Linux 1.2.3-TEST (SYSSTAT.TEST) 	1970-01-01 	_x86_64_	(8 CPU)

Device             tps   Blk_read/s   Blk_wrtn/s   Blk_dscd/s   Blk_read   Blk_wrtn   Blk_dscd
sda               8.59       444.28       114.16         0.00    3195498     821088          0
sdb               0.01         0.59         0.00         0.00       4216          0          0


Device             tps   Blk_read/s   Blk_wrtn/s   Blk_dscd/s   Blk_read   Blk_wrtn   Blk_dscd
sda               0.00         0.00         0.00         0.00          0          0          0
sdb               0.00         0.00         0.00         0.00          0          0          0


Device             tps   Blk_read/s   Blk_wrtn/s   Blk_dscd/s   Blk_read   Blk_wrtn   Blk_dscd
sda               6.40         3.20         3.20         0.00        100        100          0
sdb               0.67        45.20         0.00         0.00       1412          0          0