RMUDISPLAY72.HLB  —  Overview  Screens  Row Cache Queue Length screen
    This screen helps you determine the relative CPU performance
    impact of row caching. Poor CPU performance can result if many
    hash table collisions occur.

    This screen displays the following fields:

    o  Cache ID- the row cache identifier

    o  #Rows- the total number of rows in the row cache

    o  Table Size- the total number of hash table entries for the row
       cache

    Each character position of the screen identifies a specific hash
    table entry. The character, if any, identifies the length of that
    entry's queue. The asterisk (*) denotes a queue length of 10 or
    more.

    The line of "X"s indicates the end of the display. All blank
    lines following the row of "X"s can be ignored.

    Ideally, every space of the screen should be non-zero. A display
    containing many long queues and a lot of blanks indicates poor
    CPU utilization.

    You can use the Config menu option to filter the Row Cache
    Queue Length screen. 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 row cache
    threshold (0+) [current=1]: ". Any queue length which is less
    than the specified utilization threshold will not be displayed.
    By default, the utilization threshold is 0, so that all entries
    on the screen are displayed, even those of length 0.

    The number of rows in the row cache affects the size of the
    corresponding hash table. Hash table queue lengths can be
    controlled by increasing or decreasing the number of row cache
    entries.

    When there is more than one page of the Row Cache Queue Length
    screen, the header section contains the page number currently
    displayed and the total number of pages in the display. 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.

    The Row Cache Queue Length screen is not recorded in the binary
    output file produced using the Output qualifier. Consequently,
    this screen is not available when you replay a binary file using
    the Input qualifier.
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