performance issue with WCF data services
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I am new to WCF data services. I have created one sample POC on WCF data service using ADO .NET Entity framework. 

When i test Data service by a test project by adding WCF data service as a service reference, a simple select statement for 1000 rows, it took around 25 sec.
Out of 25 sec it took only 5 sec for querying data from DB (Got this info after profiling database).

its weird that WCF data service took around 20 sec for just translation and transport.

Any idea why its taking so much time for translation and transport?