AIX

Hi All,

In the rootvg there are two pvs (each 146 gigs). The problem is with performance here. I have noticed IO over those two disks remains 100% maximum time. There are enough memory available and paging is 0. I need to identify the componants which is/are responsible for the high IO on those two disks (hdisk0 & hdisk1).

Can you suggest some command to get rid of this please ?

Regards.

nmon, iostat, lvmstat

Assuming your rootvg disks are hdisk0 and hdisk1, run the command below and watch the different fields to see which one is doing the most work. This is a real-time monitor.

Code:

iostat hdisk0 hdisk1 1

If you want to see individual paths for each of your disks, add the "-m":

Code:

iostat -m hdisk0 hdisk1 1