COMM (Communicate with MUF) › COMM EOJ (End MUF Processing) › Summary Reports Produced by the MUF During its EOJ Process › Memory Resident Data Facility Summary Information

Memory Resident Data Facility Summary Information

When the MUF is terminated, summary Memory Resident Data Facility (MRDF) information is written to the SYSPRINT file after the MUF startup options.

Note: The spacing in this example is expanded for clarity.

                                            M R D F     SUMMARY INFORMATION
 
 
                
 
                                                               VIRTUAL        COVERED        COVERED
AREA      USE      SIZE      BLOCKS  SPACE      MRDF READS   MRDF WRITES  1ST/ACT READS  NON-1ST READS     PERCENT
 
IXX00001  COVERED   83K          22  ADDRESS             1                            4              0  WITHIN 100
DEM00001  COVERED   62K          62  ADDRESS             1                            2              0  WITHIN 100
PAY00001  COVERED   62K          62  ADDRESS             1                            2              0  WITHIN 100
IXX00006  VIRTUAL    2M         510  ADDRESS             6             3                                  USED   0
IXX00999  COVERED   80K          21  ADDRESS             1                            3                 REUSED  25
DEM00999  COVERED   40K          40  ADDRESS             1                            2                 REUSED  33

This page of the report shows the following information:

AREA

Area DATACOM-NAME and database DATACOM-ID in the format aaannnnn.

USE

Indicates whether the resident area is COVERED or VIRTUAL.

SIZE

Amount of memory allocated for this area that contains the data, Index, or Log Area blocks. This is the amount used, not the size specified in the MUF startup options. SIZE values are printed as follows:

• Numbers 1 through 9999 are printed with a blank terminator, for example, 9999 is printed as 9999 followed by a blank.
• Numbers 10000 through 9999K are printed as n through nnnnK, rounded up.
• Numbers 9999K plus one through 9999M are printed as n through nnnnM, rounded up.
• Numbers above 9999M are printed with a G as the terminating character, rounded up.

BLOCKS

The number of data, Index, or Log Area blocks allocated to memory. COVERED is allocated in blocks and VIRTUAL is allocated in tracks.

SPACE

ADDRESS indicates no use of a data space and the data is allocated in normal memory (above the 24-bit line). DATA indicates use of a data space to contain the blocks provided. 64-BIT indicates that the data is allocated in z/OS 64-bit.

MRDF READS

Provides the number of blocks that were read from the MRDF space instead of from disk.

VIRTUAL MRDF WRITES

Provides the number of blocks that were written to the MRDF VIRTUAL space.

COVERED 1ST/ACT READS

Provides the number of blocks read from disk for either a FIRST or ACTIVE COVERED area.

COVERED NON-1ST READS

For a COVERED FIRST area only, provides the number of blocks read from disk which do not reside in the MRDF buffers.

PERCENT

Indicates the amount of use based on the following:

REUSED

(COVERED ACTIVE areas only.) Provides the percent of MRDF reads out of the total reads.

USED

(Virtual Areas Only.) Provides the percent of the space allocated which was actually used to service program requests.

WITHIN

(COVERED FIRST areas only.) Provides the percent of the total reads which occurred within the COVERED FIRST buffers.