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http://jira.magnolia-cms.com/browse/MAGNOLIA-3594?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Jurjen de Groot updated MAGNOLIA-3594:
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Component/s: core
> performance issues on querying DMS repository
> ---------------------------------------------
>
> Key: MAGNOLIA-3594
> URL: http://jira.magnolia-cms.com/browse/MAGNOLIA-3594
> Project: Magnolia
> Issue Type: Bug
> Components: core
> Affects Versions: 4.4.2
> Environment: Ubuntu 10.04.2 LTS 64 bits
> tomcat 6.0.24-2ubuntu1.6
> mysql-server 5.1.41-3ubuntu12.10
> Reporter: Jurjen de Groot
> Assignee: Boris Kraft
> Attachments: threaddump-annexum-test-2.tdump.zip
>
>
> For a project we are querying the DMS for relevant documents, but when we
> are simulating a request by only 15 users at the same time the server's
> processor usage goes up to 100%. And all new requests are put on hold while
> the requests are waiting for the previous requests to be handled.
> We ran a thread dump including an analyzer. The dump is included as an
> attachment.
> Looking at the dump we can see that calling
> info.magnolia.module.dms.beans.Document.isDocument() takes a long time and
> subsequent threads are being blocked waiting for the call to end.
> In the isDocument method jackrabbit is being accessed and that is where it
> hangs.
> Our config file holds the following settings for the persistancemanager:
> <PersistenceManager
> class="org.apache.jackrabbit.core.persistence.db.SimpleDbPersistenceManager">
> <param name="driver" value="com.mysql.jdbc.Driver" />
> <param name="url" value="jdbc:mysql://mydb" />
> <param name="schema" value="mysql" /><!-- warning, this is not the
> schema name, it's the db type -->
> <param name="user" value="***" />
> <param name="password" value="***" />
> <param name="schemaObjectPrefix" value="${wsp.name}_" />
> <param name="externalBLOBs" value="false" />
> </PersistenceManager>
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