Programming Language and compiler
Benchmarks

Swift VS Go 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
go 1.go 1269ms 2.1ms 54.9MB 1247ms 7ms tinygo 0.37.0
go 1-m.go 2414ms 64ms 46.3MB 5500ms 40ms go 1.24.1
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
go 1.go 117ms 2.2ms 5.6MB 107ms 0ms tinygo 0.37.0
go 1-m.go 211ms 1.3ms 7.9MB 373ms 10ms go 1.24.1
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
go 3-m.go 688ms 26ms 3.5MB 2590ms 0ms go 1.24.1
go 3.go 2017ms 0.3ms 48.6MB 1997ms 7ms tinygo 0.37.0
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
go 3-m.go 74ms 0.4ms 5.6MB 197ms 0ms go 1.24.1
go 3.go 194ms 0.5ms 49.0MB 173ms 3ms tinygo 0.37.0
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
go 3-m.go 127ms 1.0ms 7.5MB 377ms 3ms go 1.24.1
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
go 3-m.go 17ms 0.2ms 7.5MB 33ms 0ms go 1.24.1
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
go 1.go 0.9ms 0.1ms 0.4MB 0ms 0ms tinygo 0.37.0
go 1.go 1.3ms 0.7ms 3.4MB 0ms 0ms go 1.24.1
swift 1.swift 2.5ms 0.2ms 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
go 7-m.go 689ms 8.1ms 40.1MB 2413ms 33ms go 1.24.1
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
go 7-m.go 131ms 3.0ms 22.7MB 347ms 20ms go 1.24.1
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
go 1.go 350ms 2.9ms 0.4MB 340ms 0ms tinygo 0.37.0
go 1.go 352ms 2.1ms 3.5MB 343ms 0ms go 1.24.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 1.go 37ms 0.8ms 0.4MB 30ms 0ms tinygo 0.37.0
go 1.go 39ms 1.2ms 3.5MB 30ms 0ms go 1.24.1
swift 7.swift 40ms 0.2ms 9.8MB 30ms 0ms swift 6.0.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
go 8.go 1188ms 4.7ms 8.6MB 1177ms 0ms go 1.24.1
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
go 8.go 282ms 2.2ms 8.6MB 270ms 0ms go 1.24.1
swift 1.swift 1877ms 8.7ms 7.0MB 1863ms 0ms swift 6.0.3