gtpo1mgwOperations

ZVFAC DISPLAY-Display VFA Resources

Use this command to display the following information about virtual file access (VFA):

Requirements and Restrictions

None.

Format




Status
displays the current status of VFA.

Resource
displays the buffer ratios and reserve chain values.
Note:
You can specify this parameter only for the basic subsystem (BSS).

Buffer
displays the buffer status.

All
displays status, resource, and buffer information.

Additional Information

Online help information is available for this command. To display the help information, enter one of the following:

ZVFAC HELP

ZVFAC ?

Examples

The current status of VFA is displayed in the following example.

+--------------------------------------------------------------------------------+
|User:   ZVFAC DISP STA                                                          |
|                                                                                |
|System: VFAC0017I 07.59.27 DELAYED FILES DISABLED BY SYSTEM                     |
+--------------------------------------------------------------------------------+

The buffer ratios and reserve chain values are displayed in the following example.

+--------------------------------------------------------------------------------+
|User:   ZVFAC DISP RES                                                          |
|                                                                                |
|System: VFAC0006I 07.59.27 VFA KEYPOINT VALUES ARE:                             |
|             RAT1055- 10, RAT381-  5, RAT4095-  3                               |
|             RES1055-  5, RES381- 10, RES4095- 15                               |
|             COUNT- 36                                                          |
|                         CURRENT VFA VALUES ARE:                                |
|             RAT1055-  1, RAT381-  1, RAT4095-  1                               |
|             RES1055- 20, RES381- 20, RES4095- 20                               |
|             COUNT- 36                                                          |
+--------------------------------------------------------------------------------+

The buffer status is displayed in the following example.

+--------------------------------------------------------------------------------+
|User:   ZVFAC DISP BUF                                                          |
|                                                                                |
|System: VFAC0086I 17.08.51 VFA BUFFER STATUS                                    |
|             BUFFER TYPE                 4K    LARGE    SMALL                   |
|             NUMBER OF BUFFERS         4453     4557     4565                   |
|             NUMBER ON RESERVE          219      298      242                   |
|             NUMBER ON AGING           4334     4259     4323                   |
|             NUMBER IN IO WAIT            0        0        0                   |
|             NUMBER IN COMMIT             0       48        8                   |
|             PROGRAM RECORDS           2250        0        0                   |
|             DELAYED-FILE PENDING        13       16       10                   |
|             VFA_S LOCK BUFFERS          24       11       26                   |
|             VFA_X LOCK BUFFERS          13       16       10                   |
|             CACHED RHT LOCKS             9        9        4                   |
+--------------------------------------------------------------------------------+

All the status, resource, and buffer information is displayed in the following example.

+--------------------------------------------------------------------------------+
|User:   ZVFAC DISP ALL                                                          |
|                                                                                |
|System: ZVFAC DISP ALL                                                          |
|        VFAC0017I 07.59.27 DELAYED FILES DISABLED BY SYSTEM                     |
|        VFAC0006I 07.59.27 VFA KEYPOINT VALUES ARE:                             |
|             RAT1055- 10, RAT381-  5, RAT4095-  3                               |
|             RES1055-  5, RES381- 10, RES4095- 15                               |
|             COUNT- 36                                                          |
|                         CURRENT VFA VALUES ARE:                                |
|             RAT1055-  1, RAT381-  1, RAT4095-  1                               |
|             RES1055- 20, RES381- 20, RES4095- 20                               |
|             COUNT- 36                                                          |
|        VFAC0086I 07.59.27 VFA BUFFER STATUS                                    |
|             BUFFER TYPE                 4K    LARGE    SMALL                   |
|             NUMBER OF BUFFERS         1581     1582     1589                   |
|             NUMBER ON RESERVE          370      473      324                   |
|             NUMBER ON AGING           1211     1109     1265                   |
|             NUMBER IN IO WAIT            0        0        0                   |
|             NUMBER IN COMMIT             0        0        0                   |
|             PROGRAM RECORDS            360        0        0                   |
|             DELAYED-FILE PENDING         0        0        0                   |
|             VFA-S LOCK BUFFERS           0        0        0                   |
|             VFA-X LOCK BUFFERS          19        0        0                   |
|             CACHED RHT LOCKS             5        0        0                   |
+--------------------------------------------------------------------------------+

Related Information

See TPF Database Reference for more information about VFA, buffer ratios, reserve chain sizes, and the reuse threshold value.