Programming Language and compiler
Benchmarks

Kotlin VS Dart 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
kotlin 1.kt 488ms 8.7ms 575.8MB 583ms 93ms kotlin/jvm 21
dart 1.dart 755ms 6.7ms 80.9MB 730ms 33ms dart/exe 3.8.1
kotlin 1.kt 3941ms 160ms 145.0MB 4120ms 63ms kotlin/native 2.1.20

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
kotlin 1.kt 121ms 2.9ms 159.3MB 143ms 33ms kotlin/jvm 21
kotlin 1.kt 210ms 3.5ms 17.7MB 217ms 7ms kotlin/native 2.1.20

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 2049ms 224ms 241.0MB 7630ms 117ms kotlin/jvm 21
kotlin 1.kt 2241ms 54ms 220.1MB 3060ms 77ms kotlin/jvm 21
kotlin 2-m.kt 4233ms 52ms 21.4MB 14190ms 543ms kotlin/native 2.1.20
dart 1.dart timeout 0.0ms 19.3MB 5467ms 70ms dart/exe 3.8.1
kotlin 1.kt timeout 0.0ms 17.4MB 5510ms 20ms kotlin/native 2.1.20

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 248ms 6.0ms 21.0MB 830ms 43ms kotlin/native 2.1.20
dart 1.dart 356ms 3.3ms 10.4MB 353ms 10ms dart/exe 3.8.1
kotlin 1.kt 388ms 5.4ms 17.4MB 397ms 7ms kotlin/native 2.1.20
kotlin 1-m.kt 485ms 16ms 75.0MB 1087ms 43ms kotlin/jvm 21
kotlin 2-m.kt 854ms 53ms 101.2MB 2957ms 77ms kotlin/jvm 21

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 2.2ms 0.1ms 3.0MB 0ms 0ms kotlin/native 2.1.20
dart 1.dart 3.4ms 0.1ms 6.4MB 0ms 0ms dart/exe 3.8.1
kotlin 1.kt 65ms 2.5ms 47.7MB 76ms 16ms kotlin/jvm 21

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
kotlin 2-m.kt 3271ms 1443ms 346.3MB 5647ms 970ms kotlin/jvm 21
dart 1.dart 4426ms 153ms 101.2MB 1590ms 1623ms dart/exe 3.8.1
kotlin 1.kt timeout 0.0ms 402.2MB 16220ms 2767ms kotlin/jvm 21

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
kotlin 1-m.kt 2119ms 180ms 229.3MB 6180ms 533ms kotlin/jvm 21
kotlin 2-m.kt 2206ms 240ms 241.3MB 4083ms 443ms kotlin/jvm 21

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
kotlin 1-m.kt 848ms 12ms 174.2MB 2307ms 73ms kotlin/jvm 21

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
kotlin 1-m.kt 1778ms 57ms 662.5MB 4197ms 157ms kotlin/jvm 21

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2.kt 173ms 14ms 12.4MB 180ms 0ms kotlin/native 2.1.20
dart 2.dart 173ms 4.6ms 9.5MB 163ms 0ms dart/exe 3.8.1
kotlin 1-m.kt 193ms 3.9ms 94.9MB 320ms 27ms kotlin/jvm 21
kotlin 2-m.kt 207ms 8.3ms 101.0MB 433ms 37ms kotlin/jvm 21
kotlin 1.kt 359ms 8.0ms 12.5MB 360ms 0ms kotlin/native 2.1.20
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
kotlin 2-m.kt 318ms 3.4ms 212.1MB 533ms 57ms kotlin/jvm 21
kotlin 1.kt 341ms 3.1ms 202.9MB 460ms 37ms kotlin/jvm 21
kotlin 2.kt 475ms 5.0ms 12.4MB 503ms 0ms kotlin/native 2.1.20
dart 2.dart 489ms 11ms 9.3MB 477ms 0ms dart/exe 3.8.1
kotlin 1.kt 1030ms 1.3ms 12.4MB 1057ms 7ms kotlin/native 2.1.20
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
kotlin 2.kt 95ms 0.7ms 12.8MB 90ms 0ms kotlin/native 2.1.20
dart 1.dart 119ms 2.5ms 8.6MB 110ms 0ms dart/exe 3.8.1
kotlin 1.kt 121ms 0.6ms 12.8MB 117ms 0ms kotlin/native 2.1.20
kotlin 1-m.kt 153ms 1.1ms 90.5MB 293ms 23ms kotlin/jvm 21
kotlin 2-m.kt 170ms 13ms 96.5MB 367ms 33ms kotlin/jvm 21

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
kotlin 1.kt 389ms 8.7ms 680.7MB 447ms 90ms kotlin/jvm 21
kotlin 1.kt 1857ms 13ms 89.9MB 1940ms 43ms kotlin/native 2.1.20

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
kotlin 1-m.kt 159ms 6.4ms 207.2MB 217ms 37ms kotlin/jvm 21
kotlin 1.kt 258ms 3.7ms 25.7MB 263ms 10ms kotlin/native 2.1.20

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1n.kt 351ms 1.9ms 3.5MB 340ms 0ms kotlin/native 2.1.20
dart 3.dart 407ms 3.2ms 6.3MB 397ms 0ms dart/exe 3.8.1
kotlin 1.kt 443ms 2.0ms 49.2MB 487ms 17ms kotlin/jvm 21

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1n.kt 38ms 0.7ms 3.6MB 30ms 0ms kotlin/native 2.1.20
dart 3.dart 46ms 0.8ms 6.3MB 37ms 0ms dart/exe 3.8.1
kotlin 1-m.kt 118ms 1.1ms 49.4MB 167ms 13ms kotlin/jvm 21

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
kotlin 1.kt 3717ms 19ms 358.9MB 4580ms 100ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 26.9MB 3970ms 1520ms kotlin/native 2.1.20
kotlin 2n.kt timeout 0.0ms 30.9MB 5110ms 127ms kotlin/native 2.1.20

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
kotlin 1-m.kt 983ms 36ms 353.7MB 1773ms 90ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 27.0MB 4003ms 1517ms kotlin/native 2.1.20
kotlin 2n.kt timeout 0.0ms 30.4MB 5110ms 123ms kotlin/native 2.1.20

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
kotlin 1.kt timeout 0.0ms 173.4MB 5410ms 47ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 226.8MB 5063ms 120ms kotlin/native 2.1.20

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
kotlin 1-m.kt 841ms 4.2ms 134.6MB 1283ms 37ms kotlin/jvm 21
kotlin 1n.kt 3213ms 39ms 51.1MB 3283ms 77ms kotlin/native 2.1.20

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 3074ms 30ms 231.8MB 4047ms 73ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 987ms 13ms 231.9MB 1760ms 47ms kotlin/jvm 21