Commands to monitor AIX server CPU memory utilization and performance

AIX Commands to monitor System Resource Controller (SRC)

Most SRC based services are started from /etc/rc.tcpip 

• Start the xntpd service

                  startsrc -s xntpd

• Stop the NFS related services

                  stopsrc -g nfs

• Refresh the named service

                  refresh -s named

• List all registered services on the system

                  lssrc -a

• Show status of ctrmc subsystem

                   lssrc -l -s ctrmc

AIX Commands to monitor system performance

CPU performance
mpstat
topas -P
lparstat
ps
iostat -tT 1
tprof†
curt† ------   (†Denotes trace based tools.)

Memory performance
vmstat
svmon
ps -o fields
topas
ipcs -m 

Network I/O performance
[ent|tok|fddi|atm]stat
netstat
netpmon†
topas -E 

Also Read: Storage Area Network (SAN) Basic Free Tutorials

Disk I/O performance
iostat
fcstat
lvmstat
filemon†
fileplace
topas -D 

Application performance
truss
probevue
tprof†
svmon -P pid
ps -o fields -p pid
topas

The ~ character toggles to nmon-mode in topas 

Other performances
Check for disk stat history collection
 lsattr -HEl sys0 -a iostat

Enable historical disk statistic collection
 chdev -l sys0 -a iostat=true

Also Read: AIX Scenario based questions

AIX Commands to monitor Memory and Paging space

• List size, summary, and paging activity by paging space

                  lsps -a

• List summary of all paging space

                  lsps -s

• List the total amount of physical RAM in system

                 lsattr -El sys0 -a realmem

• Create a new paging device on rootvg of 64 PPs

                 mkps -a -s 64 -n rootvg

• Extend the existing paging space by 8 PPs

                chps -s 8 hd6