Message queues on HP-UX

Suggested settings for HP-UX

Start of change

HP-UX 11i V3

msgmbs 8 Total Message Space for Sys V IPC Message Queues (MB)
msgmnb 65535 Maximum size of a message queue (bytes) 
Set these values by using the SMH utility:
  1. Type smh at the command prompt.
  2. Select Kernel Configuration, Tunables.

    This displays a list of kernel parameters that you can change.

  3. Select a parameter, either by clicking on it with the mouse or by moving the cursor to it and pressing the enter key.
  4. Select Actions,Modify configurable parameter.
  5. Enter the new value for the parameter in the Formula/Value field, and then select OK.

    If the value you entered is not valid, SMH displays a window explaining the error.

  6. When you have made all of the required changes, select Actions, Process New Kernel.

    SMH displays a window asking for confirmation; select Yes.

SMH then compiles the kernel and displays a window asking if you want to replace the old kernel before restarting the system. You must restart the system for the changes to take effect.

End of change

HP-UX 11i V2

msgssz  32     Message Segment Size
msgmnb  65535  Max Number of Bytes on Message Queue
msgmax  65535  Message Max Size (bytes)
msgseg  16384  Number of Segments Available for Messages
Set these values by using the SAM utility:
  1. Type sam at the command prompt.
  2. Select Kernel Configuration, Configurable Parameters.

    This displays a list of kernel parameters that you can change.

  3. Select a parameter, either by clicking on it with the mouse or by moving the cursor to it and pressing the enter key.
  4. Select Actions,Modify configurable parameter.
  5. Enter the new value for the parameter in the Formula/Value field, and then select OK.

    If the value you entered is not valid, SAM displays a window explaining the error.

  6. When you have made all of the required changes, select Actions, Process New Kernel.

    SAM displays a window asking for confirmation; select Yes.

SAM then compiles the kernel and displays a window asking if you want to replace the old kernel before restarting the system. You must restart the system for the changes to take effect.


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Timestamp icon Last updated: Tuesday, 19 November 2013


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