Programming Language and compiler
Benchmarks

Swift VS Wasm benchmarks

Current benchmark data was generated on Mon Apr 14 2025, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][4 cores] AMD EPYC 7763 64-Core Processor (Model 1)

* -m in a file name stands for multi-threading or multi-processing

* -i in a file name stands for direct intrinsics usage. (Usage of simd intrinsics via libraries is not counted)

* -ffi in a file name stands for non-stdlib FFI usage

* (You may find time < time(user) + time(sys) for some non-parallelized programs, the overhead is from GC or JIT compiler, which are allowed to take advantage of multi-cores as that's more close to real-world scenarios.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 4.rs 1823ms 9.8ms 33.2MB 1800ms 10ms wasmtime 31.0.0
wasm 3.rs 1857ms 49ms 49.2MB 1830ms 17ms wasmtime 31.0.0
wasm 5.rs 1918ms 279ms 33.1MB 1893ms 7ms wasmtime 31.0.0
swift 1.swift 2675ms 16ms 53.8MB 2643ms 20ms swift 6.1.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 5.rs 169ms 0.6ms 19.2MB 160ms 0ms wasmtime 31.0.0
wasm 3.rs 181ms 4.3ms 21.2MB 167ms 0ms wasmtime 31.0.0
wasm 4.rs 192ms 31ms 19.1MB 180ms 0ms wasmtime 31.0.0
swift 1.swift 239ms 3.9ms 11.8MB 227ms 0ms swift 6.1.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2491ms 11ms 5.5MB 2480ms 0ms swift 6.1.0
wasm 1.rs 4206ms 2.3ms 16.7MB 4190ms 0ms wasmtime 31.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 213ms 3.7ms 6.3MB 203ms 0ms swift 6.1.0
wasm 1.rs 355ms 3.1ms 16.8MB 340ms 0ms wasmtime 31.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3-m.swift 146ms 0.8ms 20.8MB 433ms 0ms swift 6.1.0
wasm 1.rs 236ms 2.4ms 17.2MB 220ms 3ms wasmtime 31.0.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 32ms 0.4ms 17.4MB 20ms 0ms wasmtime 31.0.0
swift 3.swift 38ms 0.4ms 18.2MB 37ms 0ms swift 6.1.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.3ms 0.2ms 5.8MB 0ms 0ms swift 6.1.0
wasm 1.rs 6.6ms 0.4ms 17.3MB 0ms 0ms wasmtime 31.0.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 2-m.swift 1336ms 17ms 70.7MB 4880ms 30ms swift 6.1.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 2-m.swift 248ms 2.1ms 60.0MB 663ms 23ms swift 6.1.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 344ms 2.0ms 10.0MB 330ms 0ms swift 6.1.0
wasm 1.rs 400ms 1.5ms 17.1MB 390ms 0ms wasmtime 31.0.0
wasm 2.rs 582ms 0.4ms 17.2MB 570ms 0ms wasmtime 31.0.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 39ms 0.2ms 10.0MB 30ms 0ms swift 6.1.0
wasm 1.rs 48ms 0.4ms 17.0MB 40ms 0ms wasmtime 31.0.0
wasm 2.rs 65ms 0.1ms 17.1MB 53ms 0ms wasmtime 31.0.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 2163ms 8.9ms 18.1MB 2150ms 0ms wasmtime 31.0.0
swift 1.swift timeout 0.0ms 7.1MB 4937ms 50ms swift 6.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 517ms 2.5ms 17.3MB 507ms 0ms wasmtime 31.0.0
swift 1.swift 1928ms 4.2ms 7.0MB 1913ms 0ms swift 6.1.0