Logical record cache summary report
- Cache Name
The name of the cache.
- Cache Size
The number of entries in the cache.
- Timeout Value
The amount of time, in seconds, that an entry resides in the cache before it is removed.
- Read Calls Per Second
The number of calls to read an entry from the cache.
- Read Misses Per Second
The number of calls that were not satisfied by the cache because the entry either was not in the cache or had timed out and was not valid.
- Castouts Per Second
The number of valid entries that had to be removed from the cache to make room for a new entry.
- Hit Ratio
The ratio of read calls to read misses.
- Update Invalidates Per Second
The number of times the cache will request the coupling facility (CF) to invalidate the cache entries for other processors for the same hash name because of an updateCacheEntry call by the application. This count will be zero for processor unique caches.
- Read Buffer Invalidates Per Second
The number of times a CF notifies an application to invalidate an entry in the cache. This count will be zero for processor unique caches.
- Duplicate Hash Refused
The number of times a cache entry was not added to the cache because its 16-byte name was the same as an entry already in the cache.
The following shows an example of a z/TPF Logical Record Cache Summary report.
TPF LOGICAL RECORD CACHE SUMMARY
11 OBSERVATIONS
CACHE NAME CACHE SIZE TIMEOUT READ CALLS READ MISSES CASTOUTS HIT RATIO UPDATE READ BUFFER DUPLICATE
(ENTRIES) VALUE PER SECOND PER SECOND PER SECOND INVALIDATES INVALIDATES HASH
(SECONDS) PER SECOND PER SECOND REFUSED
IDNSHOSTADDR 10 3600 0.00 0.00 0.00 0.00% 0.00 0.00 0
IDNSHOSTNAME 10 3600 0.00 0.00 0.00 0.00% 0.00 0.00 0
MAIL_CACHES 10 3600 0.00 0.00 0.00 0.00% 0.00 0.00 0
TPF_FS_DIR 200 60 0.35 0.24 0.00 30.76% 0.00 0.00 0
TPF_FS_INODE 200 60 0.53 0.01 0.00 98.30% 0.11 0.01 0
CASH 16 3 683.22 1.20 0.00 99.82% 1.04 1.17 0
MONEY 16 3 970.67 2.72 0.00 99.71% 2.97 2.65 0
GOLDBARS 16 3 701.56 0.88 0.00 99.87% 1.57 0.86 0
INGOTS 16 3 1201.32 2.50 0.00 99.84% 1.19 0.82 0
DOLLARS 16 3 664.93 1.00 0.00 99.86% 1.29 1.03 0
ANDCENTS 16 3 769.09 1.04 0.00 99.84% 0.92 1.31 0
PENNIES 16 3 850.94 1.33 0.00 99.81% 2.51 2.15 0
CACH2 16 3 1157.65 2.19 0.00 99.86% 1.47 0.96 0
CACH4 16 3 734.97 0.97 0.00 99.70% 1.49 1.20 0
CACH6 16 3 411.13 1.21 0.00 99.84% 1.19 0.82 0
LOCALC 16 3 0.00 0.00 0.00 0.00% 0.00 0.00 0