DI/IoC Container Performance Benchmark Comparison?

c# structuremap ioc-container ninject autofac
David Hoerster picture David Hoerster · Mar 15, 2011 · Viewed 8.3k times · Source

I've found some 2008 benchmark results for testing the performance of several of the top .NET DI/IoC containers here. But I haven't been able to find any updated results. Are there any benchmarks out there that compare some of the big IoC containers (StructureMap, Unity, Ninject, Autofac, Castle Windsor, etc.)?

Answer

Reed Copsey picture Reed Copsey · Mar 15, 2011

I would not recommend using performance benchmarks to pick an IoC container. There are many, many more important factors, such as feature set, development roadmap and maintainability, etc.

Realize that the benchmark you're citing is, in the worst case, only showing a 3-4x difference in speed over 1 million calls. In a "real world" scenario, DI/IoC is used to wire up dependencies, and will have a very minimal impact on overall application performance, as this construction phase is an incredibly small portion of your overall runtime. Choosing a "high performance" vs. a "low performance" IoC container will likely have no discernible impact on your application's perceived performance.

In the unlikely scenario that performance is truly important to your specific usage case, a benchmark is unlikely to be a valid measure of how the IoC container's performance will impact you, as benchmarks tend to be skewed towards a specific problem set. I would highly recommend doing your own profiling and measurement if you truly believe this is a serious issue.

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