gtpo1mgyOperations

ZVFAC INDICATE-Indicate VFA Measurements

Use this command to display information about the efficiency of virtual file access (VFA).

Requirements and Restrictions

None.

Format




Additional Information

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

ZVFAC HELP

ZVFAC ?

Examples

Information about the efficiency of VFA is displayed in the following example.

+--------------------------------------------------------------------------------+
|User:   ZVFAC IND                                                               |
|                                                                                |
|System: VFAC0024I 17.26.20 VFA EFFICIENCY STATISTICS                            |
|                                                                                |
|          FAST RSHT'S IN USE (PERCENT)       3                                  |
|          AVERAGE ALIAS CHAIN LENGTH       1.04                                 |
|          LONGEST ALIAS CHAIN                 2                                 |
|                                                                                |
|          MASTER RSHT'S IN USE (PERCENT)     3                                  |
|          AVERAGE ALIAS CHAIN LENGTH       1.02                                 |
|          LONGEST ALIAS CHAIN                 2                                 |
|                                                                                |
|          PROG READS      0 PER SEC.                                            |
|          DATA READS    913                                                     |
|          FIND I/O       49                                                     |
|          FILE CAND     913                                                     |
|          FILE IMMD     913                                                     |
|          FORCE FILE      0                                                     |
|          FILE NCAND      1                                                     |
|          REJECTED        0                                                     |
|          381  USAGE      2                                                     |
|          1055 USAGE      3                                                     |
|          4K   USAGE     44                                                     |
|                                                                                |
|                                                                                |
|          VFA-S HITS            0                                               |
|          VFA-X HITS         1786                                               |
|          VFA LOCK MISSES      43                                               |
|          VFA CONTENTIONS      21                                               |
|          RHT CONTENTIONS      21                                               |
|          CACHED RHT HITS     882                                               |
|          VFA LOCK AGEOUTS      0                                               |
|                                                                                |
|          INTERVAL      147 SECS.+                                              |
+--------------------------------------------------------------------------------+

Related Information

See TPF Database Reference for more information about VFA.