[mythtv-users] Noobish network cable connection question, basement > upstairs

[Travis Tabbal]

On Fri, Dec 5, 2008 at 9:10 AM, Ian Clark <mrrooster at gmail.com> wrote:

> How much faster do you find it? I used to get about 7M/sec or so on
> 100Mbit, and on gig I get about 10-12 at the most. I don't think I've
> got anything badly wrong. Maybe I was just expecting a bigger speed
> boost with gig.
>


On the Mac Mini, the activity monitor app shows about 46Mbyte/sec reading
from the array. This is with a file copy to the local HD. Writing to the
array is close to the same speed.

I did find when I first upgraded to gigabit that the old fileserver
(K6-2/550) couldn't handle it. The CPU would max out when I would start a
transfer. I upgraded to an Athlon 64 based chip and it's been going great
since then.

This is without jumbo frames. I find the performance acceptable.

Just for fun, I looked up a Linux util to do performance testing. Here's the
result between 2 linux boxes over gigabit. Note that this connection runs
through 2 switches and jumbo frames is disabled.

-------------------------
travis at mythtv:~$ iperf -c 10.1.0.2
------------------------------------------------------------
Client connecting to 10.1.0.2, TCP port 5001
TCP window size: 16.0 KByte (default)
------------------------------------------------------------
[  3] local 10.1.0.30 port 39299 connected with 10.1.0.2 port 5001
[  3]  0.0-10.0 sec  1.08 GBytes    930 Mbits/sec
-------------------------

930 Mbits/sec. Sounds like the network is working OK to me. :)
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