All benchmarks on a 2010 MacPro5,1 with an E5620 @ 2.40GHz in it. To reproduce
run yarn && yarn start -p and switch to your browser.
json refers to using the
serde-serialize
feature of wasm-bindgen, which uses serde_json under the hood. serde_wb
refers to
serde-wasm-bindgen. Refer
to src/lib.rs.
We're essentially trying to pass a 100-item array of this struct from
JavaScript to Rust, where T is String or alternatively u32,
struct Struct<T> {
value: T
}Last updated 20 September 2020
| Benchmark | Time |
|---|---|
| strings_json | 157 ms [1.57 ms / iter] |
| strings_serde_wb | 142 ms [1.42 ms / iter] |
| strings_serde_wb_complete | 204 ms [2.04 ms / iter] |
| numbers_json | 117 ms [1.17 ms / iter] |
| numbers_serde_wb | 124 ms [1.24 ms / iter] |
| numbers_serde_wb_complete | 167 ms [1.67 ms / iter] |
| Benchmark | Time |
|---|---|
| strings_json | 182.9 ms [1.829 ms / iter] |
| strings_serde_wb | 100.93 ms [1.0093 ms / iter] |
| strings_serde_wb_complete | 118.19 ms [1.1819 ms / iter] |
| numbers_json | 137.795 ms [1.37795 ms / iter] |
| numbers_serde_wb | 72.36 ms [0.7236 ms / iter] |
| numbers_serde_wb_complete | 83.715 ms [0.83715 ms / iter] |
| Benchmark | Time |
|---|---|
| strings_json | 204 ms [2.04 ms / iter] |
| strings_serde_wb | 66 ms [0.66 ms / iter] |
| strings_serde_wb_complete | 85 ms [0.85 ms / iter] |
| numbers_json | 144 ms [1.44 ms / iter] |
| numbers_serde_wb | 52 ms [0.52 ms / iter] |
| numbers_serde_wb_complete | 66 ms [0.66 ms / iter] |
Editor's note: whoa. WebKit's doing some low-overhead JS<->Wasm calls.