Dart Reactivity Benchmark

Benchmark comparing different standalone Dart reactivity/signals frameworks.

Score Ranking

Rank	Framework	Score	Success Rate	Tests	Time
🥇	alien_signals	0.76	100.0%	35/35	3.68s
🥈	preact_signals	0.27	100.0%	35/35	9.76s
🥉	signals	0.24	100.0%	35/35	11.40s
4	mobx	0.04	100.0%	35/35	27.30s
5	solidart	0.02	82.9%	29/35	39.66s
6	state_beacon	0.00	77.1%	27/35	3.56s

Tip

Ranking algorithm

The ranking system evaluates frameworks based on multiple factors:

1. Test Case Scores

   • For each test case, the fastest passing implementation (with coefficient ≥ 0.5) serves as the baseline
   • Individual test scores are calculated as: (baseline_time / actual_time) * coefficient * weight
   • Test case weights are assigned based on operation types:
     • Regular operations: 1.0
     • Extended operations: 1.2-1.5

2. Success Coefficient

   • Full pass (coefficient = 1.0): Test completely successful
   • Partial pass (coefficient = 0.5): Part of the test failed
   • Complete fail (coefficient = 0): Test failed entirely

3. Final Score Calculation

   • Base score: Geometric mean of all weighted test case scores
   • Time factor: sqrt(fastest_total_time / framework_total_time)
   • Final score = base_score * time_factor

This scoring system balances individual test performance with overall execution time while accounting for test reliability.

Benchmark results of each framework

Test Case	solidart	mobx	state_beacon	signals	alien_signals	preact_signals
avoidablePropagation	2.23s	2.30s	163.86ms (fail)	213.60ms	190.12ms	211.08ms
broadPropagation	5.55s	4.37s	10.10ms (fail)	464.68ms	356.69ms	454.25ms
deepPropagation	2.03s	1.53s	140.98ms (fail)	180.05ms	131.28ms	176.54ms
diamond	3.50s	2.45s	196.49ms (fail)	283.73ms	239.67ms	275.37ms
mux	2.03s	1.82s	197.53ms (fail)	407.21ms	378.52ms	386.41ms
repeatedObservers	213.88ms	239.94ms	53.88ms (fail)	44.50ms	43.69ms	41.66ms
triangle	1.14s	783.80ms	80.69ms (fail)	101.69ms	86.33ms	98.57ms
unstable	347.91ms	356.27ms	349.36ms (fail)	77.29ms	60.54ms	69.44ms
molBench	1.74s	587.46ms	873μs	486.29ms	472.73ms	483.08ms
create_signals	67.83ms	70.40ms	73.07ms	29.04ms	20.11ms	4.55ms
comp_0to1	36.17ms	27.81ms	58.10ms	13.97ms	4.96ms	19.32ms
comp_1to1	43.30ms	53.57ms	55.50ms	17.41ms	11.21ms	15.70ms
comp_2to1	32.74ms	32.65ms	35.26ms	10.37ms	18.10ms	14.24ms
comp_4to1	13.21ms	16.94ms	18.67ms	7.35ms	1.73ms	11.00ms
comp_1000to1	2.09ms	22μs	53μs	5μs	3μs	4μs
comp_1to2	33.03ms	38.38ms	48.85ms	14.13ms	15.46ms	16.85ms
comp_1to4	27.51ms	30.03ms	46.40ms	14.21ms	9.57ms	21.22ms
comp_1to8	24.13ms	20.20ms	46.78ms	12.66ms	3.81ms	8.69ms
comp_1to1000	18.84ms	15.25ms	42.89ms	10.84ms	3.21ms	5.65ms
update_1to1	43.21ms	28.31ms	7.74ms	9.40ms	4.38ms	8.85ms
update_2to1	21.22ms	13.71ms	2.90ms	4.71ms	2.19ms	5.56ms
update_4to1	10.70ms	6.78ms	1.76ms	2.36ms	1.09ms	2.25ms
update_1000to1	126μs	82μs	15μs	23μs	11μs	21μs
update_1to2	21.24ms	14.77ms	4.30ms	4.73ms	2.19ms	4.36ms
update_1to4	10.90ms	6.80ms	1.48ms	2.37ms	1.09ms	2.19ms
update_1to1000	219μs	163μs	425μs	47μs	28μs	347μs
cellx1000	153.91ms	76.68ms	5.53ms	9.66ms	8.07ms	9.55ms
cellx2500	475.88ms	226.65ms	21.49ms	31.47ms	20.44ms	25.51ms
cellx5000	1.05s	551.27ms	63.01ms	59.96ms	43.70ms	62.91ms
10x5 - 2 sources - read 20.0% (simple)	2.65s (partial)	2.00s	259.92ms	510.94ms	230.91ms	426.60ms
10x10 - 6 sources - dynamic - read 20.0% (dynamic)	2.34s (partial)	1.55s	209.93ms	276.74ms	176.11ms	305.98ms
1000x12 - 4 sources - dynamic (large)	4.06s (partial)	1.72s	337.98ms	3.83s	281.89ms	3.39s
1000x5 - 25 sources (wide dense)	4.90s (partial)	3.54s	527.88ms	3.51s	402.85ms	2.52s
5x500 - 3 sources (deep)	2.02s (partial)	1.12s	233.46ms	227.63ms	195.96ms	229.16ms
100x15 - 6 sources - dynamic (very dynamic)	2.81s (partial)	1.70s	266.26ms	534.39ms	265.39ms	449.96ms

Tip

• (fail): Test case failed
• (half): Half of the test cases failed

Integrate into your project

You can easily integrate Dart reactivity benchmark into your project to provide benchmarking.

Install it

dart pub add dev:reactivity_benchmark

Writing Tests

class YourReactiveFramework extends ReactiveFramework {
  ...
}

void main() {
  final framework = YourReactiveFramework();
  runFrameworkBench(framework);
}

Local run benchmarks

Dart VM

dart run frameworks/[framework_name].dart

Run all benchamrks

bash bench.sh