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@Bartuz
Forked from paneq/bench.rb
Created Jan 25, 2016
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cost of using exceptions for control flow compared to one SQL statement (ruby 2.1.4, rails 4.1.7, sqlite) for rails-refactoring.com . Development mode executed in rails console.
require 'benchmark'
ActiveRecord::Base.logger = nil
Benchmark.bmbm do |bench|
bench.report("SQL query") do
1000.times { Whatever.count }
end
bench.report("exception hit") do
1000.times do
begin
raise StandardError.new
rescue
end
end
end
bench.report("exception miss") do
1000.times do
begin
raise StandardError.new if false
rescue
end
end
end
end
Rehearsal --------------------------------------------------
SQL query 0.180000 0.010000 0.190000 ( 0.199253)
exception hit 0.050000 0.000000 0.050000 ( 0.050654)
exception miss 0.000000 0.000000 0.000000 ( 0.000050)
----------------------------------------- total: 0.240000sec
user system total real
SQL query 0.180000 0.010000 0.190000 ( 0.179669)
exception hit 0.050000 0.000000 0.050000 ( 0.048447)
exception miss 0.000000 0.000000 0.000000 ( 0.000054)
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