class Perf def initialize() @items = [] end def add(title, op, &blk) @items << Item.new(title, op, &blk) end def run(iter) base = Item.new(nil, nil) { } base.run(iter, 0.0) @items.each do |i| i.run(iter, base.duration) if i.error.nil? puts "#{i.title}.#{i.op} #{iter} times in %0.3f seconds or %0.3f #{i.op}/sec." % [i.duration, iter / i.duration] else puts "***** #{i.title}.#{i.op} failed! #{i.error}" end end summary() end def summary() fastest = nil slowest = nil width = 6 @items.each do |i| next if i.duration.nil? width = i.title.size if width < i.title.size end iva = @items.clone iva.delete_if { |i| i.duration.nil? } iva.sort_by! { |i| i.duration } puts puts "Summary:" puts "%*s time (secs) rate (ops/sec)" % [width, 'System'] puts "#{'-' * width} ----------- --------------" iva.each do |i| if i.duration.nil? else puts "%*s %11.3f %14.3f" % [width, i.title, i.duration, i.rate ] end end puts puts "Comparison Matrix\n(performance factor, 2.0 means row is twice as fast as column)" puts ([' ' * width] + iva.map { |i| "%*s" % [width, i.title] }).join(' ') puts (['-' * width] + iva.map { |i| '-' * width }).join(' ') iva.each do |i| line = ["%*s" % [width, i.title]] iva.each do |o| line << "%*.2f" % [width, o.duration / i.duration] end puts line.join(' ') end puts end class Item attr_accessor :title attr_accessor :op attr_accessor :blk attr_accessor :duration attr_accessor :rate attr_accessor :error def initialize(title, op, &blk) @title = title @blk = blk @op = op @duration = nil @rate = nil @error = nil end def run(iter, base) begin start = Time.now iter.times { @blk.call } @duration = Time.now - start - base @duration = 0.0 if @duration < 0.0 @rate = iter / @duration rescue Exception => e @error = "#{e.class}: #{e.message}" end end end # Item end # Perf