TOCPREVNEXTINDEX

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 30.1 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 30.1.

    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 30.1 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.

    REGION TYPES

    The REGION TYPES portion of the Process Memory Regions screen displays summary information for each type of memory region. Each data item is described in the following table.
    Table 30.2 SOS REGION TYPES data items
    Data Item
    Description
    Data
    The total KB of RAM/virtual memory used by data regions for the process.
    Text
    The total KB of RAM/virtual memory used by text regions for the process.
    Stack
    The total KB of RAM/virtual memory used by stack regions for the process.
    Shm
    The total KB of RAM/virtual memory used by shared memory regions for the process (does not account for the other number of process sharing this region).
    The sum of this number for all processes could exceed the amount of RAM on a system, because it does not account for sharing.
    MMap
    The total KB of RAM/virtual memory used by memory map regions for the process.
    IO
    The total KB of RAM/virtual memory used by other memory regions for the process.
    Other
    The total KB of RAM/virtual memory used by any other regions for the process.
    Total
    The total KB of RAM/virtual memory used by all regions for the process.

    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 30.3 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 command to look up the file name.
  • Type
    The type of memory region:
  • NULLDR - null dereference region
  • TEXT - text region
  • DATA - data region
  • STACK - stack region
  • SHM - shared memory region
  • MMAP - memory mapped region
  • UAREA - user area (uarea) region
  • 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.

    Lund Performance Solutions
    www.lund.com
    Voice: (541) 812-7600
    Fax: (541) 81207611
    info@lund.com
    TOCPREVNEXTINDEX