Novell EDIRECTORY 8.8 SP3, Administration Manual, Page: 547 / 634

Maintaining Novell eDirectory 547
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Using Novell iMonitor
1 Click Agent Configuration Description: Agent Configuration button .
2 Click Database Cache , then view the following information:
3 Choose from the following options:
Parameter Description
blockcachepercent= 50 Sets the percentage of cache that is allocated to caching database
blocks.
cacheadjustinterval= 15 Sets the time (in seconds) in which eDirectory will evaluate its
utilization of free memory and adjust the overall cache size.
cachecleanupinterval= 15 Sets the time (in seconds) in which eDirectory will write dirty cache
blocks to disk.
cache= 16777216 Sets the hard limit (in bytes).
Database Cache Information Description
Maximum Size The maximum size (in KB) that the specified cache is allowed to
grow. to
Current Size The current size (in KB) of the specified cache.
Items Cached The number of items in the specified cache.
Old Versions Cached The number of old versions in the specified cache. Old versions of
cache items are kept to maintain the consistency of read transactions
in the database. In other words, if one thread is in a read transaction
and another is in a write transaction, old versions of blocks modified
by the writer are maintained on behalf of the reader. This is done so
that the reader’s results are guaranteed to produce a consistent view
during the life of its transaction even though modifications are taking
place during that time.
Old Versions Size The size (in KB) of the old version items cached.
Hits The number of times an item was successfully accessed from the
specified cache.
Hit Looks The number of items looked at in the cache before an item was
successfully accessed from the specified cache. The hit-look-to-hit
ratio is a measure of cache lookup efficiency. Normally, the ratio
should be close to 1:1.
Faults The number of times an item was not found in the specified cache
and had to be obtained in a lower level cache or from the disk.
Fault Looks The number of items looked at in the cache before it was determined
that the desired item was not in the specified cache. The fault-look-
to-fault ratio is a measure of cache lookup efficiency. Normally, the
ratio should be close to 1:1.