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hotspots

a rails performance tool.

collecting data

require 'memprof/tracer'
config.middleware.use Memprof::Tracer

The Memprof::Tracer middleware will record JSON stats about each incoming request to /tmp/memprof_tracer-PID.json

analyzing data

bundle install
./bin/hotspots /tmp/memprof_tracer-*.json hotspots-report/
open hotspots-report/index.html

screenshots

summary

top controllers and actions

request/response types

response time

gc and objects

sql

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a graphical view into your rails app's performance

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