How do you find the cause of slowness in your app?

• bullet

  27 6,984 7.7 Ruby

  help to kill N+1 queries and unused eager loading

This is good advice, it'll likely pick out some glaring issues right away. I would generally recommend looking at DB queries here too and recommend Bullet, but most software like DataDog, AppSignal etc will often also point N+1 and issues like it out.

• flamegraph

  3 381 0.0 HTML

  Flamegraph profiling support for Ruby 2.0 (by SamSaffron)

I also like using the flamegraph gem (https://github.com/SamSaffron/flamegraph).

• InfluxDB

  www.influxdata.com sponsored

  Power Real-Time Data Analytics at Scale. Get real-time insights from all types of time series data with InfluxDB. Ingest, query, and analyze billions of data points in real-time with unbounded cardinality.

  

• rails-mini-profiler

  7 403 5.8 Ruby

  Performance profiling for Rails, made simple 🦔

I'd suggest checking out - https://github.com/hschne/rails-mini-profiler As well as checking and monitoring your log for N+1's, usually that's an applications largest performance bottleneck.

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