Netscape NETSCAPE DIRECTORY SERVER 6.1 - ADMINISTRATOR, Administrator'S Manual

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Monitoring Database Activity
412 Netscape Directory Server Administrator’s Guide • August 2002
• Summary Information Table
• Database Cache Information Table
• Database File-Specific Table
General Information (Database)
The directory provides the following general database information:
• Database—Identifies the type of database that you are monitoring.
• Configuration DN—Identifies the distinguished name that you must use as a
search base to obtain these results using the
ldapsearch
command-line utility.
Summary Information Table
The Summary Information table provides the following information:
Table 12-5 Database Performance Monitoring - Summary Information
Performance Metric Current Total
Readonly status Indicates whether the database is currently in read-only mode. Your database is in
read-only mode when the
readonly
attribute is set to
on
.
Entry cache hits 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.
Entry cache tries 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.
Entry cache hit ratio 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 432 for
information on changing this value using the Server Console.
Current entry cache
size (in bytes) Indicates the total size of directory entries currently present in the entry cache.