Red Hat DIRECTORY SERVER 8.0 - ADMINISTRATION Administration Manual page 404

Chapter 13. Monitoring Server and Database Activity
Performance Metric
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)
Table 13.8. Summary Information
Performance Metric
Hits
Tries
Hit Ratio
386
Current Total
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, 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
Database Performance"
changing this value using the Directory Server
Console.
The total size of directory entries currently
present in the entry cache.
The size of the entry cache maintained by
the directory. This value is managed by the
Maximum Cache Size setting. See
"Tuning Database Performance"
on changing this value using the Directory Server
Console.
The total number of directory entries currently
present in the entry cache.
The maximum number of directory entries that
can be maintained in the entry cache. This value
is managed by the Maximum Entries in Cache
Section 15.2, "Tuning Database
setting. See
Performance"
for information on changing this
value using the Directory Server Console.
Current Total
The number of times the database cache
successfully supplied a requested page. A page
is a buffer of the size 2K.
The number of times the database cache was
asked for a page.
The ratio of database cache hits to database
cache tries. The closer this value is to 100%,
the better. Whenever a directory operation
attempts to find a portion of the database that is
not present in the database cache, the directory
has to perform a disk access to obtain the
Section 15.2, "Tuning
for information on
Section 15.2,
for information