From: Derek Chesterfield <groups@...>
Date: 2008-01-13T09:15:10+09:00
Subject: 1.9 significantly slower than 1.8 on Mac

I know 1.9.0 is still a work in progress, but I was expecting to see  
some benefit from YARV already. However, this simple script showing a  
typical bit of logfile processing takes over 70% LONGER under Ruby 1.9  
on a Mac Pro:

> $ cat logreport2.rb
> require 'benchmark'
> include Benchmark
>
> logfile=<<END_OF_STRING
> 23:59:16 drop   10.14.241.252 >eth2c1 rule: 1015; rule_uid:  
> {6AADF426-0D0C-4C20-A027-06A6DC8C6CE2}; src: 172.25.20.79; dst:  
> 10.14.65.137; proto: tcp; product: VPN-1 & FireWall-1; service:  
> lotus; s_port: 57150;
> 23:59:15 drop   10.14.241.251 >eth2c1 rule: 1015; rule_uid:  
> {6AADF426-0D0C-4C20-A027-06A6DC8C6CE2}; src: 172.25.40.88; dst:  
> 10.14.65.37; proto: tcp; product: VPN-1 & FireWall-1; service:  
> TCP1801; s_port: 24511;
> 23:59:15 drop   10.14.241.251 >eth1c0 rule: 1015; rule_uid:  
> {6AADF426-0D0C-4C20-A027-06A6DC8C6CE2}; src: 10.14.163.59; dst:  
> 10.24.0.2; proto: udp; product: VPN-1 & FireWall-1; service: domain- 
> udp; s_port: udp1025-1027;
> END_OF_STRING
>
> bm(12) do |test|
>   test.report('Simple:') do
>     500000.times do
>       src=Hash.new(0)
>       logfile.each_line do |line|
>       	if (m=line.match /src: (.*?);/)
>       		src[m[1]]= src[m[1]] +1
>       	end
>       end
>     end
>   end
> end

$ ruby -v
> ruby 1.8.6 (2007-09-24 patchlevel 111) [universal-darwin9.0]

$ ruby logreport2.rb
>                   user     system      total        real
> Simple:       7.960000   0.000000   7.960000 (  7.965567)

$ ruby19 -v
> ruby 1.9.0 (2007-12-25 revision 14709) [i686-darwin9.1.0]

$ ruby19 logreport2.rb
>                   user     system      total        real
> Simple:      13.750000   0.010000  13.760000 ( 13.754742)