Chapter 13. Monitoring Server and Database Activity

Performance Metric

Current Total

 

 

Pages Written Out

The number of pages written from the cache

 

back to disk. A database page is written to

 

disk whenever a read-write page has been

 

modified and then subsequently deleted from

 

the cache. Pages are deleted from the

 

database cache when the cache is full and a

 

directory operation requires a database page

 

that is not currently stored in cache.

 

 

Read-Only Page Evicts

The number of read-only pages discarded

 

from the cache to make room for new pages.

 

 

Read-Write Page Evicts

The number of read-write pages discarded

 

from the cache to make room for new pages.

 

This value differs from Pages Written Out in

 

that these are discarded read-write pages that

 

have not been modified.

 

 

Table 13.9. Database Cache Information

Performance Metric

Current Total

 

 

Cache Hits

The number of times that a search result

 

resulted in a cache hit on this specific file.

 

That is, a client performs a search that

 

requires data from this file, and the directory

 

obtains the required data from the cache.

 

 

Cache Misses

The number of times that a search result

 

failed to hit the cache on this specific file. That

 

is, a search that required data from this file

 

was performed, and the required data could

 

not be found in the cache.

 

 

Pages Read In

The number of pages brought to the cache

 

from this file.

 

 

Pages Written Out

The number of pages for this file written from

 

cache to disk.

 

 

Table 13.10. Database File-Specific

 

4.2. Monitoring Databases from the Command Line

The directory's database activities can be monitored using any LDAP too, such as ldapsearch3, using the following characteristics:

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HP UX Red Hat Direry Server Software manual Monitoring Databases from the Command Line, Database Cache Information