Gemfile

source 'https://rubygems.org'

gem 'faraday'
gem 'faraday_middleware'
gem 'environs'
gem 'pmap'
gem 'memoist'
gem 'require_all'
gem 'virtus'

gem 'pry-uber'
gem 'stackprof'
# Specify your gem's dependencies in saucer.gemspec
gemspec

profile.rb

require 'saucer'
require 'stackprof'

Dir.mkdir('tmp') unless Dir.exists?('tmp')
output = 'tmp/stackprof-cpu-myapp.dump'
StackProf.run(mode: :wall, out: output) do
  client = Saucer::Client.new
  client.jobs(500)
end

report

#!/usr/bin/env bash

stackprof tmp/stackprof-cpu-myapp.dump

report.output

λ 2.1.1 saucer report                                                                                                                           (●●●)(master)
==================================
  Mode: wall(1000)
  Samples: 14846 (37.99% miss rate)
  GC: 148 (1.00%)
==================================
     TOTAL    (pct)     SAMPLES    (pct)     FRAME
     11546  (77.8%)       11546  (77.8%)     block in Enumerable#process_core
       757   (5.1%)         757   (5.1%)     block in Net::HTTP#connect
       530   (3.6%)         530   (3.6%)     Faraday::Adapter::NetHttp#ssl_cert_store
       236   (1.6%)         236   (1.6%)     String#underscore
       104   (0.7%)         102   (0.7%)     OpenSSL::Buffering#close
       143   (1.0%)          72   (0.5%)     block in OpenSSL::SSL#verify_certificate_identity
        71   (0.5%)          71   (0.5%)     block (2 levels) in OpenSSL::SSL#verify_certificate_identity
        60   (0.4%)          60   (0.4%)     OpenSSL::Buffering#read_nonblock
        57   (0.4%)          57   (0.4%)     OpenSSL::Buffering#do_write
        56   (0.4%)          56   (0.4%)     block in Net::HTTP#connect
        54   (0.4%)          54   (0.4%)     block in OpenSSL::SSL::SSLContext#set_params
        51   (0.3%)          51   (0.3%)     URI::Parser#split
        47   (0.3%)          47   (0.3%)     Faraday::Utils::Headers#[]=
        46   (0.3%)          46   (0.3%)     JSON#parse
        81   (0.5%)          46   (0.3%)     Net::HTTPResponse.each_response_header
      1245   (8.4%)          42   (0.3%)     Net::HTTP#connect
       277   (1.9%)          41   (0.3%)     block in Saucer::Client#normalize_hash_keys
        38   (0.3%)          38   (0.3%)     rescue in Net::BufferedIO#rbuf_fill
       309   (2.1%)          32   (0.2%)     Saucer::Client#normalize_hash_keys
        68   (0.5%)          27   (0.2%)     URI::Generic#initialize
        64   (0.4%)          24   (0.2%)     block in Faraday::Options#update
        27   (0.2%)          24   (0.2%)     URI::Generic#find_proxy
        23   (0.2%)          23   (0.2%)     Net::BufferedIO#rbuf_consume
        30   (0.2%)          23   (0.2%)     OpenSSL::SSL::Nonblock#initialize
        21   (0.1%)          21   (0.1%)     Net::HTTPHeader#add_field
        21   (0.1%)          21   (0.1%)     Net::HTTP#D
        21   (0.1%)          21   (0.1%)     block in Net::HTTP#connect
        20   (0.1%)          20   (0.1%)     Net::HTTPHeader#[]
        20   (0.1%)          20   (0.1%)     block in Net::HTTPHeader#capitalize
        29   (0.2%)          19   (0.1%)     Faraday::Utils::Headers#merge!