Programming Language and compiler
Benchmarks

Swift VS Wasm benchmarks

Current benchmark data was generated on Tue Mar 25 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 5.rs 1828ms 60ms 33.1MB 1810ms 10ms wasmtime 31.0.0
wasm 4.rs 1855ms 21ms 33.1MB 1833ms 10ms wasmtime 31.0.0
wasm 3.rs 1870ms 21ms 49.2MB 1847ms 10ms wasmtime 31.0.0
swift 1.swift 2950ms 76ms 53.9MB 2917ms 20ms swift 6.0.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 5.rs 171ms 2.0ms 19.2MB 160ms 0ms wasmtime 31.0.0
wasm 4.rs 179ms 1.6ms 19.2MB 167ms 0ms wasmtime 31.0.0
wasm 3.rs 187ms 5.5ms 21.1MB 167ms 0ms wasmtime 31.0.0
swift 1.swift 237ms 1.1ms 11.9MB 227ms 0ms swift 6.0.3

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2483ms 17ms 5.6MB 2473ms 0ms swift 6.0.3
wasm 1.rs 4291ms 13ms 16.7MB 4277ms 0ms wasmtime 31.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 214ms 1.8ms 6.3MB 207ms 0ms swift 6.0.3
wasm 1.rs 357ms 0.8ms 16.8MB 343ms 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 135ms 1.1ms 20.9MB 387ms 0ms swift 6.0.3
wasm 1.rs 238ms 2.4ms 17.2MB 223ms 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 0.6ms 17.2MB 20ms 0ms wasmtime 31.0.0
swift 3.swift 36ms 0.3ms 18.3MB 30ms 0ms swift 6.0.3

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.5ms 0.2ms 5.9MB 0ms 0ms swift 6.0.3
wasm 1.rs 7.0ms 0.7ms 17.4MB 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 1390ms 6.6ms 74.5MB 5083ms 30ms swift 6.0.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 2-m.swift 263ms 1.7ms 60.0MB 693ms 23ms swift 6.0.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 345ms 1.2ms 9.8MB 340ms 0ms swift 6.0.3
wasm 1.rs 411ms 4.6ms 17.1MB 400ms 0ms wasmtime 31.0.0
wasm 2.rs 583ms 2.7ms 17.0MB 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 40ms 0.2ms 9.8MB 30ms 0ms swift 6.0.3
wasm 1.rs 49ms 0.3ms 17.2MB 37ms 0ms wasmtime 31.0.0
wasm 2.rs 66ms 0.5ms 17.0MB 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 2227ms 21ms 18.3MB 2210ms 0ms wasmtime 31.0.0
swift 1.swift timeout 0.0ms 7.1MB 4910ms 70ms swift 6.0.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 520ms 1.0ms 17.3MB 507ms 0ms wasmtime 31.0.0
swift 1.swift 1877ms 8.7ms 7.0MB 1863ms 0ms swift 6.0.3