Multi-engine (js / rust / wasm / java / dotnet) benchmark

5 reports · 31 workloads · median of 5 repetitions after 1 warmup · scale 1

darwin/arm64 · node v24.7.0 · rev 7f8854929523

js total baseline

3345.9 ms

31 workloads · plen

rust vs js

1.64x

2040.6 vs 3345.9 ms on 31 shared workloads

wasm vs js

1.39x

2407.5 vs 3345.9 ms on 31 shared workloads

java vs js

0.98x

3425.1 vs 3345.9 ms on 31 shared workloads

dotnet vs js

1.02x

3281.2 vs 3345.9 ms on 31 shared workloads

Reports

In run order. A total covers only the workloads that report measured; the speedup is computed on the subset it shares with js.

report	engine	workloads	total ms	vs js	shared	file
js	plen	31	3345.909	1.00x	31	baseline-js.json
rust	plen	31	2040.575	1.64x	31	baseline.json
wasm	plen	31	2407.471	1.39x	31	baseline-wasm.json
java	plen	31	3425.118	0.98x	31	baseline-java.json
dotnet	plen	31	3281.175	1.02x	31	baseline-dotnet.json

Where the time goes

parseimportgraphplanlevelevaluateoutputserialize

chain/10001000 tasks · 999 edges

4.209 ms 1.00x

rust

1.744 ms 2.41x

wasm

2.608 ms 1.61x

java

4.191 ms 1.00x

dotnet

1.968 ms 2.14x

wide/10001000 tasks · 999 edges

2.908 ms 1.00x

rust

1.523 ms 1.91x

wasm

2.561 ms 1.14x

java

3.460 ms 0.84x

dotnet

1.946 ms 1.49x

islands/10001000 tasks · 900 edges

2.735 ms 1.00x

rust

1.395 ms 1.96x

wasm

2.377 ms 1.15x

java

2.699 ms 1.01x

dotnet

1.816 ms 1.51x

wide/50005000 tasks · 4999 edges

12.646 ms 1.00x

rust

6.541 ms 1.93x

wasm

12.278 ms 1.03x

java

10.540 ms 1.20x

dotnet

8.942 ms 1.41x

islands/50005000 tasks · 4500 edges

11.629 ms 1.00x

rust

6.493 ms 1.79x

wasm

10.652 ms 1.09x

java

8.616 ms 1.35x

dotnet

8.875 ms 1.31x

chain/1000010000 tasks · 9999 edges

23.493 ms 1.00x

rust

13.609 ms 1.73x

wasm

22.266 ms 1.06x

java

15.375 ms 1.53x

dotnet

17.638 ms 1.33x

backward-flat/10001000 tasks · 999 edges

2.433 ms 1.00x

rust

1.290 ms 1.89x

wasm

2.294 ms 1.06x

java

1.846 ms 1.32x

dotnet

1.844 ms 1.32x

backward-calendar/10001000 tasks · 999 edges

2.476 ms 1.00x

rust

1.464 ms 1.69x

wasm

2.317 ms 1.07x

java

2.249 ms 1.10x

dotnet

2.236 ms 1.11x

backward-flat/50005000 tasks · 4999 edges

11.357 ms 1.00x

rust

6.887 ms 1.65x

wasm

11.112 ms 1.02x

java

7.511 ms 1.51x

dotnet

8.764 ms 1.30x

backward-calendar/50005000 tasks · 4999 edges

11.825 ms 1.00x

rust

7.941 ms 1.49x

wasm

11.847 ms 1.00x

java

9.065 ms 1.30x

dotnet

9.253 ms 1.28x

summary-expand/10002002 tasks · 1000000 edges

139.817 ms 1.00x

rust

29.985 ms 4.66x

wasm

35.379 ms 3.95x

java

90.825 ms 1.54x

dotnet

49.383 ms 2.83x

summary-shape/10002002 tasks · 1000000 edges

157.837 ms 1.00x

rust

36.715 ms 4.30x

wasm

45.226 ms 3.49x

java

71.983 ms 2.19x

dotnet

53.347 ms 2.96x

summary-block/10002002 tasks · 1 edges

3.746 ms 1.00x

rust

1.779 ms 2.11x

wasm

2.982 ms 1.26x

java

3.711 ms 1.01x

dotnet

2.611 ms 1.43x

hierarchy/10002000 tasks · 0 edges

60.589 ms 1.00x

rust

27.803 ms 2.18x

wasm

29.858 ms 2.03x

java

56.565 ms 1.07x

dotnet

34.139 ms 1.77x

calendar-day/10002000 tasks · 0 edges

118.271 ms 1.00x

rust

14.736 ms 8.03x

wasm

32.542 ms 3.63x

java

69.778 ms 1.69x

dotnet

56.960 ms 2.08x

calendar-hour/10002000 tasks · 0 edges

13.456 ms 1.00x

rust

19.814 ms 0.68x

wasm

17.721 ms 0.76x

java

23.496 ms 0.57x

dotnet

43.112 ms 0.31x

cycle-tail/10001000 tasks · 0 edges

4.713 ms 1.00x

rust

1.441 ms 3.27x

wasm

1.932 ms 2.44x

java

3.540 ms 1.33x

dotnet

2.820 ms 1.67x

cycle-tail/50005000 tasks · 0 edges

76.686 ms 1.00x

rust

20.906 ms 3.67x

wasm

24.911 ms 3.08x

java

74.357 ms 1.03x

dotnet

42.710 ms 1.80x

summary-external-successor4 tasks · 2 edges

0.054 ms 1.00x

rust

0.009 ms 6.21x

wasm

0.016 ms 3.45x

java

0.017 ms 3.21x

dotnet

0.015 ms 3.70x

leveling/10001000 tasks · 0 edges · 1000 assignments

11.060 ms 1.00x

rust

3.865 ms 2.86x

wasm

6.039 ms 1.83x

java

12.834 ms 0.86x

dotnet

8.175 ms 1.35x

leveling/1000010000 tasks · 0 edges · 10000 assignments

92.310 ms 1.00x

rust

38.526 ms 2.40x

wasm

50.662 ms 1.82x

java

108.462 ms 0.85x

dotnet

97.243 ms 0.95x

leveling-batches/50005000 tasks · 9990 edges · 7500 assignments · 4 batches

108.428 ms 1.00x

rust

52.654 ms 2.06x

wasm

72.772 ms 1.49x

java

150.289 ms 0.72x

dotnet

132.156 ms 0.82x

leveling-calendars/50005000 tasks · 9990 edges · 7500 assignments · 4 batches

276.306 ms 1.00x

rust

80.010 ms 3.45x

wasm

103.884 ms 2.66x

java

223.692 ms 1.24x

dotnet

193.020 ms 1.43x

evaluate-schedule/10001000 tasks · 0 edges · 1000 assignments

12.524 ms 1.00x

rust

7.946 ms 1.58x

wasm

9.019 ms 1.39x

java

16.981 ms 0.74x

dotnet

11.753 ms 1.07x

evaluate/10001000 tasks · 0 edges · 1000 assignments

55.867 ms 1.00x

rust

25.760 ms 2.17x

wasm

30.103 ms 1.86x

java

59.476 ms 0.94x

dotnet

52.463 ms 1.06x

evaluate-schedule/50005000 tasks · 0 edges · 5000 assignments

60.070 ms 1.00x

rust

38.663 ms 1.55x

wasm

43.973 ms 1.37x

java

62.765 ms 0.96x

dotnet

62.779 ms 0.96x

evaluate/50005000 tasks · 0 edges · 5000 assignments

308.337 ms 1.00x

rust

150.356 ms 2.05x

wasm

174.178 ms 1.77x

java

327.437 ms 0.94x

dotnet

307.804 ms 1.00x

assign/10001000 tasks · 0 edges

163.887 ms 1.00x

rust

162.434 ms 1.01x

wasm

190.388 ms 0.86x

java

157.197 ms 1.04x

dotnet

186.736 ms 0.88x

assign/50005000 tasks · 0 edges

930.772 ms 1.00x

rust

810.703 ms 1.15x

wasm

936.562 ms 0.99x

java

885.686 ms 1.05x

dotnet

1066.325 ms 0.87x

evaluate-chains/375378 tasks · 0 edges · 594 assignments

460.224 ms 1.00x

rust

327.702 ms 1.40x

wasm

361.419 ms 1.27x

java

679.285 ms 0.68x

dotnet

569.214 ms 0.81x

evaluate-chains/375+skip378 tasks · 0 edges · 594 assignments

205.242 ms 1.00x

rust

139.880 ms 1.47x

wasm

157.591 ms 1.30x

java

281.189 ms 0.73x

dotnet

245.128 ms 0.84x

workload	jsplen	rustplen	wasmplen	javaplen	dotnetplen
chain/1000	1.00x	2.41x	1.61x	1.00x	2.14x
wide/1000	1.00x	1.91x	1.14x	0.84x	1.49x
islands/1000	1.00x	1.96x	1.15x	1.01x	1.51x
wide/5000	1.00x	1.93x	1.03x	1.20x	1.41x
islands/5000	1.00x	1.79x	1.09x	1.35x	1.31x
chain/10000	1.00x	1.73x	1.06x	1.53x	1.33x
backward-flat/1000	1.00x	1.89x	1.06x	1.32x	1.32x
backward-calendar/1000	1.00x	1.69x	1.07x	1.10x	1.11x
backward-flat/5000	1.00x	1.65x	1.02x	1.51x	1.30x
backward-calendar/5000	1.00x	1.49x	1.00x	1.30x	1.28x
summary-expand/1000	1.00x	4.66x	3.95x	1.54x	2.83x
summary-shape/1000	1.00x	4.30x	3.49x	2.19x	2.96x
summary-block/1000	1.00x	2.11x	1.26x	1.01x	1.43x
hierarchy/1000	1.00x	2.18x	2.03x	1.07x	1.77x
calendar-day/1000	1.00x	8.03x	3.63x	1.69x	2.08x
calendar-hour/1000	1.00x	0.68x	0.76x	0.57x	0.31x
cycle-tail/1000	1.00x	3.27x	2.44x	1.33x	1.67x
cycle-tail/5000	1.00x	3.67x	3.08x	1.03x	1.80x
summary-external-successor	1.00x	6.21x	3.45x	3.21x	3.70x
leveling/1000	1.00x	2.86x	1.83x	0.86x	1.35x
leveling/10000	1.00x	2.40x	1.82x	0.85x	0.95x
leveling-batches/5000	1.00x	2.06x	1.49x	0.72x	0.82x
leveling-calendars/5000	1.00x	3.45x	2.66x	1.24x	1.43x
evaluate-schedule/1000	1.00x	1.58x	1.39x	0.74x	1.07x
evaluate/1000	1.00x	2.17x	1.86x	0.94x	1.06x
evaluate-schedule/5000	1.00x	1.55x	1.37x	0.96x	0.96x
evaluate/5000	1.00x	2.05x	1.77x	0.94x	1.00x
assign/1000	1.00x	1.01x	0.86x	1.04x	0.88x
assign/5000	1.00x	1.15x	0.99x	1.05x	0.87x
evaluate-chains/375	1.00x	1.40x	1.27x	0.68x	0.81x
evaluate-chains/375+skip	1.00x	1.47x	1.30x	0.73x	0.84x

slower ← 1.00x → faster

Multi-threaded

Rows on native worker threads; JS and WASM have none. Not part of any total, tile or the heatmap above.

evaluate-parallel/50005000 tasks · 0 edges · 5000 assignments

not measured

—

rust

31.979 ms 1.00x

wasm

not measured

—

java

61.567 ms 0.52x

dotnet

149.469 ms 0.21x

Operations

Edit latency in milliseconds on a small dependency island inside a large project. vs base compares a row's summed metrics against the first report that measured the operation, over the metrics both recorded.

gesture/10001000 tasks · 10-task island

report	apply_plan	scoped_plan	preview	stateless	vs base
js	0.3774	0.2987	0.5796	—	1.0x
rust	0.0709	0.0499	0.1307	—	5.0x
wasm	0.1138	—	0.1790	0.6944	3.3x
java	0.2896	0.3279	0.3749	—	1.3x
dotnet	0.1237	0.0920	0.2135	—	2.9x

gesture/1000010000 tasks · 10-task island

report	apply_plan	scoped_plan	preview	stateless	vs base
js	2.7245	2.7550	4.2915	—	1.0x
rust	0.6951	0.4992	1.2982	—	3.9x
wasm	1.0622	—	1.7006	6.9568	2.5x
java	2.4342	2.1377	2.9897	—	1.3x
dotnet	1.3788	1.1145	2.6083	—	1.9x