Performance Tuning an Object-Relational MapperKey concepts and approaches

ORMs are useful

Your messy code

My slick ORM

It’s not that easy

IMPACT

#ORMHate

Why care about how they work?

Why care about performance issues?

The main performance concerns

Too little Lazy. Too lazy.

Too long Elapsed time.

Too much Eager. Too eager.

Situations Grids

1. Profile Common Scenarios

Tools Profilers

Tracing (i.e. EFTracingProvider)

LinqPad

Log

Free Profilers Down to business

Premium Profilers See ORM contexts

Code that generates SQL easier to see

Bells & whistles (query plans, rows,

2. Optimize queries

3. Eager/lazy settings

4. And more