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Performance Management Guide
Performance Tuning Commands
The following tools 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
- 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 starting with AIX 5.2)
- 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 with AIX 5.2)
- schedtune
- Sets parameters for CPU scheduler and Virtual Memory Manager processing.
Beginning in AIX 5.2, this command is a compatibility script that calls schedo
- smitty
- Changes (or displays) system-management parameters
- tuncheck
- Validates a stanza file with tuning parameter values (beginning with
AIX 5.2)
- tundefault
- Resets all tuning parameters to their default values (beginning with
AIX 5.2)
- tunrestore
- Restores all tuning parameter values from a stanza file (beginning with
AIX 5.2)
- tunsave
- Saves all tuning parameter values in a stanza file (beginning with AIX 5.2)
- vmo
- Sets VMM related tuning parameters (along with ioo, replaces vmtune starting with AIX 5.2)
- vmtune
- Changes operational parameters of the Virtual Memory Manager and other
AIX components. Beginning in AIX 5.2, this command is a compatibility
script that calls vmo and ioo
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