
Chapter 9. Performance considerations for UNIX servers 353
9.3 AIX performance monitoring tools
In this section, we briefly review the various AIX commands and utilities that are useful for
performance monitoring.
9.3.1 AIX vmstat
The vmstat utility is a useful tool for taking a quick snapshot of the system performance. It is
the first step toward understanding the performance issue and specifically in determining
whether the system is I/O bound.
Example 9-5 shows how vmstat can help you monitor filesystem activity by using the
command vmstat -I.
Example 9-5 The vmstat -I utility output for filesystem activity analysis
[root@p520-tic-3]# vmstat -I ...