Programming Language and compiler
Benchmarks

Zig VS Swift benchmarks

Current benchmark data was generated on Tue Apr 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
zig 1.zig 1897ms 9.3ms 49.0MB 1870ms 13ms zig 0.14.0
swift 1.swift 2622ms 5.7ms 54.0MB 2590ms 20ms swift 6.0.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 154ms 2.4ms 7.0MB 143ms 0ms zig 0.14.0
swift 1.swift 241ms 3.1ms 12.0MB 227ms 0ms swift 6.0.3

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2251ms 1.9ms 2.5MB 2220ms 17ms zig 0.14.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 378ms 0.1ms 1.9MB 360ms 0ms zig 0.14.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2-m.zig 629ms 5.7ms 1.4MB 2390ms 0ms zig 0.14.0
zig 3-i.zig 1763ms 1.6ms 1.0MB 1753ms 0ms zig 0.14.0
swift 1.swift 2470ms 5.4ms 5.6MB 2460ms 0ms swift 6.0.3
zig 1.zig 2717ms 2.1ms 1.0MB 2710ms 0ms zig 0.14.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2-m.zig 59ms 1.2ms 1.4MB 200ms 0ms zig 0.14.0
zig 3-i.zig 147ms 0.1ms 1.1MB 140ms 0ms zig 0.14.0
swift 1.swift 211ms 0.6ms 5.6MB 200ms 0ms swift 6.0.3
zig 1.zig 230ms 0.5ms 1.0MB 220ms 0ms zig 0.14.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 87ms 0.8ms 1.0MB 80ms 0ms zig 0.14.0
swift 3-m.swift 135ms 0.5ms 20.7MB 387ms 0ms swift 6.0.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 12ms 3.3ms 1.0MB 0ms 0ms zig 0.14.0
swift 3.swift 36ms 0.7ms 18.2MB 30ms 0ms swift 6.0.3

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 1.0ms 0.0ms 1.1MB 0ms 0ms zig 0.14.0
swift 1.swift 2.5ms 0.3ms 5.9MB 0ms 0ms swift 6.0.3

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 503ms 8.9ms 26.4MB 480ms 7ms zig 0.14.0
swift 2-m.swift 1615ms 163ms 74.5MB 5223ms 30ms swift 6.0.3

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 69ms 3.3ms 15.4MB 53ms 0ms zig 0.14.0
swift 2-m.swift 259ms 0.7ms 59.9MB 673ms 27ms swift 6.0.3

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 33ms 0.4ms 2.8MB 20ms 0ms zig 0.14.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 93ms 2.9ms 2.8MB 83ms 0ms zig 0.14.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 15ms 0.7ms 1.3MB 10ms 0ms zig 0.14.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 248ms 1.2ms 4.0MB 240ms 0ms zig 0.14.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 12ms 0.1ms 1.1MB 0ms 0ms zig 0.14.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 866ms 5.7ms 41.0MB 840ms 13ms zig 0.14.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 177ms 1.1ms 11.0MB 160ms 0ms zig 0.14.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 198ms 0.7ms 1.0MB 190ms 0ms zig 0.14.0
zig 2.zig 280ms 0.3ms 1.0MB 270ms 0ms zig 0.14.0
zig 1.zig 315ms 0.9ms 1.1MB 310ms 0ms zig 0.14.0
swift 7.swift 347ms 2.5ms 9.8MB 337ms 0ms swift 6.0.3

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 22ms 0.3ms 1.0MB 13ms 0ms zig 0.14.0
zig 2.zig 30ms 0.1ms 1.0MB 20ms 0ms zig 0.14.0
zig 1.zig 34ms 0.5ms 1.1MB 30ms 0ms zig 0.14.0
swift 7.swift 41ms 1.3ms 9.8MB 30ms 0ms swift 6.0.3

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 286ms 9.1ms 40.1MB 270ms 0ms zig 0.14.0
zig 2.zig 326ms 2.2ms 6.0MB 313ms 0ms zig 0.14.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 57ms 1.8ms 10.8MB 47ms 0ms zig 0.14.0
zig 2.zig 82ms 0.8ms 2.3MB 70ms 0ms zig 0.14.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2465ms 3.7ms 2.2MB 2440ms 10ms zig 0.14.0
swift 1.swift timeout 0.0ms 7.1MB 4927ms 60ms swift 6.0.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 567ms 3.5ms 1.8MB 560ms 0ms zig 0.14.0
swift 1.swift 1870ms 12ms 7.0MB 1853ms 0ms swift 6.0.3

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 3697ms 15ms 1.4MB 3687ms 0ms zig 0.14.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 931ms 14ms 1.3MB 923ms 0ms zig 0.14.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 234ms 1.4ms 1.3MB 220ms 0ms zig 0.14.0