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.
