brendanzab / ecs_bench

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.

Benchmark	ecs	specs	recs	trex	calx-ecs	froggy
pos_vel build	1,345,684 ns/iter (+/- 16,052)	353,256 ns/iter (+/- 126,738)	13,631,518 ns/iter (+/- 2,166,517)	918,333 ns/iter (+/- 14,290)	303,328 ns/iter (+/- 9,159)	949,397 ns/iter (+/- 44,143)
pos_vel update	369,159 ns/iter (+/- 8,816)	94,785 ns/iter (+/- 15,303)	3,116,631 ns/iter (+/- 160,402)	225,451 ns/iter (+/- 57,390)	18,343 ns/iter (+/- 166)	15,996 ns/iter (+/- 190)
parallel build	1,399,331 ns/iter (+/- 86,013)	454,021 ns/iter (+/- 153,839)	16,956,679 ns/iter (+/- 1,562,317)	1,728,446 ns/iter (+/- 118,019)	446,644 ns/iter (+/- 129,865)	2,073,316 ns/iter (+/- 16,963)
parallel update	4,890,021 ns/iter (+/- 71,049)	123,434 ns/iter (+/- 18,972)	6,049,701 ns/iter (+/- 916,957)	487,189 ns/iter (+/- 16,152)	82,541 ns/iter (+/- 1,641)	136,294 ns/iter (+/- 38,945)

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)