Simple benchmarks of wasmtime (JIT) vs native.
You need wasm32-wasi target installed and you need to have wasmtime in your PATH.
Run
rustup target add wasm32-wasi
to install wasm32-wasi target.
In order to get the latest precompiled wasmtime binary for your platform, head over to
this link.
Afterwards, to build and run the benchmarks
cargo run --release -- --n 100
where --n is the number of repetitions.
All samples are in their source format in samples/ directory. If you add a new sample,
make sure you run cargo clean before rebuilding/rerunning again.
All results are after re-running each binary 100 times. For wasmtime, we invoke the binary
with --disable-cache and -O flags.
A note of caution, in all presented results, the dispersion is expressed in terms of the standard deviation which is probably not accurate but should give at least an idea of how wildly the values differed between each other.
Source file: samples/fib_func.rs
| Native | 1004.88 +/- 4.03 ms |
| Wasmtime | 1976.96 +/- 8.83 ms |
Source file: samples/fib_loop.rs
| Native | 0.44 +/- 0.03 ms |
| Wasmtime | 13.88 +/- 0.62 ms |
Adapted from The Computer Language Benchmarks Game.
Source file: samples/mandelbrot.rs
| Native | 5891.91 +/- 14.53 ms |
| Wasmtime | 9217.38 +/- 28.94 ms |