AIX Advanced O Commands for Performance Tuning

8 AIX commands for setting the ~540 Performance Tuning options. They all end with a "o" letters - hence the name. They are a consistent set of commands to tune 100’s AIX performance options with the same common - command syntax - outputting format - technical terms The commands are: asoo for tuning Active System Optimiser ioo for tuning I/O nfso for tuning Network File System no for Network optimisation raso for tuning RAS* features schedo for tuning the CPU Scheduler vmo for adjusting the Virtual Memory Manager * Reliability, Availability, Serviceability Eighth command is lvmo - does not have the full syntax but very similar. Example syntax $ no -h Usage: no -h [tunable] | {[-F] -L [tunable]} no [-p|-r] [-y] (-D | ({-d tunable} {-o tunable=value})) -h Display help about the command and its arguments -h tunable Display help about a tunable -L [tunable] List info about one or all tunables in a table -x [tunable] List info about one or all tunables in CSV -a Display value for all tunables, one per line -F Force display of restricted tunables -a/-L/-x -o tunable Display current value of a tunable -o tunable=value Set tunable to value -D Reset all tunables to their default values -d tunable Reset tunable to its default value -r Make change(s) (-D/-d/-o) to nextboot value -p Make change(s) (-D/-d/-o) permanent (current + nextboot) -y Suppress prompt before executing bosboot Note: I have retired from IBM but I am still interesting is supporting and helping nmon and njmon users. Plus questions on AIX and Power10. Please use [email protected] from now on.