do-jdbc-reader-benchmark.rb

require 'benchmark'
require 'rubygems'
require 'addressable/uri'
require 'pathname'
include Benchmark

dir = File.dirname(__FILE__)
lib_path = File.expand_path("#{dir}/lib")
$LOAD_PATH.unshift lib_path unless $LOAD_PATH.include?(lib_path)
# put data_objects from repository in the load path
# DO NOT USE installed gem of data_objects!
do_lib_path = File.expand_path("#{dir}/../data_objects/lib")
$LOAD_PATH.unshift do_lib_path unless $LOAD_PATH.include?(do_lib_path)

jdbc_lib_path = File.expand_path(File.join(File.dirname(__FILE__), '..', 'do_jdbc', 'lib'))
$LOAD_PATH.unshift jdbc_lib_path unless $LOAD_PATH.include?(jdbc_lib_path)
require 'do_jdbc'


require 'data_objects'

DATAOBJECTS_SPEC_ROOT = Pathname(__FILE__).dirname.parent.parent + 'data_objects' + 'spec'
Pathname.glob((DATAOBJECTS_SPEC_ROOT + 'lib/**/*.rb').to_s).each { |f| require f }

require 'do_h2'

ITER = 100000
bm(12) do |test|
  conn = DataObjects::Connection.new("jdbc:h2:mem")
  
  test.report("Open, move and close reader") do
    ITER.times do |t|
      reader = conn.create_command("SELECT code, name FROM widgets WHERE ad_description = ? order by id").execute_reader('Buy this product now!')
      reader.next!
      y = reader.values
      reader.close
    end
  end
  
  test.report("Reader#field_count") do
    ITER.times do |t|
      reader = conn.create_command("SELECT code, name FROM widgets WHERE ad_description = ? order by id").execute_reader('Buy this product now!')
      z = reader.field_count
      reader.close
    end
  end

  test.report("Reader#fields") do
    ITER.times do |t|
      reader = conn.create_command("SELECT code, name FROM widgets WHERE ad_description = ? order by id").execute_reader('Buy this product now!')
      q = reader.fields
      reader.close
    end
  end
end

results-10000 ITER.txt

e6ff922
-------

                  user     system      total        real
Open, move and close reader  3.802000   0.000000   3.802000 (  3.803000)
Reader#field_count  3.230000   0.000000   3.230000 (  3.230000)
Reader#fields  3.220000   0.000000   3.220000 (  3.220000)

                  user     system      total        real
Open, move and close reader  3.791000   0.000000   3.791000 (  3.791000)
Reader#field_count  3.219000   0.000000   3.219000 (  3.219000)
Reader#fields  3.210000   0.000000   3.210000 (  3.210000)

                  user     system      total        real
Open, move and close reader  3.777000   0.000000   3.777000 (  3.777000)
Reader#field_count  3.237000   0.000000   3.237000 (  3.237000)
Reader#fields  3.244000   0.000000   3.244000 (  3.244000)

cfe59f4
-------

                  user     system      total        real
Open, move and close reader  4.165000   0.000000   4.165000 (  4.165000)
Reader#field_count  3.610000   0.000000   3.610000 (  3.611000)
Reader#fields  3.641000   0.000000   3.641000 (  3.641000)

Open, move and close reader  4.145000   0.000000   4.145000 (  4.146000)
Reader#field_count  3.581000   0.000000   3.581000 (  3.581000)
Reader#fields  3.592000   0.000000   3.592000 (  3.593000)

                  user     system      total        real
Open, move and close reader  4.166000   0.000000   4.166000 (  4.166000)
Reader#field_count  3.597000   0.000000   3.597000 (  3.597000)
Reader#fields  3.633000   0.000000   3.633000 (  3.633000)

cb6dc70
-------

                  user     system      total        real
Open, move and close reader  4.223000   0.000000   4.223000 (  4.223000)
Reader#field_count  3.670000   0.000000   3.670000 (  3.670000)
Reader#fields  3.747000   0.000000   3.747000 (  3.747000)

                  user     system      total        real
Open, move and close reader  4.144000   0.000000   4.144000 (  4.144000)
Reader#field_count  3.607000   0.000000   3.607000 (  3.607000)
Reader#fields  3.645000   0.000000   3.645000 (  3.645000)

Open, move and close reader  4.216000   0.000000   4.216000 (  4.216000)
Reader#field_count  3.680000   0.000000   3.680000 (  3.680000)
Reader#fields  3.668000   0.000000   3.668000 (  3.668000)

results-100000 ITER.txt

e6ff922 (ivars)
-------

                  user     system      total        real
Open, move and close reader 38.439000   0.000000  38.439000 ( 38.439000)
Reader#field_count 35.685000   0.000000  35.685000 ( 35.685000)
Reader#fields 35.142000   0.000000  35.142000 ( 35.142000)

8617aae (before mkristian's latest refactorings)
-------

                  user     system      total        real
Open, move and close reader 38.970000   0.000000  38.970000 ( 38.971000)
Reader#field_count 36.931000   0.000000  36.931000 ( 36.931000)
Reader#fields 37.936000   0.000000  37.936000 ( 37.936000)

after
-----

                  user     system      total        real
Open, move and close reader 37.764000   0.000000  37.764000 ( 37.764000)
Reader#field_count 36.625000   0.000000  36.625000 ( 36.625000)
Reader#fields 37.067000   0.000000  37.067000 ( 37.067000)

results-100000 ITER_client_server_mode.txt

jruby --server do-jdbc-reader-benchmark.rb (--server mode)
                  user     system      total        real
Open, move and close reader 26.184000   0.000000  26.184000 ( 26.184000)
Reader#field_count 20.658000   0.000000  20.658000 ( 20.658000)
Reader#fields 21.217000   0.000000  21.217000 ( 21.217000)

jruby  do-jdbc-reader-benchmark.rb (--client mode)
--------------------------------------------------
Open, move and close reader 41.294000   0.000000  41.294000 ( 41.294000)
Reader#field_count 39.075000   0.000000  39.075000 ( 39.075000)
Reader#fields 39.854000   0.000000  39.854000 ( 39.854000)