ARJDBC Postgres perf changes

1.9.2 perf

ruby-1.9.2-p290 :001 > u = User.last.name
 => "Jon Calvert" 
ruby-1.9.2-p290 :002 > require 'benchmark'
 => nil 
ruby-1.9.2-p290 :003 > Benchmark.bm do | x|
ruby-1.9.2-p290 :004 >     x.report do
ruby-1.9.2-p290 :005 >       1000.times do
ruby-1.9.2-p290 :006 >         u = User.last.name
ruby-1.9.2-p290 :007?>       end
ruby-1.9.2-p290 :008?>     end
ruby-1.9.2-p290 :009?>   end
      user     system      total        real
  1.080000   0.160000   1.240000 ( 33.021254)
 => true 
ruby-1.9.2-p290 :010 > Benchmark.bm do | x|
ruby-1.9.2-p290 :011 >     x.report do
ruby-1.9.2-p290 :012 >       1000.times do
ruby-1.9.2-p290 :013 >         u = User.last.name
ruby-1.9.2-p290 :014?>       end
ruby-1.9.2-p290 :015?>     end
ruby-1.9.2-p290 :016?>   end
      user     system      total        real
  1.060000   0.160000   1.220000 ( 33.670949)
 => true 

fix-console.rb

jcalvert$ rails c

*** Using highline effectively in JRuby requires manually installing the ffi-ncurses gem.
*** jruby -S gem install ffi-ncurses
Using ActiveModel validations.
Loading development environment (Rails 3.0.9)
/Users/jcalvert/.rvm/rubies/jruby-1.6.5/lib/ruby/1.9/irb/input-method.rb:108 warning: Ignoring internal encoding UTF-8: it is identical to external encoding UTF-8
/Users/jcalvert/.rvm/rubies/jruby-1.6.5/lib/ruby/1.9/irb/input-method.rb:109 warning: Ignoring internal encoding UTF-8: it is identical to external encoding UTF-8
jruby-1.6.5 :001 > require 'benchmark'
 => nil 
jruby-1.6.5 :002 > Benchmark.bm do |r|
jruby-1.6.5 :003 >     r.report do
jruby-1.6.5 :004 >       User.last.email
jruby-1.6.5 :005?>     end
jruby-1.6.5 :006?>   end
      user     system      total        real
  0.735000   0.000000   0.735000 (  0.734000)
 => true 
jruby-1.6.5 :007 > 

 => true 
jruby-1.6.5 :007 > 

jrub 1.6.5 perf

jruby-1.6.5 :003 > Benchmark.bm do | x|
jruby-1.6.5 :004 >     x.report do
jruby-1.6.5 :005 >       1000.times do
jruby-1.6.5 :006 >         u = User.last
jruby-1.6.5 :007?>       end
jruby-1.6.5 :008?>     end
jruby-1.6.5 :009?>   end
      user     system      total        real
 36.938000   0.000000  36.938000 ( 36.938000)
 => true 
jruby-1.6.5 :010 > Benchmark.bm do | x|
jruby-1.6.5 :011 >     x.report do
jruby-1.6.5 :012 >       1000.times do
jruby-1.6.5 :013 >         u = User.last.name
jruby-1.6.5 :014?>       end
jruby-1.6.5 :015?>     end
jruby-1.6.5 :016?>   end
      user     system      total        real
 39.170000   0.000000  39.170000 ( 39.170000)
 => true 

unfix-console.rb

jcalvert$ rails c

*** Using highline effectively in JRuby requires manually installing the ffi-ncurses gem.
*** jruby -S gem install ffi-ncurses
Using ActiveModel validations.
Loading development environment (Rails 3.0.9)
/Users/jcalvert/.rvm/rubies/jruby-1.6.5/lib/ruby/1.9/irb/input-method.rb:108 warning: Ignoring internal encoding UTF-8: it is identical to external encoding UTF-8
/Users/jcalvert/.rvm/rubies/jruby-1.6.5/lib/ruby/1.9/irb/input-method.rb:109 warning: Ignoring internal encoding UTF-8: it is identical to external encoding UTF-8
jruby-1.6.5 :001 > require 'benchmark'
 => nil 
jruby-1.6.5 :002 > Benchmark.bm do |r|
jruby-1.6.5 :003 >     r.report do
jruby-1.6.5 :004 >       User.last.email
jruby-1.6.5 :005?>     end
jruby-1.6.5 :006?>   end
      user     system      total        real
  6.857000   0.000000   6.857000 (  6.856000)
 => true 
jruby-1.6.5 :007 >