statsd parser

benchmark.rb

tests = [
  'test:123|g',
  'test:1232|g',
  'timer:1235|ms',
  'invalid',
  'countera:1234|c',
  'counterb:12234|c|@1.0',
  'counterc:1234|c|@1',
  'counterd:12234|c|@1.01',
  'countere:-12|c|@1.0',
  'gauge:1|g',
  'gauge.complex:1123|g'
]

joined_tests = tests.join("\n")

require "pp"
require "benchmark"

N = 10_000
parser = StatsD::Parser.new

pp parser.run(joined_tests)

puts "Parser: #{parser.class}, N: #{N}"

Benchmark.bmbm do |x|
  x.report("Single Line") { N.times { tests.each {|n| parser.run(n) } } }
  x.report("Multiple Lines") { N.times { parser.run(joined_tests)  } }
end

results.txt

Ruby, manual string mangling (Node's algorithm)
Parser: NodeParser, N: 10000
Rehearsal --------------------------------------------------
Single Line      0.960000   0.000000   0.960000 (  1.209171)
Multiple Lines   0.880000   0.010000   0.890000 (  1.035960)
----------------------------------------- total: 1.850000sec

                     user     system      total        real
Single Line      1.000000   0.000000   1.000000 (  1.740574)
Multiple Lines   0.880000   0.010000   0.890000 (  0.901065)


Ragel -> Ruby
Parser: StatsD::Parser, N: 10000
Rehearsal --------------------------------------------------
Single Line      5.510000   0.020000   5.530000 (  5.975759)
Multiple Lines   5.190000   0.010000   5.200000 (  5.531701)
---------------------------------------- total: 10.730000sec

                     user     system      total        real
Single Line      5.540000   0.010000   5.550000 (  5.682052)
Multiple Lines   5.110000   0.020000   5.130000 (  5.281538)


Ragel -> C Ruby Ext
Parser: StatsD::Parser, N: 10000
Rehearsal --------------------------------------------------
Single Line      0.100000   0.000000   0.100000 (  0.100121)
Multiple Lines   0.060000   0.000000   0.060000 (  0.054484)
----------------------------------------- total: 0.160000sec

                     user     system      total        real
Single Line      0.090000   0.000000   0.090000 (  0.096089)
Multiple Lines   0.060000   0.000000   0.060000 (  0.054760)