gtpo1m2a | Operations |
Use this command to manage logical record caches.
Requirements and Restrictions
You can enter this command only from the basic subsystem (BSS) when the following parameters are specified:
Format
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Additional Information
Online help information is available for this command. To display the help information, enter one of the following:
ZCACH HELP
ZCACH ?
Examples
The following information is displayed in the examples:
The following example shows the names of the current logical record caches and their addresses.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP CTL | | | |System: CACH0002I 19.29.52 CACHE CONTROL AREA DISPLAY | | NAME TPF_FS_DIR ,ADDR 05073000 | | NAME TPF_FS_INODE ,ADDR 05287000 | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows the names of the current logical record caches and their assigned sizes as defined in the processor unique cache control record.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP CTL FILE | | | |System: CACH0026I 09.41.56 CACHE CONTROL RECORD DISPLAY | | NAME CACHE12456, ENTRY COUNT 000012456 | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows the attributes for logical record cache TPF_FS_DIR, which is using CF CFLOCK2 for cache synchronization.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP ATT TPF_FS_DIR | | | |System: CACH0004I 12.32.15 CACHE ATTRIBUTE DISPLAY | | NAME TPF_FS_DIR ,ADDR 050B9000, CF CFLOCK2 | | NUMBER HASH ENTRIES 97 NUMBER ENTRIES 0 | | PRIMARY KEY SIZE 256 SECONDARY KEY SIZE 4 | | ENTRY SIZE 328 DATA LENGTH 32 | | CAST OUT TIME 60 | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows the attributes for logical record cache TPF_FC_DIR. This particular logical record cache does not use a CF for cache synchronization.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP ATT TPF_FC_DIR | | | |System: CACH0004I 12.32.15 CACHE ATTRIBUTE DISPLAY | | NAME TPF_FC_DIR ,ADDR 050B9000 | | NUMBER HASH ENTRIES 97 NUMBER ENTRIES 0 | | PRIMARY KEY SIZE 256 SECONDARY KEY SIZE 4 | | ENTRY SIZE 328 DATA LENGTH 32 | | CAST OUT TIME 60 | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows synonym chain length information for logical record cache TPF_FS_DIR.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP SYN TPF_FS_DIR | | | |System: CACH0006I 12.32.15 CACHE SYNONYM DISPLAY | | NAME TPF_FS_DIR ,ADDR 050B9000 | | HASH ENTRIES 97 LONGEST SYNONYM CHAIN 0 | | HASH CHAINS WITH 0 ENTRIES 97 | | HASH CHAINS WITH 1 ENTRIES 0 | | HASH CHAINS WITH 2 ENTRIES 0 | | HASH CHAINS WITH 3 ENTRIES 0 | | HASH CHAINS WITH 4 ENTRIES 0 | | HASH CHAINS WITH 5 ENTRIES 0 | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows the current data collection counters for logical record cache TPF_FS_DIR.
+--------------------------------------------------------------------------------+ |User: ZCACH DISP CO TPF_FS_DIR | | | |System: CACH0005I 12.32.15 CACHE DATA COLLECTION COUNTER DISPLAY | | NAME TPF_FS_DIR ,ADDR 093C0000 | | NUMBER ENTRIES 100 CAST OUT TIME 60 | | CALLS 0 CASTOUTS 0 | | UPDATES 0 INVALIDATED 0 | | DUPLICATE HASH REFUSALS 0_ | | DISPLAY COMPLETE | +--------------------------------------------------------------------------------+
The following example shows processor shared caches being enabled to use the CF for cache synchronization.
+--------------------------------------------------------------------------------+ |User: ZCACH CF ENABLE | | | |System: CACH0019I 12.32.15 CACHE SUPPORT ENABLED TO USE CF | +--------------------------------------------------------------------------------+
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