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|
#!/system/bin/sh
ITERATION="$1"
PARTITION="$2"
OUTPUT="$3"
if [ "$#" -ne 3 ]; then
echo "ERROR: Usage: $0 ITERATION PARTITION OUTPUT"
exit 1
fi
[ -d "${OUTPUT}" ] && mv "${OUTPUT}" "${OUTPUT}-$(date +%Y%m%d%H%M%S)"
mkdir -p "${OUTPUT}" && cd "${OUTPUT}"
# If partition specified, format it to vfat, and mount it to /mnt/dd_test.
# Then enter the mount point to do dd test.
if [ -n "${PARTITION}" ]; then
partition_name="$(basename "${PARTITION}")"
partition_numbers="$(grep "${partition_name}" /proc/partitions \
| awk '{print $1","$2}')"
if [ -z "${partition_numbers}" ]; then
echo "ERROR: ${PARTITION} NOT found" && exit 1
else
# Attemp to umount it in case it is mounted by Android vold.
umount "/dev/block/vold/public:${partition_numbers}" > /dev/null 2>&1
umount "${PARTITION}" > /dev/null 2>&1
echo "INFO: formatting ${PARTITION} to vfat..."
busybox mkfs.vfat "${PARTITION}"
sync && sleep 10
mkdir -p /mnt/dd_test
mount -t vfat "/dev/block/vold/public:${partition_numbers}" \
/mnt/dd_test/
if [ $? -eq 0 ]; then
echo "INFO: Mounted ${PARTITION} to /mnt/dd_test"
else
echo "ERROR: failed to mount ${PARTITION}" && exit 1
fi
cd /mnt/dd_test
echo "INFO: dd test directory: $(pwd)"
fi
fi
# Run dd write/read test.
for i in $(seq "${ITERATION}"); do
echo
echo "INFO: Running dd write test [$i/${ITERATION}]"
echo 3 > /proc/sys/vm/drop_caches
busybox dd if=/dev/zero of=dd.img bs=1048576 count=1024 conv=fsync 2>&1 \
| tee -a "${OUTPUT}"/dd-write-output.txt
echo
echo "INFO: Running dd read test [$i/${ITERATION}]"
echo 3 > /proc/sys/vm/drop_caches
busybox dd if=dd.img of=/dev/null bs=1048576 count=1024 2>&1 \
| tee -a "${OUTPUT}"/dd-read-output.txt
rm dd.img
done
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