3. TABULAR REPORTS, GRAPHS, AND MICF INQUIRIES › 3.3 MICF Inquiries › 3.3.1 MICF Inquiry Descriptions › 3.3.1.3 Performance Analysis Inquiries › 3.3.1.3.2 NPM Daily NCP Buffer Utilization

3.3.1.3.2 NPM Daily NCP Buffer Utilization

INTENDED USE:
 
   This chart helps determine the adequacy and utilization of
   memory in the communications control unit (CCU).
 
FORMAT:
 
   This display produces a vertical bar chart of average free
   buffer queue length in the network control program by
   hour.

INQUIRY ID:

   Color Graphics:  SNTCD7
   Printer Graphics:  SNTPD7

DATA SOURCE (File/Timespan):

   SNTNAF01 - Previous day

DATA ELEMENTS USED:

   HOUR, NAFAVFBQ, NCPNAME

CALCULATIONS:

   None

USAGE CONSIDERATIONS:

   This inquiry is produced from Network Performance Monitor
   (NPM) network data.  After the NCP load module (NCPGEN) is
   loaded into the CCU, the remaining memory is allocated for
   buffers.  Thus, the buffering capacity of the CCU is a
   function of the size of the NCPGEN and the amount of
   installed memory in the CCU.  The maximum available NCP
   buffer's value is the number of buffers initially
   allocated.  The average free buffer queue length indicates
   the number of buffers that are generally available.  The
   free buffer low-water mark is the lowest number of buffers
   that were available during the interval.  The average free
   buffer count at slowdown is the number of buffers that
   were left when the CCU became severely memory-constrained.
   Network performance is being impaired if the free buffer
   low-water mark is consistently below the average free
   buffer count at slowdown.  A memory upgrade (if possible)
   should be considered if the average free buffer queue
   length is consistently close to the average free buffer
   count at slowdown.  Otherwise, some of the load on the CCU
   may have to be shifted to another unit.

                                     NPM Daily NCP Buffer Utilization - Avg. No. Free Buffers                                     1
 
 
INQUIRY:  SNTPD7                                                                                                RUN DATE:  03SEPyy
 
------------------------------------------------- N=NETWORK1 S=ETET NCP=NCPT15D ---------------------------------------------------
 
Free Buffers Sum
 
 8,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***       ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 7,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 6,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 5,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 4,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 3,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 2,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
 1,000 +                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       |                                ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***  ***
       ---------------------------------------------------------------------------------------------------------------------------
           0    1    2    3    4    5    6    7    8    9    10   11   12   13   14   15   16   17   18   19   20   21   22   23
 
                                                              Hour Of Day

 Figure 3-