Programming Language and compiler
Benchmarks

Swift VS Zig 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
zig 1.zig 1721ms 8.7ms 49.0MB 1690ms 17ms zig 0.14.0
swift 1.swift 2603ms 10ms 53.8MB 2570ms 20ms swift 6.1.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 156ms 0.8ms 7.0MB 147ms 0ms zig 0.14.0
swift 1.swift 236ms 1.2ms 11.8MB 220ms 0ms swift 6.1.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2-m.zig 632ms 6.8ms 1.4MB 2400ms 0ms zig 0.14.0
zig 3-i.zig 1765ms 2.1ms 1.0MB 1757ms 0ms zig 0.14.0
swift 1.swift 2477ms 9.7ms 5.5MB 2470ms 0ms swift 6.1.0
zig 1.zig 2717ms 3.5ms 1.0MB 2707ms 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 60ms 0.7ms 1.4MB 200ms 0ms zig 0.14.0
zig 3-i.zig 147ms 0.2ms 1.0MB 140ms 0ms zig 0.14.0
swift 1.swift 213ms 1.6ms 5.5MB 203ms 0ms swift 6.1.0
zig 1.zig 228ms 1.2ms 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 88ms 1.7ms 1.0MB 80ms 0ms zig 0.14.0
swift 3-m.swift 149ms 1.4ms 20.9MB 430ms 7ms swift 6.1.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 11ms 0.8ms 1.0MB 0ms 0ms zig 0.14.0
swift 3.swift 39ms 0.2ms 14.4MB 40ms 0ms swift 6.1.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 1.1ms 0.2ms 1.1MB 0ms 0ms zig 0.14.0
swift 1.swift 2.4ms 0.3ms 5.8MB 0ms 0ms swift 6.1.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 315ms 1.9ms 67.1MB 830ms 30ms zig 0.14.0
zig 1.zig 504ms 5.3ms 28.1MB 477ms 10ms zig 0.14.0
swift 2-m.swift 1342ms 9.5ms 74.3MB 4893ms 33ms swift 6.1.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 64ms 1.1ms 54.4MB 133ms 27ms zig 0.14.0
zig 1.zig 66ms 1.8ms 15.4MB 50ms 0ms zig 0.14.0
swift 2-m.swift 254ms 1.0ms 59.8MB 660ms 37ms swift 6.1.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 198ms 1.2ms 1.0MB 190ms 0ms zig 0.14.0
zig 2.zig 279ms 0.4ms 1.0MB 270ms 0ms zig 0.14.0
zig 1.zig 315ms 1.0ms 1.1MB 307ms 0ms zig 0.14.0
swift 7.swift 345ms 0.9ms 10.0MB 337ms 0ms swift 6.1.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 22ms 0.3ms 1.1MB 10ms 0ms zig 0.14.0
zig 2.zig 30ms 0.1ms 1.0MB 20ms 0ms zig 0.14.0
zig 1.zig 34ms 0.6ms 1.1MB 23ms 0ms zig 0.14.0
swift 7.swift 38ms 0.6ms 10.1MB 30ms 0ms swift 6.1.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2466ms 3.3ms 2.2MB 2437ms 13ms zig 0.14.0
swift 1.swift timeout 0.0ms 7.1MB 4933ms 50ms swift 6.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 567ms 2.8ms 1.8MB 553ms 0ms zig 0.14.0
swift 1.swift 1944ms 18ms 7.0MB 1930ms 0ms swift 6.1.0