Enable GC profiling in new relic

Question

I have a Ruby on Rails app, and I want to monitor the GC with New Relic. The documentation on how to do this is very scarce.

I already have New Relic collecting data from my app. What I want is to add GC profiling. Can anyone explain to me how this is done?

Answer 1

You can enable GC profiling instrumentation in New Relic using one of these calls in your application initialization:

• MRI 1.9.2 or higher: GC::Profiler.enable
• Ruby Enterprise Edition: GC.enable_stats

For your Rails application, you can either add this call to an initializer in config/initializers, or add it directly to your config/application.rb file.

You can find more information on this at Ruby agent: Garbage collection.