I am just reporting what "speedtest-cli" says. I note that watching "htop" at the same time, on the USB-2 to Ethernet tests, the CPU is maxing out at 100 percent, so the speed is not necessarily constrained by the network interface, but the CPU's ability to feed it, through the USB stack.
I don't know how speedtest-cli works. If it runs a random number continuously, then we might be testing the speed of the random number generator, rather than the network. If it builds a large data table in advance and just streams the table, then it is probably representative of the fastest the system can run. A long winded way of agreeing with you. But, there is no doubt in my mind that the USB-2 to Ethernet interface is about an order of magnitude faster than the SPI to Ethernet interface. One conclusion is that putting a 1Gb Ethernet interface on a PocketBeagle is a waste of money and power. A 10/100 Mb USB-2 to Ethernet interface would be cheaper, just as fast for throughput, and about one fourth the power. --- Graham == On Sat, Oct 14, 2017 at 11:06 AM, William Hermans <[email protected]> wrote: > > > On Fri, Oct 13, 2017 at 8:39 AM, Graham <[email protected]> wrote: > >> I hacked a "quick and dirty" second USB port as described. >> Then connected a LAN7500 USB-2 to Gb-Ethernet board. >> Came right up, drivers are already in the kernel, no device tree changes. >> Connected to the network at 1 Gb. >> >> speedtest-cli results (on a 1 Gb up/down network) >> Download 27 Mbps, Upload 41 Mbps. >> >> And it has a legitimate MAC address. :-) >> >> (for comparison, BBB Rev.C is download 60 Mbps, upload 70 Mbps, which >> is about all I would expect out of a 100 Mbps connection.) >> >> >> So, I'm not going ot argue about this, and I'm only going to say this > once. > > I've real world tested ethernet on several A5A's, several C's, and a > boatload of green's. Down speeds 11.6MB/s( that's megabyte ), up speed > 11.4-11.5MB/s. > > Real world test was a NFS share, reading / writing 1GB of data, or more. > > Additionally, I've benchmarked USB networking, Down speeds 105 Mbit/s, and > uploads were a bit shy at around 85Mbit/s. > > You may want to check to make sure your speed test is accurate. > > -- > For more options, visit http://beagleboard.org/discuss > --- > You received this message because you are subscribed to a topic in the > Google Groups "BeagleBoard" group. > To unsubscribe from this topic, visit https://groups.google.com/d/ > topic/beagleboard/GOwSuY4oiyI/unsubscribe. > To unsubscribe from this group and all its topics, send an email to > [email protected]. > To view this discussion on the web visit https://groups.google.com/d/ > msgid/beagleboard/CALHSORpcn1uNWJqCLodmUUXuYYPXJKaypKHF83JN7Sz2O%3DdHog% > 40mail.gmail.com > <https://groups.google.com/d/msgid/beagleboard/CALHSORpcn1uNWJqCLodmUUXuYYPXJKaypKHF83JN7Sz2O%3DdHog%40mail.gmail.com?utm_medium=email&utm_source=footer> > . > > For more options, visit https://groups.google.com/d/optout. > -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CANN_KV781zChZOdy-mp_cKBmFtSE3A5q-Y4C6Ux892A2JBK3xA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
