Hi all,
we are doing many stress tests over our web application above jackrabbit 2.14.0.
Starting from a given load, we are experiencing big differences between 4 nodes
versus 2 nodes, I mean that 2 nodes result much more performant than 4 ones.
We use Oracle 12, only one db node, our PersistenceManager is configured in
this way:
<PersistenceManager
class="org.apache.jackrabbit.core.persistence.pool.OraclePersistenceManager">
<param name="dataSourceName" value="ds1"/>
<!-- The size of the bundle cache in megabytes, the default is 8 -->
<param name="bundleCacheSize" value="512"/>
<param name="consistencyCheck" value="false"/>
<!-- This size defines the threshold of which size a property is included
in the bundle or is stored in the blob store, it is in bytes -->
<param name="minBlobSize" value="16384"/>
<param name="schemaObjectPrefix" value="${wsp.name}_"/>
</PersistenceManager>
Have you some hints or best practices to suggest when configure a Jackrabbit
cluster?
We have noticed that the most active statement is this:
update JOURNAL_GLOBAL_REVISION set REVISION_ID = REVISION_ID + 1
For which reason it was choosen to have a simple NUMBER column to manage such
an important information? It is really massively accessed and it may generate a
big bottle-neck in high concurrency, am I wrong?
Thanks in advance, best regards
[westpole]
Raffaele Gambelli
WebRainbow(r) Software Developer
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