Every node in magnolia gets the mix:versionable assigned no matter if the node is foreseen to be versioned or not (mgnl:contentNode, mgnl:metaData, ..). This slows down the saving process of created nodes a lot (about factor 4).

As we only version pages the mixin is needed on pages only.

The steps involved in the process would be:

• change info.magnolia.cms.core.DefaultContent.DefaultContent(Node, String, String, AccessManager)
• use mix:referencable (otherwise the activation mechanism is broken)
• change default nodetype definitions
• remove mixin from metaData
• add mixin to content (but not contentNode)
• update task for existing content
• use a proper nodetype for dms documents (not mgnl:contentNode)