如何让Entity Framework在SQL Server中生成低效的查询？

I have an entity defined in an EF 4.0 that is based on a view. The view lays over a table with about 18 million rows of data. I have selected the 4 deterministic properties of the entity as a compound Entity key for this entity. I have exposed access to the model containing this view via an OData WCF data service. The WCF Data service is set to limit results like so I have an entity defined in an EF 4.0 that is b