LINUX [oracle@perass back]$ iostat -m 1 10 Linux 2.6.18-194.el5 (perass) 03/01/2014 avg-cpu: %user %nice %system %iowait %steal %idle 0.04 0.00 1.21 38.28 0.00 60.47 Device: tps MB_read/s MB_wrtn/s MB_read MB_wrtn sda 174.00 0.06 34.43 0 34 sda1 0.00 0.00 0.00 0 0 sda2 0.00 0.00 0.00 0 0 sda3 174.00 0.06 34.43 0 34 -m Display statistics in megabytes per second instead of blocks or kilobytes per second. Data dis- played are valid only with kernels 2.4 and newer 可以看到写入的速度为34M/s AIX $ iostat 1 10 System configuration: lcpu=4 drives=6 paths=14 vdisks=0 tty: tin tout avg-cpu: % user % sys % idle % iowait 0.0 59.0 1.1 0.5 98.3 0.0 Disks: % tm_act Kbps tps Kb_read Kb_wrtn hdisk1 0.0 0.0 0.0 0 0 hdisk0 0.0 0.0 0.0 0 0 Kb_read The total number of KBs read. Kb_wrtn The total number of KBs written.