Programming Language and compiler
Benchmarks

Javascript VS Swift 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
javascript 1-m.js 1036ms 29ms 187.6MB 1633ms 273ms bun 1.2.9
javascript 1-m.js 1296ms 2.8ms 272.7MB 2237ms 170ms node 23.11.0
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
javascript 1.js 102ms 0.7ms 79.0MB 77ms 30ms bun 1.2.9
javascript 1.js 130ms 3.3ms 78.4MB 137ms 23ms node 23.11.0
swift 1.swift 239ms 3.9ms 11.8MB 227ms 0ms swift 6.1.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1638ms 3.3ms 89.9MB 1727ms 60ms node 23.11.0
javascript 1.js 2497ms 24ms 101.7MB 2517ms 73ms bun 1.2.9

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 160ms 0.1ms 72.0MB 147ms 23ms node 23.11.0
javascript 1.js 201ms 1.0ms 86.8MB 220ms 40ms bun 1.2.9

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 282ms 4.5ms 62.6MB 303ms 20ms node 23.11.0
javascript 1.js 537ms 11ms 77.3MB 513ms 23ms bun 1.2.9

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 130ms 1.2ms 61.4MB 150ms 20ms node 23.11.0
javascript 1.js 504ms 0.5ms 67.4MB 480ms 17ms bun 1.2.9

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
javascript 1.js 13ms 0.4ms 33.3MB 0ms 0ms bun 1.2.9
javascript 1.js 33ms 1.0ms 47.8MB 18ms 4ms node 23.11.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 354ms 14ms 77.7MB 163ms 447ms bun 1.2.9
javascript 1.js 3078ms 160ms 183.3MB 3010ms 1423ms node 23.11.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 106ms 6.8ms 55.5MB 40ms 100ms bun 1.2.9
javascript 1.js 376ms 5.1ms 79.2MB 353ms 140ms node 23.11.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 80ms 6.4ms 68.8MB 53ms 20ms bun 1.2.9
javascript 1.js 125ms 0.8ms 75.8MB 110ms 20ms node 23.11.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 390ms 3.3ms 236.7MB 333ms 103ms bun 1.2.9
javascript 1.js 730ms 6.0ms 204.3MB 810ms 93ms node 23.11.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 2.js 312ms 0.7ms 62.9MB 300ms 13ms node 23.11.0
javascript 1.js 568ms 2.8ms 60.7MB 553ms 13ms node 23.11.0
javascript 2.js 664ms 4.0ms 122.4MB 723ms 50ms bun 1.2.9
javascript 1.js 830ms 3.2ms 111.2MB 930ms 70ms bun 1.2.9

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 2.js 860ms 1.2ms 68.7MB 850ms 10ms node 23.11.0
javascript 1.js 1604ms 4.1ms 67.8MB 1583ms 13ms node 23.11.0
javascript 2.js 1861ms 7.8ms 122.4MB 2037ms 77ms bun 1.2.9
javascript 1.js 2403ms 5.2ms 111.5MB 2730ms 157ms bun 1.2.9

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 165ms 2.5ms 58.0MB 157ms 10ms node 23.11.0
javascript 2.js 169ms 1.3ms 56.6MB 163ms 7ms node 23.11.0
javascript 1.js 325ms 3.1ms 115.1MB 367ms 77ms bun 1.2.9
javascript 2.js 364ms 2.6ms 126.0MB 383ms 57ms bun 1.2.9

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 519ms 4.4ms 144.8MB 687ms 143ms bun 1.2.9
javascript 1.js 576ms 13ms 130.3MB 670ms 63ms node 23.11.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 120ms 1.1ms 86.9MB 110ms 30ms bun 1.2.9
javascript 1.js 166ms 1.7ms 98.2MB 167ms 40ms node 23.11.0

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
javascript 6.js 462ms 6.7ms 56.1MB 447ms 10ms node 23.11.0
javascript 6.js 601ms 3.1ms 45.5MB 593ms 7ms bun 1.2.9

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
javascript 6.js 81ms 0.6ms 45.6MB 73ms 10ms bun 1.2.9
javascript 6.js 81ms 0.3ms 56.1MB 70ms 10ms node 23.11.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2621ms 17ms 60.0MB 2633ms 23ms node 23.11.0
javascript 1.js 2878ms 9.0ms 84.4MB 2900ms 57ms bun 1.2.9

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 693ms 5.4ms 57.4MB 700ms 13ms node 23.11.0
javascript 1.js 757ms 15ms 83.9MB 757ms 30ms bun 1.2.9

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 3.js 4871ms 6.7ms 87.6MB 4850ms 30ms node 23.11.0
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
javascript 3.js 1057ms 2.7ms 70.6MB 1037ms 20ms node 23.11.0
swift 1.swift 1928ms 4.2ms 7.0MB 1913ms 0ms swift 6.1.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2192ms 18ms 115.7MB 8290ms 60ms node 23.11.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 668ms 7.2ms 113.6MB 2350ms 57ms node 23.11.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 277ms 3.0ms 109.7MB 853ms 53ms node 23.11.0