Programming Language and compiler
Benchmarks

Swift VS Dart 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
dart 1.dart 697ms 3.5ms 80.8MB 670ms 33ms dart/exe 3.7.3
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
dart 1.dart 74ms 0.8ms 42.8MB 47ms 17ms dart/exe 3.7.3
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
swift 1.swift 2477ms 9.7ms 5.5MB 2470ms 0ms swift 6.1.0
dart 2.dart 2709ms 2.1ms 6.1MB 2697ms 0ms dart/exe 3.7.3

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 213ms 1.6ms 5.5MB 203ms 0ms swift 6.1.0
dart 2.dart 221ms 0.6ms 6.1MB 210ms 0ms dart/exe 3.7.3

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3-m.swift 149ms 1.4ms 20.9MB 430ms 7ms swift 6.1.0
dart 1.dart 360ms 2.6ms 8.8MB 350ms 0ms dart/exe 3.7.3

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3.swift 39ms 0.2ms 14.4MB 40ms 0ms swift 6.1.0
dart 1.dart 41ms 0.6ms 8.8MB 30ms 0ms dart/exe 3.7.3

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.4ms 0.3ms 5.8MB 0ms 0ms swift 6.1.0
dart 1.dart 3.8ms 0.3ms 5.4MB 0ms 0ms dart/exe 3.7.3

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3-m.dart 1121ms 16ms 275.8MB 3323ms 120ms dart/exe 3.7.3
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
dart 3-m.dart 214ms 8.4ms 185.8MB 517ms 73ms dart/exe 3.7.3
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
swift 7.swift 345ms 0.9ms 10.0MB 337ms 0ms swift 6.1.0
dart 3.dart 408ms 3.0ms 6.3MB 400ms 0ms dart/exe 3.7.3

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 38ms 0.6ms 10.1MB 30ms 0ms swift 6.1.0
dart 3.dart 45ms 0.2ms 6.4MB 40ms 0ms dart/exe 3.7.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1346ms 10ms 14.8MB 1320ms 27ms dart/exe 3.7.3
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
dart 2.dart 329ms 3.6ms 14.8MB 313ms 13ms dart/exe 3.7.3
swift 1.swift 1944ms 18ms 7.0MB 1930ms 0ms swift 6.1.0