2010, at 11:31 PM, Corey Smith wrote:

> On Sun, Aug 1, 2010 at 7:30 PM, David Kelly <dke...@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.
> 
> Did you try realtime monitoring your network interface?
> 
> # route -n get <remoteip>
> interface: <yourinterface>
> 
> # 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>
> 
> Another trick to eliminate disk io from the equation is to use nc:
> 
> machine1 <freebsd>:
> # nc -o -l 2000 > /dev/null
> 
> machine2:
> # dd if=/dev/zero bs=1M count=50 | nc machine1 2000

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

--
David Kelly N4HHE, dke...@hiwaay.net
========================================================================
Whom computers would destroy, they must first drive mad.



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