Benchmarks of various Rust Entity Component Systems

Benchmarks

Benchmarks are run on Travis CI.

Benchmarks are located in benches/[bench_name]_[ecs_crate_name].rs.

Library	pos_vel build	pos_vel update	parallel build	parallel update
calx-ecs	228 µs/iter (+/- 7)	18 µs/iter (+/- 0)	385 µs/iter (+/- 18)	76 µs/iter (+/- 1)
constellation	280 µs/iter (+/- 8)	8 µs/iter (+/- 0)	455 µs/iter (+/- 6)	152 µs/iter (+/- 13)
ecs	1,452 µs/iter (+/- 39)	324 µs/iter (+/- 29)	1,380 µs/iter (+/- 29)	3,644 µs/iter (+/- 74)
froggy	589 µs/iter (+/- 10)	8 µs/iter (+/- 0)	1,429 µs/iter (+/- 65)	73 µs/iter (+/- 2)
specs	261 µs/iter (+/- 7)	3 µs/iter (+/- 0)	675 µs/iter (+/- 88)	87 µs/iter (+/- 1)
trex	1,094 µs/iter (+/- 81)	179 µs/iter (+/- 2)	1,637 µs/iter (+/- 172)	379 µs/iter (+/- 11)

Visualization of benchmarks, smaller is better.

pos_vel

• 1000 entities with position and velocity components
• 9000 entities with position components only
• stub render system
• physics system: position += velocity

parallel

• 10000 entities with 3 simple components R, W1 and W2
• w1 system reads R and writes to W1
• w2 system reads R and writes to W2
• systems could be run in parallel

Notes

• the benchmarks explore a limited subset of ECS use-cases and do not necessarily reflect the peformance of large-scale applications
• froggy is technically not an ECS, but a Component Graph System (CGS)