A performance of microSDHC TOSHIBA EXCERIA Tyep HD 16GB on BeagleBone Black

[root@alarm ~]#  dd if=/dev/zero of=/swapfile.img bs=1M count=512
512+0 records in
512+0 records out
536870912 bytes (537 MB) copied, 56.8808 s, 9.4 MB/s

[root@alarm ~]#  dd if=/dev/zero of=/swapfile.img bs=1M count=512
512+0 records in
512+0 records out

536870912 bytes (537 MB) copied, 39.5575 s, 13.6 MB/s


Peace!!