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# Objective We currently have no benchmarks for large worlds with many entities, components and systems. Having a benchmark for a world with many components is especially useful for the performance improvements needed for relations. This is also a response to this [comment from cart](https://github.com/bevyengine/bevy/pull/14385#issuecomment-2311292546). > I'd like both a small bevy_ecs-scoped executor benchmark that generates thousands of components used by hundreds of systems. ## Solution I use dynamic components and components to construct a benchmark with 2000 components, 4000 systems, and 10000 entities. ## Some notes - ~I use a lot of random entities, which creates unpredictable performance, I should use a seeded PRNG.~ - Not entirely sure if everything is ran concurrently currently. And there are many conflicts, meaning there's probably a lot of first-come-first-serve going on. Not entirely sure if these benchmarks are very reproducible. - Maybe add some more safety comments - Also component_reads_and_writes() is about to be deprecated #16339, but there's no other way to currently do what I'm trying to do. --------- Co-authored-by: Chris Russell <8494645+chescock@users.noreply.github.com> Co-authored-by: BD103 <59022059+BD103@users.noreply.github.com> |
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| .. | ||
| bevymark.rs | ||
| many_animated_sprites.rs | ||
| many_buttons.rs | ||
| many_cameras_lights.rs | ||
| many_components.rs | ||
| many_cubes.rs | ||
| many_foxes.rs | ||
| many_gizmos.rs | ||
| many_glyphs.rs | ||
| many_lights.rs | ||
| many_sprites.rs | ||
| README.md | ||
| text_pipeline.rs | ||
| transform_hierarchy.rs | ||
| warning_string.txt | ||
Stress tests
These examples are used to stress test Bevy's performance in various ways. These should be run with the "stress-test" profile to accurately represent performance in production, otherwise they will run in cargo's default "dev" profile which is very slow.
Example Command
cargo run --profile stress-test --example <EXAMPLE>