Programming Language and compiler
Benchmarks

Kotlin VS Dart benchmarks

Current benchmark data was generated on Sat Mar 29 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 492ms 35ms 1223.9MB 553ms 103ms kotlin/jvm 21
dart 1.dart 710ms 1.2ms 80.8MB 680ms 37ms dart/exe 3.7.2
kotlin 1-m.kt 3082ms 15ms 246.4MB 5163ms 690ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 76ms 0.7ms 42.8MB 50ms 13ms dart/exe 3.7.2
kotlin 1.kt 104ms 0.8ms 160.3MB 113ms 27ms kotlin/jvm 21
kotlin 1-m.kt 276ms 9.6ms 30.3MB 443ms 57ms kotlin/native 1.8.21

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 1734ms 92ms 234.6MB 6420ms 97ms kotlin/jvm 21
kotlin 1.kt 2168ms 9.4ms 222.7MB 3003ms 67ms kotlin/jvm 21
dart 1.dart timeout 0.0ms 19.3MB 5467ms 70ms dart/exe 3.7.2
kotlin 1.kt timeout 0.0ms 12.9MB 6077ms 487ms kotlin/native 1.8.21
kotlin 2-m.kt timeout 0.0ms 117.1MB 18960ms 167ms kotlin/native 1.8.21

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 359ms 1.9ms 10.6MB 363ms 13ms dart/exe 3.7.2
kotlin 2-m.kt 426ms 4.7ms 25.0MB 1567ms 20ms kotlin/native 1.8.21
kotlin 1-m.kt 474ms 4.8ms 76.6MB 1057ms 50ms kotlin/jvm 21
kotlin 1.kt 689ms 16ms 8.8MB 813ms 67ms kotlin/native 1.8.21
kotlin 2-m.kt 780ms 21ms 100.6MB 2703ms 63ms kotlin/jvm 21

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 1.9ms 0.2ms 2.6MB 0ms 0ms kotlin/native 1.8.21
dart 1.dart 3.7ms 0.3ms 5.5MB 0ms 0ms dart/exe 3.7.2
kotlin 1.kt 52ms 0.7ms 47.2MB 62ms 14ms 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 1437ms 37ms 100.1MB 1320ms 1593ms dart/exe 3.7.2
dart 1.dart 4615ms 74ms 100.0MB 1600ms 1870ms dart/exe 3.7.2
kotlin 2-m.kt 4775ms 56ms 442.2MB 14967ms 2663ms kotlin/jvm 21
kotlin 1.kt timeout 0.0ms 391.3MB 16150ms 2790ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2-m.dart 265ms 9.2ms 50.1MB 183ms 297ms dart/exe 3.7.2
kotlin 1-m.kt 2114ms 204ms 206.1MB 5923ms 717ms kotlin/jvm 21
kotlin 2-m.kt 2322ms 100ms 242.4MB 5993ms 683ms kotlin/jvm 21
dart 1.dart 2369ms 11ms 50.6MB 193ms 290ms dart/exe 3.7.2

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 163ms 0.4ms 53.5MB 133ms 17ms dart/exe 3.7.2
kotlin 1-m.kt 835ms 90ms 208.3MB 2240ms 100ms kotlin/jvm 21

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 1499ms 13ms 206.0MB 1707ms 123ms dart/exe 3.7.2
kotlin 1-m.kt 2326ms 37ms 834.4MB 5107ms 183ms kotlin/jvm 21

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 167ms 2.8ms 9.3MB 157ms 0ms dart/exe 3.7.2
kotlin 1-m.kt 183ms 4.3ms 96.4MB 297ms 23ms kotlin/jvm 21
kotlin 2-m.kt 198ms 3.5ms 105.0MB 417ms 30ms kotlin/jvm 21
kotlin 2.kt 306ms 5.2ms 5.8MB 433ms 13ms kotlin/native 1.8.21
dart 1.dart 495ms 4.8ms 9.3MB 480ms 0ms dart/exe 3.7.2
kotlin 1.kt 513ms 4.5ms 5.9MB 613ms 7ms kotlin/native 1.8.21

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 312ms 12ms 214.5MB 533ms 50ms kotlin/jvm 21
kotlin 1.kt 329ms 7.5ms 204.7MB 423ms 53ms kotlin/jvm 21
dart 2.dart 483ms 12ms 9.4MB 470ms 0ms dart/exe 3.7.2
kotlin 2.kt 909ms 6.8ms 5.9MB 1307ms 47ms kotlin/native 1.8.21
dart 1.dart 1467ms 4.5ms 9.3MB 1447ms 10ms dart/exe 3.7.2
kotlin 1.kt 1558ms 23ms 5.9MB 1883ms 23ms kotlin/native 1.8.21

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 77ms 1.9ms 9.1MB 63ms 0ms dart/exe 3.7.2
dart 1.dart 115ms 2.3ms 9.3MB 100ms 0ms dart/exe 3.7.2
kotlin 2.kt 140ms 1.7ms 3.6MB 193ms 0ms kotlin/native 1.8.21
kotlin 1-m.kt 140ms 7.2ms 92.4MB 263ms 30ms kotlin/jvm 21
kotlin 2-m.kt 162ms 16ms 95.6MB 337ms 30ms kotlin/jvm 21
kotlin 1.kt 170ms 1.5ms 3.8MB 213ms 0ms kotlin/native 1.8.21

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 324ms 5.6ms 64.4MB 303ms 20ms dart/exe 3.7.2
kotlin 1.kt 360ms 8.1ms 681.4MB 397ms 80ms kotlin/jvm 21
kotlin 1-m.kt 1499ms 4.3ms 134.5MB 2283ms 337ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 88ms 1.3ms 43.9MB 57ms 23ms dart/exe 3.7.2
kotlin 1.kt 130ms 2.8ms 208.5MB 157ms 33ms kotlin/jvm 21
kotlin 1-m.kt 312ms 4.3ms 38.5MB 460ms 70ms kotlin/native 1.8.21

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 3.dart 410ms 5.1ms 6.3MB 397ms 0ms dart/exe 3.7.2
kotlin 1n.kt 413ms 3.0ms 2.6MB 403ms 0ms kotlin/native 1.8.21
kotlin 1.kt 447ms 1.8ms 49.3MB 490ms 20ms kotlin/jvm 21

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1n.kt 45ms 1.9ms 2.6MB 40ms 0ms kotlin/native 1.8.21
dart 3.dart 46ms 0.8ms 6.1MB 40ms 0ms dart/exe 3.7.2
kotlin 1-m.kt 120ms 0.4ms 49.6MB 163ms 20ms kotlin/jvm 21

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 1368ms 13ms 15.0MB 1333ms 40ms dart/exe 3.7.2
kotlin 1.kt 3753ms 45ms 355.1MB 4627ms 110ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 5.5MB 6320ms 267ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 6.3MB 5000ms 167ms kotlin/native 1.8.21

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 2.dart 339ms 5.2ms 14.8MB 310ms 20ms dart/exe 3.7.2
kotlin 1-m.kt 983ms 29ms 355.6MB 1763ms 100ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 5.5MB 6270ms 273ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 6.3MB 5010ms 150ms kotlin/native 1.8.21

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 188.1MB 4983ms 50ms dart/exe 3.7.2
kotlin 1.kt timeout 0.0ms 171.2MB 5393ms 43ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 277.0MB 5430ms 493ms kotlin/native 1.8.21

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
dart 1.dart 572ms 26ms 43.2MB 550ms 13ms dart/exe 3.7.2
kotlin 1-m.kt 807ms 4.6ms 134.0MB 1223ms 40ms kotlin/jvm 21
kotlin 1n.kt 3182ms 11ms 63.1MB 3923ms 17ms kotlin/native 1.8.21

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 3130ms 52ms 233.8MB 4123ms 70ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 984ms 32ms 232.4MB 1807ms 57ms kotlin/jvm 21