Performance tuning commands

AIX supports several commands that allow you to change one or more performance-related aspects of the system.

Command
Function
bindprocessor
Binds or unbinds the kernel threads of a process to a processor
caccelstat
Reports statistics that are related to coherent accelerators for the entire system, or for each accelerator and process.
chdev
Changes the characteristics of a device
chlv
Changes only the characteristics of a logical volume
chps
Changes attributes of a paging space
fdpr
A performance tuning utility for improving execution time and real memory utilization of user-level application programs
ifconfig
Configures or displays network interface parameters for a network using TCP/IP
ioo
Sets I/O related tuning parameters (along with vmo, replaces vmtune command.
migratepv
Moves allocated physical partitions from one physical volume to one or more other physical volumes
mkps
Adds an additional paging space to the system
nfso
Configures Network File System (NFS) network variables
nice
Runs a command at a lower or higher priority
no
Configures network attributes
renice
Alters the nice value of running processes
reorgvg
Reorganizes the physical partition allocation for a volume group
rmss
Simulates a system with various sizes of memory for performance testing of applications
schedo
Sets tuning parameters for CPU scheduler (replaces schedtune starting command.
smitty
Changes (or displays) system-management parameters
tuncheck
Validates a stanza file with tuning parameter values.
tundefault
Resets all tuning parameters to their default values.
tunrestore
Restores all tuning parameter values from a stanza file.
tunsave
Saves all tuning parameter values in a stanza file.
vmo
Sets VMM related tuning parameters (along with ioo, replaces vmtune command.