I installed a SanDisk 64G, reformatted the partition as ext4. Gio@beaglebone:~$ mount (...) /dev/mmcblk0p1 61241372 53064 61188308 1% /mnt Gio@beaglebone:~$ python Python 2.7.3 (default. Mar 14 2014, 17:55:54) [GCC 4.6.3] on linux2 Type "help", "copyright", "credits" or "License" for more information. >>> 1024*1024*33 34603008 >>> Gio@beaglebone:~$ date Wed Apr 23 21:40:16 UTC 2014 Gio@beaglebone:~$ dd if=/dev/zero of=/mnt/test.file bs=1024 count=34603008 34603008+0 records in 34603008+0 records out 35433480192 Bytes (35 GB) copied, 4940.65 s, 7.2 MB/s Gio@beaglebone:~$ date Wed Apr 23 23:04:58 UTC 2014 Gio@beaglebone:~$ date Wed Apr 23 23:08:02 UTC 2014 Gio@beaglebone:~$ sha1sum /mnt/test.file 6854fc38cb41ed19a43ade369bfba28ae0ec72d8 /mnt/test.file Gio@beaglebone:~$ date Wed Apr 23 23:41:33 UTC 2014
Well, it took a while. 1 hour 19 minutes to create, 30 minutes to read. (I obviously haven't set up NTP yet! Guess I better do that.) On Friday, November 21, 2014 8:17:59 PM UTC-6, liyaoshi wrote: > > This is surprise me > > Can someone do another test like one single file over than 32G ? > > 2014-11-22 6:36 GMT+08:00 Robert Nelson <[email protected] <javascript:> > >: > >> On Fri, Nov 21, 2014 at 4:11 PM, William Hermans <[email protected] >> <javascript:>> wrote: >> > Robert, So am I reading this correctly, and you've got the system to >> boot >> > off an SDXC card ? Well at least mounting the rootfs from it ? >> >> That is correct, it's been running tests all day. I've been trying to >> find a good sdxc implementation manual, as i thought they changed the >> base command set. Unless SanDisk, put their own hardware >> compatibility layer.. >> >> Regards, >> >> >> -- >> Robert Nelson >> http://www.rcn-ee.com/ >> >> -- >> 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] <javascript:>. >> 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.
