SSD 128G的NVME 品牌为忆联
板子firefly的rk3399pro
root@firefly:/nvmedir#
root@firefly:/nvmedir# dd if=/dev/zero of=./test bs=200MB count=10
10+0 records in
10+0 records out
2000000000 bytes (2.0 GB, 1.9 GiB) copied, 5.5693 s, 359 MB/s
root@firefly:/nvmedir#
root@firefly:/nvmedir#
root@firefly:/nvmedir# dd if=./test of=/dev/zero bs=200MB count=9
9+0 records in
9+0 records out
1800000000 bytes (1.8 GB, 1.7 GiB) copied, 4.36823 s, 412 MB/s
root@firefly:/nvmedir#
root@firefly:/nvmedir#
root@firefly:/nvmedir# df -lh
Filesystem Size Used Avail Use% Mounted on
/dev/root 15G 2.7G 12G 20% /
devtmpfs 978M 0 978M 0% /dev
tmpfs 979M 0 979M 0% /dev/shm
tmpfs 979M 17M 962M 2% /run
tmpfs 5.0M 4.0K 5.0M 1% /run/lock
tmpfs 979M 0 979M 0% /sys/fs/cgroup
tmpfs 196M 0 196M 0% /run/user/0
tmpfs 196M 16K 196M 1% /run/user/1000
/dev/nvme0n1p1 117G 2.0G 109G 2% /nvmedir
root@firefly:/nvmedir#
总结
连续读1.8GB的数据,速度为412MB/s
连续写2GB的数据,速度为359MB/s
发烫,加散热片后
root@firefly:/nvmedir# dd if=/dev/zero of=./test bs=200MB count=10
10+0 records in
10+0 records out
2000000000 bytes (2.0 GB, 1.9 GiB) copied, 5.81236 s, 344 MB/s
root@firefly:/nvmedir# dd if=./test of=/dev/zero bs=200MB count=9
9+0 records in
9+0 records out
1800000000 bytes (1.8 GB, 1.7 GiB) copied, 4.3277 s, 416 MB/s
读416MB/s 写344MB/s
加散热片后连续写6GB数据
6000000000 bytes (6.0 GB, 5.6 GiB) copied, 32.669 s, 184 MB/s