This screen displays the utilization of each page in a global
    buffer. Because there can be many times more buffers and pages
    than displayable geography, this screen contains multiple pages.
    Use the left angle bracket (<) key to go to the previous page
    and the right angle bracket (>) key to go to the next page of the
    screen.

    This screen is organized in units of buffers. Each "|" delineates
    a buffer. Each character between "|"s represents a single page.
    A buffer can contain fewer than the maximum number of pages,
    depending on the various storage area page sizes. Inadmissible
    pages are marked using underscore ("_") and can be ignored.

    The number of users sharing a particular page is known as the
    share-count. This screen is based on a display-threshold that
    is compared against the number of users sharing a particular
    page. Initially, the display threshold value is 1. The display
    threshold can be configured, as described below.

    Page share-counts are identified as follows:

    o  Space (" ")- A page with a share-count less than the display-
       threshold

    o  Dot (".")- A page with a share-count identical to the display-
       threshold

    o  Digit from 2 through 9- A page with share-count that exceeds
       the display-threshold but is less than ten, identified by the
       respective digit

    o  Asterisk ("*")- A page with share-count that exceeds the
       display-threshold by 10 or more

    A row of "X"s delineates the end of the global buffer pool. All
    blank lines following the row of "X"s can be ignored.

    As a general measure of global buffer pool utilization when using
    the default display-threshold, a display containing a lot of
    blanks is not good; this probably indicates that the global
    buffer pool is sized too large for the current number of users
    accessing the database. A display containing a lot of dots (".")
    is not good since this indicates non-sharing of pages; this
    probably indicates that local buffers might be a better choice.
    A display containing a lot of numeric digits is good, since
    this indicates good page sharing. A display containing a lot
    of asterisks ("*") is very good, since this indicates tremendous
    page sharing.

    You can use the "Config" menu option to filter the "GB
    Utilization" display. Select this option, by typing the letter
    C, to display the configuration submenu.

    The configuration submenu contains a single option: "Filter
    Utilization Display". Selecting this option will display the
    prompt "Enter global buffer threshold (1+) [current=1]: ". The
    threshold indicates the number of users sharing a page to be
    displayed; for instance, if you entered "5" then only those pages
    being accessed by 5 or more users will be displayed. Also, those
    pages shared by exactly 5 users would be identified using a dot
    (".") and those more than 5 would be identified using the digits
    6 through 9 or the asterisk ("*") if more than nine users are
    sharing a page.

    This screen is not saved in the binary output file and cannot be
    selected during binary file replay.