Just as a reference on my test result I use usb gadget network and run iperf as benchtools
# uname -a Linux buildroot 3.14.33 #10 SMP PREEMPT Sun Feb 15 13:57:32 CST 2015 armv7l GNU/Linux # cat /proc/cpuinfo processor : 0 model name : ARMv7 Processor rev 2 (v7l) BogoMIPS : 996.14 Features : swp half thumb fastmult vfp edsp thumbee neon vfpv3 tls vfpd32 CPU implementer : 0x41 CPU architecture: 7 CPU variant : 0x3 CPU part : 0xc08 CPU revision : 2 Hardware : Generic AM33XX (Flattened Device Tree) Revision : 0000 Serial : 0000000000000000 # # ./iperf -s ------------------------------------------------------------ Server listening on TCP port 5001 TCP window size: 85.3 KByte (default) ------------------------------------------------------------ [ 4] local 10.10.0.2 port 5001 connected with 10.10.0.1 port 43133 [ ID] Interval Transfer Bandwidth [ 4] 0.0-20.3 sec 100 MBytes 41.3 Mbits/sec # ./iperf -c 10.10.0.1 -n 100M ------------------------------------------------------------ Client connecting to 10.10.0.1, TCP port 5001 TCP window size: 43.8 KByte (default) ------------------------------------------------------------ [ 3] local 10.10.0.2 port 50819 connected with 10.10.0.1 port 5001 [ ID] Interval Transfer Bandwidth [ 3] 0.0- 7.0 sec 100 MBytes 120 Mbits/sec 2015-02-15 13:02 GMT+08:00 William Hermans <[email protected]>: > Just to let you all, and anyone else know my own findings . . . I setup a > rootfs to load from an external USB hard drive( last year-ish ). I found > that writes were as high as 20MB/s, but reads were around like the both of > you seem to say. 10MB/s. So my own numbers seem to jibe with both of yours > as well. At least for reads. > > Also as far as I know there was no DMA involved, *and* I could not say for > sure which block size I used . . . maybe I posted that in an old post, but > I do not remember. The methodology I used for testing was dd( /dev/zero to > disk ) and time, together. So nothing fancy. > > On Sat, Feb 14, 2015 at 5:05 PM, Chris Morgan <[email protected]> wrote: > >> I can also confirm ~10MB/sec transfer rates with some testing I've >> done. This was some time ago, maybe 6 months, and with Angstrom. >> >> Chris >> >> >> On Sat, Feb 14, 2015 at 6:44 PM, Jeffrey Wilson <[email protected]> >> wrote: >> > I am having transfer rate issues as well. My post over on BeagleBone >> group >> > has gotten zero attention. >> > https://groups.google.com/forum/#!topic/beaglebone/KxYwZewmRLY >> > In my case, the BBB cannot handle the video throughput of my camera, >> > meanwhile a Rpi can. >> > Jeff >> > >> > >> > On Monday, December 29, 2014 at 1:31:28 PM UTC-5, [email protected] >> > wrote: >> >> >> >> Untill now, the maximum transfer rate I could achieve is ~11 MB/s. I've >> >> tried this with different kernels with and without DMA enabled. >> >> >> >> Could anyone get more than this? If so, how can I achieve that? >> >> >> >> Thank you! >> >> >> >> TC >> > >> > -- >> > 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]. >> > 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]. >> 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]. > 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]. For more options, visit https://groups.google.com/d/optout.
