Yukihiro M. wrote:
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ruby 1.8.4 (2006-03-01) [i686-linux]
user system total real
foo 1.090000 0.100000 1.190000 ( 1.203012)
bar 0.980000 0.040000 1.020000 ( 1.023069)
qux new empty 1.570000 0.340000 1.910000 ( 1.943319)
qux new 2.920000 1.870000 4.790000 ( 14.304892)
qux search 0.470000 0.020000 0.490000 ( 1.712328)
qux 3.150000 0.420000 3.570000 ( 21.151487)
ruby 1.9.0 (2006-03-01) [i686-linux]
user system total real
foo 0.980000 0.110000 1.090000 ( 1.101956)
bar 0.890000 0.040000 0.930000 ( 0.944269)
qux new empty 1.330000 0.340000 1.670000 ( 1.684494)
qux new 6.240000 0.050000 6.290000 ( 6.378824)
qux search 0.460000 0.000000 0.460000 ( 0.463881)
qux 6.830000 0.010000 6.840000 ( 6.937301)
ruby 1.8.4 (2005-12-24) [i386-cygwin]
user system total real
foo 1.051000 0.010000 1.061000 ( 1.061000)
bar 0.981000 0.000000 0.981000 ( 0.991000)
qux new empty 2.053000 0.030000 2.083000 ( 2.083000)
qux new 3.285000 0.280000 3.565000 ( 11.176000)
qux search 0.341000 0.000000 0.341000 ( 0.360000)
qux 3.595000 0.260000 3.855000 ( 14.581000)
ruby 1.9.0 (2006-04-08) [i386-cygwin]
user system total real
foo 1.041000 0.000000 1.041000 ( 1.061000)
bar 0.961000 0.000000 0.961000 ( 0.961000)
qux new empty 1.242000 0.030000 1.272000 ( 1.272000)
qux new 4.997000 0.020000 5.017000 ( 5.017000)
qux search 0.350000 0.000000 0.350000 ( 0.360000)
qux 5.238000 0.000000 5.238000 ( 5.278000)
–
e$B>.Gwe(B
@re = /^\w±\w+$/ # Some random expression
def foo(str)
str =~ @re
end
def bar(str)
str =~ /^\w±\w+$/
end
def qux(str)
str =~ Regexp.new("/^\w±\w+$/")
end
def qux_new(str)
Regexp.new("/^\w±\w+$/")
end
def qux_new_empty(str)
Regexp.new("")
end
def qux_search(str)
str =~ //^\w±\w+$//
end
require ‘benchmark’
include Benchmark
N = 300_000
bm(16) do |test|
GC.disable
test.report(“foo”) do
N.times {foo(“abc-xyz”)}
end
GC.enable
GC.start
GC.disable
test.report(“bar”) do
N.times {bar(“abc-xyz”)}
end
GC.enable
GC.start
GC.disable
test.report(“qux new empty”) do
N.times {qux_new_empty(“abc-xyz”)}
end
GC.enable
GC.start
GC.disable
test.report(“qux new”) do
N.times {qux_new(“abc-xyz”)}
end
GC.enable
GC.start
GC.disable
test.report(“qux search”) do
N.times {qux_search(“abc-xyz”)}
end
GC.enable
GC.start
GC.disable
test.report(“qux”) do
N.times {qux(“abc-xyz”)}
end
end