Aix Disk I/O monitoring and tuning tools

Tool	Function
filemon	Monitors the performance of the file system, and reports the I/O activity on behalf of logical files, virtual memory segments, logical volumes, and physical volumes
fileplace	Displays the placement of file blocks within logical or physical volumes
lvmstat	Reports input/output statistics for logical partitions, logical volumes and volume groups. Also reports pbuf and blocked I/O statistics and allows pbuf allocation changes to volume groups
iostat	Reports Central Processing Unit (CPU) statistics, asynchronous input/output (AIO) and input/output statistics for the entire system, adapters, TTY devices, disks CD-ROMs, tapes and file systems
wlmstat	Shows Workload Manager (WLM) per class resource utilization statistics
wlmmon	The wlmmon and wlmperf commands provide graphical views of Workload Manager (WLM) resource activities by class
ioo	Manages Input/Output tunable parameters