wrote 4194304/4194304 bytes at offset 0
4 MiB, 1024 ops; 0.0030 sec (1.299 GiB/sec and 340425.5319 ops/sec)
wrote 4194304/4194304 bytes at offset 0
4 MiB, 1024 ops; 0.0030 sec (1.299 GiB/sec and 340652.0293 ops/sec)
wrote 4194304/4194304 bytes at offset 0
4 MiB, 1024 ops; 0.0029 sec (1.310 GiB/sec and 343278.5786 ops/sec)
wrote 4194304/4194304 bytes at offset 0
4 MiB, 1024 ops; 0.0030 sec (1.282 GiB/sec and 336068.2639 ops/sec)
wrote 4194304/4194304 bytes at offset 0
4 MiB, 1024 ops; 0.0028 sec (1.361 GiB/sec and 356794.4251 ops/sec)
umount: /dev/sdb: not mounted.