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Lund Performance Solutions


SOS Process Memory Regions

The Process Memory Regions Screen

The Process Memory Regions screen displays information about the memory regions accessed by a specific process.


Figure 27.1 SOS Process Memory Regions screen
To access the Process Memory Regions screen from any SOS display screen:
  • Type s from the SOS Enter command: prompt to view the Screen Selection Menu screen.
  • From the Screen Selection Menu screen, enter M (Process Memory Regions).
  • At the secondary prompt:
  • Press the Enter key to display the process memory regions information for the given process.
  • Or, enter the PID of another process.
  • The Process Memory Regions screen will display. An example of the screen is shown in Figure 27.1.

    Process Memory Regions Screen Display Items

    PROCESS MEMORY REGIONS

    The PROCESS MEMORY REGIONS portion of the Process Memory Regions screen contains identification information about the selected process. Each data item is described in the following table.
    Table 27.1 SOS PROCESS MEMORY REGIONS data items
    Data Item
    Description
    PID
    The product identification number of the process.
    Name
    The name of the process—the command used to create the process.
    User Name
    The name of the user that owns the process.
    Tty
    The device file associated with the terminal to which the process is attached. If no terminal is associated with the process, three dashes (---) will display.

    MEMORY REGIONS

    The MEMORY REGIONS portion of the Process Memory Regions screen contains information pertaining to each memory region used by the specified process. Each data item is described in the following table.
    Table 27.2 SOS MEMORY REGIONS data items
    Data Item
    Description
    Front Store File
    The file path that corresponds to the memory region. This is the program name for data and text regions and the library name for shared libraries. If a file name is not associated with the region, the type of region will be displayed. If the file name is not obtainable, the device and inode will be displayed. This information can be used with the ncheck (IM) command to look up the file name.
    Type
    The type of memory region:
  • HEAP (the region is a heap)
  • STACK (the region is a stack)
  • ANON (the region is anonymous; not associated with a file)
  • MMAP (the region is mapped in memory)
  • RSS
    The size of region in RAM (KB).
    VSS
    The size of region in virtual memory (KB).
    Virtual Address
    The virtual address of memory region in hex format. This number represents the address of the space and space offset of the region.

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