benchmark-report.md

Elm 0.15.1 vs 0.16 on Chrome

Result of running these benchmarks on Chrome 45.0.2454.101

These numbers seem to be pretty consistent on Blink-based browsers (Chrome and Opera) but are more like 20% to 50% improvements on FireFox, Safari, and IE. I am not sure how to explain that, so take these numbers more as an indicator of “Elm is generating faster code across the board” as opposed to “Elm is 10x faster!”

business logic from examples

check boxes

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
toggle boxes - 7 actions	28,277	263,424	9.32

todomvc

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
type in 5 tasks - 80 actions	2,152	18,573	8.63
do everything - 269 actions	382	1,101	2.88

Syntax

case expressions

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
Maybe.withDefault 0 (Just 42)	11,090,226	41,723,518	3.76
Maybe.withDefault 0 Nothing	11,592,266	44,721,889	3.86
isBlack Diamond	11,577,379	35,718,600	3.09
evaluate basicBoolean	3,841,394	17,689,892	4.61
evaluate fancyBoolean	1,999,006	11,576,469	5.71

let expressions

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
bind numbers, add them	17,098,659	75,893,573	4.44
tuple destructuring	327,967	73,194,881	223.18
record destructuring	251,713	72,069,854	286.32

record updates

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
1 of 2 fields	189,967	2,970,974	15.64
2 of 2 fields	116,983	2,699,606	23.08
2 of 2 new	361,041	30,316,190	83.97
3 of 5 fields	355,494	1,214,059	3.42
5 of 5 fields	94,264	1,213,257	12.87
5 of 5 new	260,526	28,545,331	109.57

record access

benchmark	0.15.1 ops/sec	0.16 ops/sec	comparison
2 of 2	17,003,678	42,816,182	2.52
4 of 10	14,723,307	33,334,457	2.26

💓