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README.md

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. update benchmarks graph build benchmarks graph

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)