jtblin / gostatsd / 29

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travis-ci

Optimise (5-10x) performance of line parser

Old parser benchmark:

BenchmarkParseLineCounter-8                                  	 1000000	      2493 ns/op
BenchmarkParseLineCounterWithSampleRate-8                    	 1000000	      2186 ns/op
BenchmarkParseLineCounterWithTags-8                          	  300000	      5582 ns/op
BenchmarkParseLineCounterWithTagsAndSampleRate-8             	  300000	      5649 ns/op
BenchmarkParseLineGauge-8                                    	 1000000	      2356 ns/op
BenchmarkParseLineTimer-8                                    	 1000000	      1897 ns/op
BenchmarkParseLineSet-8                                      	  500000	      2210 ns/op
BenchmarkParseLineCounterWithDefaultTags-8                   	  500000	      2656 ns/op
BenchmarkParseLineCounterWithDefaultTagsAndTags-8            	  200000	      5951 ns/op
BenchmarkParseLineCounterWithDefaultTagsAndTagsAndNameSpace-8	  200000	      6467 ns/op

New parser benchmark:

BenchmarkParseLineCounter-8                                  	 5000000	       348 ns/op
BenchmarkParseLineCounterWithSampleRate-8                    	 3000000	       420 ns/op
BenchmarkParseLineCounterWithTags-8                          	 2000000	       680 ns/op
BenchmarkParseLineCounterWithTagsAndSampleRate-8             	 2000000	       748 ns/op
BenchmarkParseLineGauge-8                                    	 5000000	       341 ns/op
BenchmarkParseLineTimer-8                                    	 5000000	       344 ns/op
BenchmarkParseLineSet-8                                      	 5000000	       314 ns/op
BenchmarkParseLineCounterWithDefaultTags-8                   	 3000000	       489 ns/op
BenchmarkParseLineCounterWithDefaultTagsAndTags-8            	 2000000	       752 ns/op
BenchmarkParseLineCounterWithDefaultTagsAndTagsAndNameSpace-8	 2000000	       830 ns/op

176 of 176 new or added lines in 2 files covered. (100.0%)

406 of 955 relevant lines covered (42.51%)

6.42 hits per line