On Thu, May 29, 2014 at 10:47 PM, Michael Howard mike@dewberryfields.co.uk wrote:
Hi All,
Not specifically Netbook, just a general question for opinions;
What is the bottleneck on arm devices when it comes to network speed?
I have a number of devices and they are all woefully slow. In order of poorness :) a few Dreamplugs (1/10th the speed of desktop) , a Cubietruck (1/5th the speed of desktop), a mirabox (haven't actuially timed it) et al.
Obviously there are many factors that can afect timings (depending on the test) but even using 3rd party Gigabit USB Nics the results do not improve. I've used netcat and scp (ouch) to name two methods, what would be a good leveller to eliminate outside factors?
scp is not a good test as it has to do crypto as well. netcat or ttcp or similar should be ok. Last time I did some tests the iMX6 could do 400Mb (see this article http://boundarydevices.com/i-mx6-ethernet/ ) which was the fastest device I had. I have a few new ones to try but not that optimistic. These low end boards are not designed for fast IO (other than display refresh perhaps). USB2 will probably be slower than directly connected ethernet, USB3 might be better (have one of those to test too).
Justin