Programming Language and compiler
Benchmarks

Dart VS Swift benchmarks

Current benchmark data was generated on Tue Jul 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 755ms 6.7ms 80.9MB 730ms 33ms dart/exe 3.8.1
swift 1.swift 3027ms 21ms 53.8MB 2990ms 20ms swift 6.1.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 77ms 0.9ms 42.8MB 53ms 13ms dart/exe 3.8.1
swift 1.swift 244ms 5.4ms 11.6MB 230ms 0ms swift 6.1.2

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart timeout 0.0ms 19.3MB 5467ms 70ms dart/exe 3.8.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 356ms 3.3ms 10.4MB 353ms 10ms dart/exe 3.8.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 3647ms 4.0ms 18.3MB 3603ms 40ms dart/exe 3.8.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 587ms 5.6ms 10.0MB 563ms 13ms dart/exe 3.8.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2463ms 3.1ms 5.4MB 2450ms 0ms swift 6.1.2
dart 2.dart 2683ms 15ms 6.4MB 2673ms 0ms dart/exe 3.8.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 213ms 1.3ms 5.9MB 203ms 0ms swift 6.1.2
dart 2.dart 221ms 2.1ms 6.3MB 210ms 0ms dart/exe 3.8.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3-m.swift 141ms 1.1ms 20.8MB 400ms 7ms swift 6.1.2
dart 1.dart 361ms 0.4ms 8.8MB 350ms 0ms dart/exe 3.8.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3.swift 38ms 0.4ms 14.2MB 30ms 0ms swift 6.1.2
dart 1.dart 43ms 1.2ms 8.9MB 30ms 0ms dart/exe 3.8.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 1.swift 2.6ms 0.1ms 5.6MB 0ms 0ms swift 6.1.2
dart 1.dart 3.4ms 0.1ms 6.4MB 0ms 0ms dart/exe 3.8.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2-m.dart 1318ms 29ms 95.3MB 1383ms 1397ms dart/exe 3.8.1
dart 1.dart 4426ms 153ms 101.2MB 1590ms 1623ms dart/exe 3.8.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2-m.dart 246ms 6.8ms 50.1MB 187ms 263ms dart/exe 3.8.1
dart 1.dart 2006ms 502ms 50.0MB 180ms 240ms dart/exe 3.8.1

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 164ms 2.5ms 53.3MB 137ms 20ms dart/exe 3.8.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 1452ms 7.1ms 204.4MB 1683ms 117ms dart/exe 3.8.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3-m.dart 1264ms 77ms 267.9MB 3790ms 113ms dart/exe 3.8.1
swift 2-m.swift 1599ms 222ms 78.6MB 5027ms 40ms swift 6.1.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3-m.dart 239ms 6.6ms 185.1MB 553ms 70ms dart/exe 3.8.1
swift 2-m.swift 260ms 7.4ms 59.8MB 673ms 30ms swift 6.1.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 173ms 4.6ms 9.5MB 163ms 0ms dart/exe 3.8.1
dart 1.dart 575ms 4.1ms 9.4MB 563ms 0ms dart/exe 3.8.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 489ms 11ms 9.3MB 477ms 0ms dart/exe 3.8.1
dart 1.dart 1704ms 3.9ms 9.1MB 1690ms 3ms dart/exe 3.8.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 79ms 0.6ms 9.1MB 70ms 0ms dart/exe 3.8.1
dart 1.dart 119ms 2.5ms 8.6MB 110ms 0ms dart/exe 3.8.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 338ms 1.4ms 63.8MB 317ms 27ms dart/exe 3.8.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 86ms 1.5ms 43.6MB 60ms 20ms dart/exe 3.8.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 350ms 7.2ms 10.3MB 343ms 0ms swift 6.1.2
dart 3.dart 407ms 3.2ms 6.3MB 397ms 0ms dart/exe 3.8.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 39ms 1.1ms 10.0MB 30ms 0ms swift 6.1.2
dart 3.dart 46ms 0.8ms 6.3MB 37ms 0ms dart/exe 3.8.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1266ms 3.4ms 14.9MB 1237ms 30ms dart/exe 3.8.1
swift 1.swift timeout 0.0ms 7.3MB 4927ms 63ms swift 6.1.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 314ms 7.1ms 14.8MB 293ms 13ms dart/exe 3.8.1
swift 1.swift 1866ms 2.8ms 7.0MB 1850ms 3ms swift 6.1.2

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart timeout 0.0ms 130.1MB 4963ms 37ms dart/exe 3.8.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 635ms 5.3ms 43.2MB 607ms 20ms dart/exe 3.8.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 3780ms 11ms 6.4MB 3770ms 0ms dart/exe 3.8.1
dart 2.dart 4939ms 15ms 6.4MB 4923ms 0ms dart/exe 3.8.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 944ms 3.1ms 6.3MB 933ms 0ms dart/exe 3.8.1
dart 2.dart 1249ms 10ms 6.3MB 1233ms 0ms dart/exe 3.8.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 238ms 0.3ms 6.3MB 230ms 0ms dart/exe 3.8.1
dart 2.dart 314ms 1.2ms 6.3MB 303ms 0ms dart/exe 3.8.1