Benchmarks of various Rust Entity Component Systems

Notes:

• if a bench is written in the idiomatic way for an ECS, please let me know
• there will be more benches added soon
• the old parallel benches have been removed for now
• some older ECS that have not seen maintenance in over 3+ years are removed

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
legion	538 µs/iter (+/- 83)	1 µs/iter (+/- 0)
tiny_ecs	290 µs/iter (+/- 9)	10 µs/iter (+/- 0)
hecs	375 µs/iter (+/- 34)	4 µs/iter (+/- 0)
specs	319 µs/iter (+/- 27)	3 µs/iter (+/- 0)
froggy	307 µs/iter (+/- 10)	9 µs/iter (+/- 0)
constellation	226 µs/iter (+/- 29)	6 µs/iter (+/- 0)

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

Notes

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