Linux CPU Usage

ps -eo pcpu,pid,user,args | sort -k 1 -r | head -10

ps -eo pcpu,pid,user,args | sort -r -k1 | less

Linux Memory Usage

ps -eo rss,vsz,pid,cputime,cmd --width 100 --sort rss,vsz | tail --lines 10

ps aux --sort -rss | head

ps axo %mem,pid,euser,cmd | sort -nr | head -n 10

ps aux | sort -nk +4 | tail

ps -e -orss=,args= | sort -b -k1,1n | pr -TW$COLUMNS

HPUX Kernel Configuration

1) Go to /stand/build

2) system_prep -v -s system

The system_prep script creates the system file /stand/build/system in your current directory.

3) Edit the /stand/build/system file to perform your task.

4) mk_kernel -s system : Build the kernel.

The mk_kernel command creates /stand/build/vmunix_test, a kernel ready for testing.

If you get this message when executing mk_kernel,
ERROR: Kernel is too large to boot.
Actual: 15605892 bytes
Limit: 13580288 bytes

eliminate optional subsystems or drivers and decrease the tunable parameters.

Move the old system file and kernel so if anything goes wrong, you still have a bootable kernel.

mv /stand/system /stand/system.prev
mv /stand/vmunix /stand/vmunix.prev

5) Move the new system file and new kernel into place, ready to be used when you reboot the system.

mv /stand/build/system /stand/system
mv /stand/build/vmunix_test /stand/vmunix

6) Reboot the server.