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Novell eDirectory 8.8 Administration Guide
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addition to this memory allocation, libraries on Linux and UNIX normally do not return the freed
memory back to the OS.
For these reasons, we recommend allocating a fixed amount of RAM to the cache.
Fix the amount of RAM for Linux and UNIX systems by doing one of the following:
•
“Manually Creating a .ini File” on page 500
•
“Using Novell iMonitor” on page 500
Manually Creating a .ini File
1
Create a file called
_ndsdb.ini
in the same directory that the eDirectory database files (DIB
set) are located (usually in
/var/opt/novell/eDirectory/data/dib
).
2
Add the following parameters listed in to the
_ndsdb.ini
file:
Using Novell iMonitor
1
Click
Agent Configuration
.
2
Click
Database Cache
, then view the following information:
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.
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