require 'rubygems'
require 'sequel'
require 'benchmark'
# set up Sequel
Sequel::Model.db = DB = Sequel.sqlite('perf_sequel.db')
class SequelItem < Sequel::Model(:items)
set_schema do
primary_key :id
varchar :name
text :description
boolean :active
timestamp :created_at
end
end
# create schema and populate
SequelItem.create_table!
1000.times do |i|
DB[:items].insert(:name => "record_#{i}", :description => "test record", :active => i.remainder(3).zero?, :created_at => Time.now)
end
# run benchmarks
Benchmark.bmbm do |x|
x.report('sequel single-thread') do
100.times do
SequelItem.where(:active => false).all
end
end
x.report('sequel threaded') do
threads = []
10.times do
t = Thread.new do
10.times do
SequelItem.where(:active => false).all
end
end
threads.push(t)
end
threads.each { |t| t.join }
end
end
SequelItem.drop_table
Refactorings
No refactoring yet !
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second of three, not as fast as ActiveRecord - why?