Global manipulation of tuning parameters

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Review the following steps to globally manipulate tuning parameters.

The main panel to manipulate all tunable parameters by sets looks similar to the following: 
       Save/Restore All Kernel Tuning Parameters 

  View Last Boot Parameters 
  View Last Boot Log File 

  Save All Current Parameters for Next Boot 
  Save All Current Parameters 
  Restore All Current Parameters from Last Boot Values 
  Restore All Current Parameters from Saved Values 
  Reset All Current Parameters To Default Value 

  Save All Next Boot Parameters 
  Restore All Next Boot Parameters from Last Boot Values 
  Restore All Next Boot Parameters from Saved Values 
  Reset All Next Boot Parameters To Default Value
Each of the options in this panel are explained in the following sections.
View Last Boot Parameters
All last boot parameters are listed stanza by stanza, retrieved from the /etc/tunables/lastboot file.
View Last Boot Parameters
View Last Boot Log File
Displays the content of the file /etc/tunables/lastboot.log.
Save All Current Parameters for Next Boot
     Save All Current Kernel Tuning Parameters for Next Boot

  ARE YOU SURE ?
After selecting yes and pressing ENTER, all the current tuning parameter values are saved in the /etc/tunables/nextboot file. Bosboot will be offered if necessary.
Save All Current Parameters
     Save All Current Kernel Tuning Parameters

  File name                                     [] 
  Description                                   []
Type or select values for the two entry fields:
  • File name: F4 will show the list of existing files. This is the list of all files in the /etc/tunables directory except the files nextboot, lastboot and lastboot.log which all have special purposes. File names entered cannot be any of the above three reserved names.
  • Description: This field will be written in the info stanza of the selected file.
After pressing ENTER, all of the current tuning parameter values will be saved in the selected stanza file of the /etc/tunables directory.
Restore All Current Parameters from Last Boot Values
     Restore All Current Parameters from Last Boot Values

  ARE YOU SURE ?
After selecting yes and pressing ENTER, all the tuning parameters will be set to values from the /etc/tunables/lastboot file. Error messages will be displayed if any parameter of type Bosboot or Reboot would need to be changed, which can only be done when changing reboot values.
Restore All Current Parameters from Saved Values
     Restore Saved Kernel Tuning Parameters

Move cursor to desired item and press Enter.  

  mytunablefile    Description field of mytunable file 
  tun1             Description field of lastweek file
A select menu shows existing files in the /etc/tunables directory, except the files nextboot, lastboot and lastboot.log which all have special purposes. After pressing ENTER, the parameters present in the selected file in the /etc/tunables directory will be set to the value listed if possible. Error messages will be displayed if any parameter of type Bosboot or Reboot would need to be changed, which can't be done on the current values. Error messages will also be displayed for any parameter of type Incremental when the value in the file is smaller than the current value, and for out of range and incompatible values present in the file. All possible changes will be made.
Reset All Current Parameters To Default Value
     Reset All Current Kernel Tuning Parameters To Default Value

  ARE YOU SURE ?
After pressing ENTER, each tunable parameter will be reset to its default value. Parameters of type Bosboot and Reboot, are never changed, but error messages are displayed if they should have been changed to get back to their default values.
Save All Next Boot Parameters
     Save All Next Boot Kernel Tuning Parameters

  File name                                     []
Type or a select values for the entry field. Pressing F4 displays a list of existing files. This is the list of all files in the /etc/tunables directory except the files nextboot, lastboot and lastboot.log which all have special purposes. File names entered cannot be any of those three reserved names. After pressing ENTER, the nextboot file, is copied to the specified /etc/tunables file if it can be successfully tunchecked.
Restore All Next Boot Parameters from Last Boot Values
     Restore All Next Boot Kernel Tuning Parameters from Last Boot Values

  ARE YOU SURE ?
After selecting yes and pressing ENTER, all values from the lastboot file will be copied to the nextboot file. If necessary, the user will be prompted to run bosboot, and warned that for all the changes to be effective, the machine must be rebooted.
Restore All Next Boot Parameters from Saved Values
     Restore All Next Boot Kernel Tuning Parameters from Saved Values

Move cursor to desired item and press Enter.  

  mytunablefile    Description field of mytunablefile file 
  tun1             Description field of tun1 file
A select menu shows existing files in the /etc/tunables directory, except the files nextboot, lastboot and lastboot.log which all have special purposes. After selecting a file and pressing ENTER, all values from the selected file will be copied to the nextboot file, if the file was successfully tunchecked first. If necessary, the user will be prompted to run bosboot, and warned that for all the changes to be effective, rebooting the machine is necessary.
Reset All Next Boot Parameters To Default Value 
     Reset All Next Boot Kernel Tuning Parameters To Default Value
  
ARE YOU SURE ?
After hitting ENTER, the /etc/tunables/nextboot file will be cleared. If necessary bosboot will be proposed and a message indicating that a reboot is needed will be displayed.