#043 Profiling

About memory profiling in Ruby.

Notes

WIP: just dropping some unorganised notes for now..

Get current ruby process memory usage

See also:

• Get current ruby process memory usage (SO)
• os gem

Running the test_get_process_memory.rb script:

$ ruby test_get_process_memory.rb
RSS according to OS.rss_bytes: 17.5104 MB
RSS according to ps: 17.522688 MB

memory_profiler gem

• memory_profiler gem
• memory_profiler github
• Ruby on Rails Memory Profiling (2015)

With NewRelic

https://docs.newrelic.com/docs/agents/ruby-agent/features/developer-mode Developer mode is removed and no longer supported as of Ruby agent version 4.1.0.

Include the newrelic_rpm gem in your Gemfile and invoke it thus:

NewRelic::Agent::Samplers::MemorySampler.new.sampler.get_sample

Credits and References

• os gem
• memory_profiler gem
• How do I track down a memory leak in my Ruby code? (SO)
• rack-mini-profiler - the Secret Weapon of Ruby and Rails Speed
• Finding the cause of a memory leak in Ruby
• Memory-hungry Ruby daemons
• Visualizing Your Ruby Heap