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Monitoring Database Activity
Database Performance Monitoring - Summary Information (Continued)
Table 12-5
Performance Metric
Entry cache hits
Entry cache tries
Entry cache hit ratio
Current entry cache
size (in bytes)
Maximum entry cache
size (in bytes)
Current entry cache
size (in entries)
Maximum entry cache
size (in entries)
Database Cache Information Table
The Database Cache Information table provides caching information listed in
Table 12-6.
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Netscape Directory Server Administrator's Guide • May 2002
Current Total
Indicates the total number of successful entry cache lookups. That is, the total
number of times the server could process a search request by obtaining data from
the cache rather than by going to disk.
Indicates the total number of entry cache lookups since the directory was last
started. That is, the total number of search operations performed against your
server since server startup.
Ratio that indicates the number of entry cache tries to successful entry cache
lookups. This number is based on the total lookups and hits since the directory
was last started. The closer this value is to 100% the better. Whenever a search
operation attempts to find an entry that is not present in the entry cache, the
directory has to perform a disk access to obtain the entry. Thus, as this ratio drops
towards zero, the number of disk accesses increases and directory search
performance drops.
To improve this ratio, you can increase the number of entries that the directory
maintains in the entry cache by increasing the value of the "Maximum Entries in
Cache" attribute. See "Tuning Database Performance," on page 424 for
information on changing this value using the Server Console.
Indicates the total size of directory entries currently present in the entry cache.
Indicates the size of the entry cache maintained by the directory. This value is
managed by the "Maximum Cache Size" attribute. See "Tuning Database
Performance," on page 424 for information on changing this value using the
Server Console.
Indicates the total number of directory entries currently present in the entry
cache.
Indicates the maximum number of directory entries that can be maintained in the
entry cache. This value is managed by the "Maximum Entries in Cache" attribute.
See "Tuning Database Performance," on page 424 for information on changing
this value using the Server Console.
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