SQL filters unavailable

I've read about the SQL filters available in the Timeline viewer, but I can't see any. I'm trying to profile a local WCF service that connects to a database server on the network with a specfic endpoint using Entity Framework. Whether I do this by attaching to the running process or as an IIS app, I don't get SQL filter options.

I'm really not finding any useful information at all, to be honest! It doesn't seem to include time spent waiting for whatever SQL calls get made, and they're by far the slowest part of the WCF method I'm profiling, so I basically see that 99% of the execution is invisible to me.

Please help, wise sages.

Thanks, George