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Lund Performance Solutions


SOS Process File Usage

The Process File Usage Screen

The Process File Usage screen displays information of each file opened by a specific process.


Figure 26.1 SOS Process File Usage screen
To access this 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 F (Process File Usage).
  • At the secondary prompt:
  • Press the Enter key to display the process file usage information for the given process.
  • Or, enter the PID of another process.
  • An example of the screen is shown in Figure 26.1.

    Process File Usage Screen Display Items

    PROCESS FILE USAGE

    The PROCESS FILE USAGE portion of the Process File Usage screen displays process identification information. Each data item is described in the next table.
    Table 26.1 SOS PROCESS FILE USAGE 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.

    OPEN FILES

    The OPEN FILES portion of the Process File Usage screen displays information about each open file. Each data item is described in Table 26.1.
    Table 26.2 SOS OPEN FILES data items
    Data Item
    Description
    Filename
    The name of the open file. The SOS application searches the DNLC for the name of the file. If the name is not in the DNLC, "N/A" will display on the screen.
    Type
    The type of file:
  • Block (a block device file)
  • Char (a character device file)
  • Dir (a directory)
  • Door (a door)
  • FIFO (a FIFO (first in, first out) file)
  • Link (a symbolic link)
  • Proc (a process)
  • Regular (a regular file)
  • Socket (a socket)
  • Access
    The type of access the process has to the open file:
  • R (read only)
  • W (write only)
  • RW (read and write)
  • Offset
    The offset (bytes) into the file.
    Size
    The size of the file (bytes).
    Comp %
    The percentage of offset into the file:
    Comp % = (Offset/Size) x 100
    #Refs
    The current number of references to the open file.

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