How to find disk I/O performance in Linux

Command 10 = 10 seconds interval #iostat 10 Result avg-cpu: %user %nice %system %iowait %steal %idle 0.55 0.00 0.03 0.21 0.00 99.22 Device: tps Blk_read/s Blk_wrtn/s Blk_read Blk_wrtn sda 15.27 0.16 162.70 1787038 1770815888