IBASE Technology RP-103-SMC User Manual page 90

3. eMMC Test
Note: This operation may damage the data stored in eMMC flash. Before starting the
test, make sure there is no critical data in the eMMC flash being used.
Read, write, and check
•
MOUNT_POINT_STR="/var"
#create data file
dd if=/dev/urandom of=/tmp/data1 bs=1024k count=10
#write data to emmc
dd if=/tmp/data1 of=$MOUNT_POINT_STR/data2
bs=1024k count=10
#read data2, and compare with data1
cmp $MOUNT_POINT_STR/data2 /tmp/data1
eMMC speed test
•
MOUNT_POINT_STR="/var"
#get emmc write speed"
time dd if=/dev/urandom of=$MOUNT_POINT_STR/test
bs=1024k count=10
# clean caches
echo 3 > /proc/sys/vm/drop_caches
#get emmc read speed"
time dd if=$MOUNT_POINT_STR/test of=/dev/null
bs=1024k count=10
82 RP-103-SMC User Manual