Programming Language and compiler
Benchmarks

Wasm VS Python benchmarks

Current benchmark data was generated on Thu May 01 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
python 1.py 1163ms 3.7ms 96.4MB 1093ms 57ms pypy 3.10.16
wasm 5.rs 1774ms 4.7ms 33.7MB 1757ms 7ms wasmtime 32.0.0
wasm 3.rs 1818ms 20ms 49.7MB 1790ms 13ms wasmtime 32.0.0
wasm 4.rs 1821ms 4.3ms 33.8MB 1803ms 7ms wasmtime 32.0.0
python 1.py timeout 0.0ms 41.0MB 4967ms 20ms cpython 3.13.3
python 1.py timeout 0.0ms 40.6MB 4747ms 240ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 94ms 1.4ms 68.9MB 67ms 20ms pypy 3.10.16
wasm 5.rs 170ms 2.0ms 19.7MB 160ms 0ms wasmtime 32.0.0
wasm 4.rs 177ms 2.1ms 19.7MB 163ms 0ms wasmtime 32.0.0
wasm 3.rs 180ms 5.3ms 21.7MB 163ms 0ms wasmtime 32.0.0
python 1.py 477ms 5.2ms 11.9MB 453ms 10ms pyston 3.8.12
python 1.py 735ms 1.9ms 12.9MB 720ms 0ms cpython 3.13.3

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 1138ms 15ms 20.2MB 1123ms 0ms wasmtime 32.0.0
python 1.py 1189ms 5.0ms 104.1MB 1140ms 33ms pypy 3.10.16
python 1.py 2813ms 42ms 25.2MB 2797ms 7ms cpython 3.13.3
python 1.py timeout 0.0ms 17.3MB 4980ms 7ms pyston 3.8.12

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 3.rs 82ms 1.1ms 20.2MB 70ms 0ms wasmtime 32.0.0
python 1.py 219ms 1.1ms 84.8MB 180ms 20ms pypy 3.10.16
python 1.py 232ms 1.3ms 20.5MB 210ms 0ms cpython 3.13.3
python 1.py 689ms 14ms 16.8MB 670ms 3ms pyston 3.8.12

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 254ms 1.8ms 83.3MB 213ms 27ms pypy 3.10.16
python 1.py 358ms 0.5ms 12.7MB 343ms 0ms cpython 3.13.3
wasm 1.rs 421ms 3.5ms 19.4MB 407ms 0ms wasmtime 32.0.0
python 1.py 2007ms 3.8ms 9.6MB 1993ms 0ms pyston 3.8.12

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 101ms 2.1ms 63.4MB 77ms 13ms pypy 3.10.16
python 1.py 110ms 2.3ms 11.6MB 97ms 0ms cpython 3.13.3
wasm 1.rs 115ms 2.5ms 18.8MB 100ms 0ms wasmtime 32.0.0
python 1.py 347ms 0.6ms 8.8MB 340ms 0ms pyston 3.8.12

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 4121ms 1.0ms 17.3MB 4110ms 0ms wasmtime 32.0.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 345ms 2.7ms 17.3MB 333ms 0ms wasmtime 32.0.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 236ms 2.0ms 17.9MB 223ms 0ms wasmtime 32.0.0
python 1.py 1844ms 2.1ms 88.9MB 1803ms 27ms pypy 3.10.16
python 5-m.py 2282ms 26ms 65.6MB 3447ms 880ms pypy 3.10.16
python 5-m.py 2440ms 42ms 12.5MB 3553ms 983ms pyston 3.8.12
python 1.py 3029ms 17ms 8.1MB 3013ms 0ms pyston 3.8.12
python 5-m.py 3360ms 25ms 13.8MB 4480ms 893ms cpython 3.13.3
python 1.py 4658ms 29ms 8.9MB 4647ms 0ms cpython 3.13.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 31ms 1.2ms 17.8MB 20ms 0ms wasmtime 32.0.0
python 1.py 248ms 3.6ms 63.3MB 217ms 13ms pypy 3.10.16
python 5-m.py 310ms 2.9ms 12.5MB 413ms 133ms pyston 3.8.12
python 1.py 316ms 5.2ms 8.1MB 303ms 0ms pyston 3.8.12
python 5-m.py 405ms 7.8ms 13.9MB 507ms 127ms cpython 3.13.3
python 5-m.py 437ms 3.3ms 65.4MB 743ms 283ms pypy 3.10.16
python 1.py 475ms 3.8ms 8.8MB 463ms 0ms cpython 3.13.3

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 6.4ms 0.3ms 16.1MB 0ms 0ms wasmtime 32.0.0
python 1.py 12ms 0.6ms 7.6MB 0ms 0ms pyston 3.8.12
python 1.py 14ms 1.0ms 8.6MB 10ms 0ms cpython 3.13.3
python 1.py 29ms 1.3ms 51.6MB 10ms 10ms pypy 3.10.16

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 87ms 2.0ms 17.8MB 77ms 0ms wasmtime 32.0.0
python 2.py 146ms 2.0ms 58.3MB 120ms 10ms pypy 3.10.16
python 1.py 182ms 1.5ms 59.4MB 157ms 13ms pypy 3.10.16
python 1.py 719ms 4.1ms 8.9MB 707ms 0ms pyston 3.8.12
python 2.py 846ms 13ms 8.5MB 833ms 0ms pyston 3.8.12
python 1.py 1151ms 14ms 9.5MB 1137ms 0ms cpython 3.13.3
python 2.py 1319ms 13ms 9.1MB 1307ms 0ms cpython 3.13.3

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 246ms 2.8ms 17.5MB 233ms 0ms wasmtime 32.0.0
python 2.py 338ms 2.2ms 59.3MB 313ms 10ms pypy 3.10.16
python 1.py 385ms 11ms 60.3MB 360ms 13ms pypy 3.10.16
python 1.py 2132ms 15ms 8.9MB 2120ms 0ms pyston 3.8.12
python 2.py 2534ms 37ms 8.5MB 2523ms 0ms pyston 3.8.12
python 1.py 3411ms 66ms 9.5MB 3397ms 0ms cpython 3.13.3
python 2.py 3945ms 23ms 9.1MB 3933ms 0ms cpython 3.13.3

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 46ms 0.8ms 17.7MB 33ms 0ms wasmtime 32.0.0
python 2.py 105ms 0.6ms 58.1MB 80ms 10ms pypy 3.10.16
python 1.py 121ms 3.1ms 58.8MB 97ms 10ms pypy 3.10.16
python 1.py 345ms 3.5ms 8.5MB 330ms 0ms pyston 3.8.12
python 2.py 387ms 4.3ms 8.1MB 373ms 0ms pyston 3.8.12
python 1.py 543ms 3.8ms 9.3MB 533ms 0ms cpython 3.13.3
python 2.py 634ms 7.0ms 8.8MB 620ms 0ms cpython 3.13.3

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 822ms 2.9ms 20.8MB 807ms 0ms wasmtime 32.0.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 8.rs 42ms 0.8ms 17.9MB 30ms 0ms wasmtime 32.0.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 885ms 0.7ms 43.7MB 860ms 10ms wasmtime 32.0.0
python 1.py 2205ms 15ms 202.6MB 2087ms 107ms pypy 3.10.16
python 1.py timeout 0.0ms 93.9MB 4953ms 37ms cpython 3.13.3
python 1.py timeout 0.0ms 130.3MB 4937ms 50ms pyston 3.8.12

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 197ms 2.7ms 23.7MB 183ms 0ms wasmtime 32.0.0
python 1.py 374ms 1.8ms 105.3MB 317ms 40ms pypy 3.10.16
python 1.py 2897ms 36ms 37.3MB 2873ms 10ms cpython 3.13.3
python 1.py timeout 0.0ms 48.9MB 4940ms 50ms pyston 3.8.12

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 404ms 2.4ms 17.8MB 393ms 0ms wasmtime 32.0.0
wasm 2.rs 563ms 3.0ms 17.9MB 550ms 0ms wasmtime 32.0.0
python 2.py 1359ms 3.9ms 58.1MB 1333ms 10ms pypy 3.10.16
python 1.py 2652ms 15ms 57.1MB 2627ms 13ms pypy 3.10.16
python 1.py timeout 0.0ms 8.8MB 4990ms 0ms cpython 3.13.3
python 2.py timeout 0.0ms 8.9MB 4990ms 0ms cpython 3.13.3
python 1.py timeout 0.0ms 8.3MB 4990ms 0ms pyston 3.8.12
python 2.py timeout 0.0ms 8.1MB 4990ms 0ms pyston 3.8.12

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 48ms 1.3ms 19.8MB 40ms 0ms wasmtime 32.0.0
wasm 2.rs 63ms 0.2ms 17.9MB 50ms 0ms wasmtime 32.0.0
python 2.py 180ms 3.6ms 57.9MB 153ms 10ms pypy 3.10.16
python 1.py 303ms 3.1ms 57.2MB 280ms 10ms pypy 3.10.16
python 1.py 926ms 7.5ms 8.3MB 910ms 0ms pyston 3.8.12
python 2.py 1300ms 5.2ms 8.3MB 1293ms 0ms pyston 3.8.12
python 1.py 2952ms 2.0ms 8.9MB 2940ms 0ms cpython 3.13.3
python 2.py 3262ms 188ms 8.9MB 3250ms 0ms cpython 3.13.3

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 367ms 10ms 22.7MB 353ms 0ms wasmtime 32.0.0
wasm 1.rs 458ms 4.0ms 56.9MB 443ms 0ms wasmtime 32.0.0
python 1.py 2568ms 13ms 369.6MB 2497ms 60ms pypy 3.10.16
python 2.py 3071ms 131ms 633.0MB 2887ms 167ms pyston 3.8.12
python 1.py 4763ms 47ms 320.4MB 4703ms 50ms pyston 3.8.12
python 1.py timeout 0.0ms 321.3MB 4960ms 20ms cpython 3.13.3
python 2.py timeout 0.0ms 633.7MB 4823ms 163ms cpython 3.13.3
python 2.py timeout 0.0ms 959.9MB 4720ms 267ms pypy 3.10.16

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 1.rs 90ms 0.5ms 27.6MB 80ms 0ms wasmtime 32.0.0
wasm 2.rs 95ms 0.6ms 18.9MB 83ms 0ms wasmtime 32.0.0
python 1.py 533ms 4.7ms 135.3MB 493ms 23ms pypy 3.10.16
python 2.py 719ms 1.6ms 164.2MB 673ms 30ms pyston 3.8.12
python 1.py 1046ms 3.4ms 86.1MB 1020ms 10ms pyston 3.8.12
python 2.py 1404ms 6.2ms 165.0MB 1367ms 27ms cpython 3.13.3
python 2.py 1537ms 17ms 290.2MB 1447ms 77ms pypy 3.10.16
python 1.py 2673ms 5.0ms 86.9MB 2650ms 10ms cpython 3.13.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 1915ms 12ms 8.9MB 1873ms 27ms pyston 3.8.12
python 4.py 1986ms 7.7ms 9.4MB 1933ms 40ms cpython 3.13.3
python 4.py 2182ms 4.7ms 89.6MB 2143ms 27ms pypy 3.10.16
wasm 2.rs 2190ms 4.4ms 19.1MB 2173ms 0ms wasmtime 32.0.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 4.py 451ms 2.1ms 8.6MB 440ms 0ms pyston 3.8.12
python 4.py 470ms 1.0ms 9.1MB 460ms 0ms cpython 3.13.3
wasm 2.rs 519ms 3.4ms 18.1MB 507ms 0ms wasmtime 32.0.0
python 4.py 550ms 2.6ms 83.9MB 520ms 20ms pypy 3.10.16

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 3153ms 7.0ms 8.3MB 3143ms 0ms pyston 3.8.12
python 1.py 3535ms 16ms 74.4MB 3503ms 20ms pypy 3.10.16
wasm 1.rs 3581ms 22ms 17.6MB 3567ms 0ms wasmtime 32.0.0
python 1.py 3806ms 27ms 8.8MB 3797ms 0ms cpython 3.13.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
python 1.py 802ms 6.6ms 8.3MB 793ms 0ms pyston 3.8.12
wasm 1.rs 907ms 5.9ms 17.6MB 897ms 0ms wasmtime 32.0.0
python 1.py 961ms 3.4ms 8.8MB 947ms 0ms cpython 3.13.3
python 1.py 988ms 8.0ms 67.4MB 957ms 20ms pypy 3.10.16

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 3694ms 3.7ms 17.6MB 3683ms 0ms wasmtime 32.0.0
wasm 7.rs 4898ms 2.5ms 18.1MB 4883ms 0ms wasmtime 32.0.0
python 8.py timeout 0.0ms 14.9MB 40ms 7ms cpython 3.13.3
python 8.py timeout 0.0ms 95.8MB 763ms 77ms pypy 3.10.16
python 8.py timeout 0.0ms 14.1MB 30ms 10ms pyston 3.8.12

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 934ms 2.7ms 17.7MB 920ms 0ms wasmtime 32.0.0
wasm 7.rs 1229ms 0.8ms 19.5MB 1217ms 0ms wasmtime 32.0.0
python 8.py timeout 0.0ms 14.5MB 43ms 10ms cpython 3.13.3
python 8.py timeout 0.0ms 96.4MB 1267ms 177ms pypy 3.10.16
python 8.py timeout 0.0ms 13.7MB 53ms 17ms pyston 3.8.12

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
wasm 2.rs 239ms 1.7ms 17.4MB 223ms 0ms wasmtime 32.0.0
wasm 7.rs 315ms 1.9ms 18.2MB 300ms 0ms wasmtime 32.0.0
python 8-m.py 1935ms 16ms 93.6MB 6317ms 250ms pypy 3.10.16
python 8.py timeout 0.0ms 14.3MB 83ms 17ms cpython 3.13.3
python 8.py timeout 0.0ms 13.1MB 137ms 30ms pyston 3.8.12