OT - Small DNS "appliances" for remote offices.

[seitz at bsd-unix.net (Bryan Seitz)]

On Thu, Feb 19, 2015 at 06:18:43AM -0500, Rob Seastrom wrote:
> 
> Bryan Seitz <seitz at bsd-unix.net> writes:
> 
> > odroid-c1 + eMMC module + RTC battery + case + power adapter.
> > Should run you about $75 *AND* wouldn't be bad for running NTP as
> > well.
> 
> I haven't looked into the details of the clock, so "wouldn't be bad"
> is probably true, "notably good", well, that would be a task for
> someone with experience doing clock benchmarking and who can describe
> MAVAR without looking it up.
> 
> > The gig-e port on the C1 has been observed to push 405Mbps TX and
> > 940Mbps+ RX via iperf.
> 
> The 405 Mbps for TX.  I've seen around 30 Mbyte/sec on single stream
> TCP RX.  Got 99.5 Mbyte/sec from a Mac Mini in the same subnet so
> that's not a limit of the host on the other end of the benchmark.
> 
> I call shenanigans on the 940 Mbps iperf number though.  The HSIC bus
> is only 480 Mbit/sec.  Two pints of beer in a one pint glass would be
> some trick.

http://dn.odroid.com/homebackup/201411241452444193.jpg

I don't think it lives on the 480Mbit/sec limited bus here.

[  3] local 192.168.1.4 port 53391 connected with 192.168.1.21 port 5001
[ ID] Interval       Transfer     Bandwidth
[  3]  0.0-10.0 sec   488 MBytes   409 Mbits/sec

[  4] local 192.168.1.4 port 5001 connected with 192.168.1.21 port 34581
[ ID] Interval       Transfer     Bandwidth
[  4]  0.0-10.0 sec  1.09 GBytes   939 Mbits/sec

-- 
             
Bryan G. Seitz