Programming Language and compiler
Benchmarks

Swift VS Javascript 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
javascript 1-m.js 977ms 25ms 178.7MB 1493ms 240ms bun 1.2.6
javascript 1-m.js 1281ms 9.6ms 272.7MB 2213ms 177ms node 23.10.0
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
javascript 1.js 104ms 4.1ms 79.9MB 83ms 27ms bun 1.2.6
javascript 1.js 129ms 2.8ms 78.7MB 133ms 20ms node 23.10.0
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

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

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

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
javascript 1.js 13ms 0.4ms 32.9MB 0ms 0ms bun 1.2.6
javascript 1.js 32ms 0.2ms 48.1MB 18ms 4ms node 23.10.0

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
javascript 6.js 459ms 1.2ms 56.0MB 443ms 10ms node 23.10.0
javascript 6.js 798ms 23ms 46.0MB 793ms 7ms bun 1.2.6

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
javascript 6.js 79ms 0.5ms 56.1MB 67ms 7ms node 23.10.0
javascript 6.js 101ms 1.0ms 45.9MB 97ms 10ms bun 1.2.6

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 3.js timeout 0.0ms 88.3MB 4987ms 23ms node 23.10.0
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
javascript 3.js 1114ms 1.8ms 70.8MB 1097ms 17ms node 23.10.0
swift 1.swift 1877ms 8.7ms 7.0MB 1863ms 0ms swift 6.0.3