Novell EDIRECTORY 8.8 SP3, Administration Manual, Page: 548 / 634

548 Novell eDirectory 8.8 Administration Guide
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Setting Cache Parameters
By default, eDirectory uses dynamic cache. If you have sufficient RAM to increase the eDirectory
cache size, you can increase the performance of eDirectory considerably for large databases by
allocating more RAM to the eDirectory cache.
The parameters that are listed in the following table can be adjusted to enhance your eDirectory
performance:
Option Description
Dynamic Adjust Allows the eDirectory database to dynamically adjust the amount of
system memory to be used for the cache based on the amount it
thinks it needs and the parameters specified below.
Cache Adjust Percentage The percentage of available memory allowed to be used for the
record and block caches combined.
Cache Size Constraints While dynamically adjusting, follow the specified constraints.
Namely, use no less than the specified amount of memory for the
cache and no more than the total amount of available memory
minus the specified amount.
Hard Limit The exact amount of system memory to be use for the cache.
Cache Maximum Size The size (in KB) of the record and block caches combined.
Block Cache Percentage The percentage of the system memory available for caching that
should be allocated to the block cache. The remaining percentage
will be allocated to the record cache.
Cache Adjust Interval This interval applies only when Dynamic Adjust is set. It controls
how often the cache size is adjusted, based on the specified
percentage and constraints.
Cache Cleanup Interval Controls how often unused old versions are removed from the
cache.
Cache Settings Permanent When this option is selected, any changes submitted through
iMonitor will be made permanent, overwriting any previously saved
settings or system defaults.
eDirectory Cache Parameter Description
blockcachepercent= value Sets the percentage of cache that is allocated to caching database
blocks. The default is 50.
cachecleanupinterval= value Sets the time (in seconds) in which eDirectory will write dirty cache blocks
to disk. The default is 15.
cacheadjustinterval= value Sets the time (in seconds) in which eDirectory will evaluate its utilization
of free memory and adjust the overall cache size. The default is 15.
cache= value Sets a hard limit (in bytes) of memory that eDirectory can use for caching.
cache=leave: value Specifies the minimum number of bytes to leave.