Programming Language and compiler
Benchmarks

Nim VS Kotlin benchmarks

Current benchmark data was generated on Thu Jul 13 2023, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -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 639ms 9.7ms 412.9MB 660ms 77ms kotlin/jvm 17.0.2
nim 2.nim 1955ms 2.8ms 34.1MB 1930ms 10ms nim 1.6.14
nim 2.nim 2105ms 6.7ms 35.0MB 2087ms 7ms nim/clang 1.6.14
kotlin 1.kt timeout 0.0ms 222.5MB 8533ms 983ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 132ms 9.9ms 109.4MB 123ms 13ms kotlin/jvm 17.0.2
nim 2.nim 186ms 1.2ms 5.6MB 177ms 0ms nim 1.6.14
nim 2.nim 194ms 3.4ms 5.7MB 183ms 0ms nim/clang 1.6.14
kotlin 1-m.kt 458ms 8.4ms 30.6MB 813ms 50ms 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 1.kt 2859ms 35ms 159.4MB 3670ms 50ms kotlin/jvm 17.0.2
kotlin 2-m.kt 3154ms 425ms 183.1MB 5987ms 73ms kotlin/jvm 17.0.2
kotlin 1.kt timeout 0.0ms 10.8MB 6413ms 250ms kotlin/native 1.8.21
kotlin 2-m.kt timeout 0.0ms 33.2MB 9280ms 163ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 423.4MB 3330ms 1317ms nim 1.6.14
nim 1.nim timeout 0.0ms 424.2MB 3350ms 1300ms nim/clang 1.6.14

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 691ms 31ms 100.3MB 1217ms 37ms kotlin/jvm 17.0.2
kotlin 2-m.kt 875ms 33ms 25.1MB 1567ms 33ms kotlin/native 1.8.21
kotlin 2-m.kt 1011ms 63ms 97.7MB 1837ms 37ms kotlin/jvm 17.0.2
kotlin 1.kt 1033ms 12ms 8.8MB 1310ms 50ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 421.6MB 3370ms 1283ms nim 1.6.14
nim 1.nim timeout 0.0ms 423.3MB 3447ms 1203ms nim/clang 1.6.14

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 3.0MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 3.0MB 4983ms 0ms nim/clang 1.6.14

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 2.3MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 2.2MB 4983ms 0ms nim/clang 1.6.14

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 259ms 0.7ms 1.0MB 250ms 0ms nim 1.6.14
nim 2.nim 346ms 1.7ms 1.3MB 330ms 0ms nim/clang 1.6.14
nim 1.nim 785ms 2.8ms 1.0MB 687ms 83ms nim 1.6.14
nim 1.nim 799ms 1.3ms 1.2MB 690ms 90ms nim/clang 1.6.14

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 28ms 0.5ms 1.0MB 20ms 0ms nim 1.6.14
nim 2.nim 36ms 0.3ms 1.3MB 30ms 0ms nim/clang 1.6.14
nim 1.nim 81ms 0.5ms 1.0MB 60ms 7ms nim 1.6.14
nim 1.nim 83ms 0.8ms 1.2MB 70ms 0ms nim/clang 1.6.14

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.2ms 0.1ms 1.0MB 0ms 0ms nim 1.6.14
kotlin 1.kt 2.2ms 0.6ms 1.5MB 0ms 0ms kotlin/native 1.8.21
nim 1.nim 2.9ms 2.0ms 1.2MB 0ms 0ms nim/clang 1.6.14
kotlin 1.kt 65ms 4.9ms 40.9MB 50ms 10ms kotlin/jvm 17.0.2

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 718ms 6.0ms 94.6MB 340ms 347ms nim/clang 1.6.14
nim 1.nim 722ms 2.7ms 94.2MB 313ms 377ms nim 1.6.14
kotlin 1.kt timeout 0.0ms 287.7MB 8840ms 760ms kotlin/jvm 17.0.2
kotlin 2.kt timeout 0.0ms 297.3MB 8820ms 700ms kotlin/jvm 17.0.2

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 121ms 1.3ms 18.3MB 50ms 53ms nim/clang 1.6.14
nim 1.nim 124ms 2.1ms 18.0MB 57ms 53ms nim 1.6.14
kotlin 2.kt 2423ms 55ms 184.2MB 2593ms 177ms kotlin/jvm 17.0.2
kotlin 1-m.kt 2619ms 165ms 185.2MB 4190ms 313ms kotlin/jvm 17.0.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 145ms 0.9ms 1.2MB 137ms 0ms nim/clang 1.6.14
nim 2.nim 152ms 0.8ms 1.1MB 140ms 0ms nim 1.6.14
kotlin 2-m.kt 227ms 2.7ms 113.7MB 337ms 27ms kotlin/jvm 17.0.2
kotlin 1.kt 257ms 15ms 113.5MB 333ms 20ms kotlin/jvm 17.0.2
kotlin 2-m.kt 455ms 11ms 7.9MB 673ms 13ms kotlin/native 1.8.21
kotlin 1.kt 910ms 6.2ms 6.0MB 1087ms 3ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 1.1MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 1.2MB 4983ms 0ms nim/clang 1.6.14

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2.kt 367ms 4.1ms 126.9MB 457ms 30ms kotlin/jvm 17.0.2
nim 2.nim 428ms 0.6ms 1.3MB 417ms 0ms nim/clang 1.6.14
nim 2.nim 450ms 0.8ms 1.1MB 440ms 0ms nim 1.6.14
kotlin 1.kt 459ms 1.4ms 132.3MB 493ms 43ms kotlin/jvm 17.0.2
kotlin 2-m.kt 1357ms 15ms 7.5MB 2073ms 30ms kotlin/native 1.8.21
kotlin 1.kt 2721ms 30ms 6.6MB 3223ms 13ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 1.0MB 4987ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 1.3MB 4987ms 0ms nim/clang 1.6.14

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 63ms 0.5ms 1.2MB 50ms 0ms nim/clang 1.6.14
nim 2.nim 65ms 1.7ms 1.0MB 57ms 0ms nim 1.6.14
kotlin 1.kt 180ms 11ms 75.9MB 233ms 23ms kotlin/jvm 17.0.2
kotlin 2-m.kt 181ms 1.5ms 78.5MB 263ms 10ms kotlin/jvm 17.0.2
kotlin 2-m.kt 226ms 3.1ms 5.1MB 367ms 0ms kotlin/native 1.8.21
kotlin 1.kt 253ms 9.0ms 4.2MB 340ms 0ms kotlin/native 1.8.21
nim 1.nim 389ms 5.3ms 1.2MB 373ms 0ms nim/clang 1.6.14
nim 1.nim 444ms 3.1ms 1.0MB 430ms 0ms nim 1.6.14

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 656ms 0.7ms 4.8MB 647ms 0ms nim/clang 1.6.14
nim 1.nim 983ms 0.4ms 4.3MB 970ms 0ms nim 1.6.14

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 30ms 0.7ms 1.2MB 20ms 0ms nim/clang 1.6.14
nim 1.nim 43ms 0.7ms 1.1MB 30ms 0ms nim 1.6.14

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 451ms 3.4ms 285.9MB 453ms 57ms kotlin/jvm 17.0.2
nim 1.nim 992ms 2.9ms 34.7MB 977ms 0ms nim 1.6.14
nim 1.nim 1065ms 6.2ms 34.5MB 1047ms 3ms nim/clang 1.6.14
kotlin 1-m.kt 2659ms 202ms 142.4MB 4287ms 450ms kotlin/native 1.8.21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 178ms 0.4ms 221.7MB 157ms 47ms kotlin/jvm 17.0.2
nim 1.nim 211ms 1.7ms 9.3MB 197ms 0ms nim 1.6.14
nim 1.nim 229ms 2.5ms 9.5MB 217ms 0ms nim/clang 1.6.14
kotlin 1-m.kt 474ms 3.2ms 38.4MB 753ms 73ms kotlin/native 1.8.21

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 382ms 0.6ms 1.3MB 370ms 0ms nim 1.6.14
nim 2.nim 411ms 0.8ms 1.3MB 400ms 0ms nim/clang 1.6.14
kotlin 1n.kt 532ms 5.2ms 1.5MB 517ms 0ms kotlin/native 1.8.21
kotlin 1.kt 576ms 4.4ms 42.8MB 577ms 17ms kotlin/jvm 17.0.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 41ms 0.3ms 1.3MB 30ms 0ms nim 1.6.14
nim 2.nim 43ms 0.0ms 1.2MB 30ms 0ms nim/clang 1.6.14
kotlin 1n.kt 55ms 0.1ms 1.5MB 50ms 0ms kotlin/native 1.8.21
kotlin 1.kt 148ms 2.5ms 43.4MB 150ms 10ms kotlin/jvm 17.0.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 568ms 14ms 40.3MB 550ms 0ms nim 1.6.14
nim 2.nim 608ms 6.1ms 6.5MB 597ms 0ms nim/clang 1.6.14
nim 2.nim 633ms 1.1ms 6.1MB 617ms 0ms nim 1.6.14
nim 1.nim 758ms 55ms 41.3MB 743ms 0ms nim/clang 1.6.14

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 129ms 0.5ms 11.0MB 120ms 0ms nim 1.6.14
nim 1.nim 136ms 0.4ms 11.3MB 123ms 0ms nim/clang 1.6.14
nim 2.nim 142ms 1.0ms 3.3MB 130ms 0ms nim/clang 1.6.14
nim 2.nim 148ms 0.7ms 3.0MB 140ms 0ms nim 1.6.14

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt timeout 0.0ms 235.7MB 5407ms 70ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 22.7MB 6417ms 167ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 8.2MB 5040ms 90ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 5.9MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 6.0MB 4990ms 0ms nim/clang 1.6.14

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 1452ms 7.6ms 216.7MB 1817ms 63ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 26.7MB 6497ms 150ms kotlin/native 1.8.21
kotlin 2n.kt timeout 0.0ms 10.6MB 5027ms 107ms kotlin/native 1.8.21
nim 1.nim timeout 0.0ms 5.8MB 4990ms 0ms nim 1.6.14
nim 1.nim timeout 0.0ms 6.1MB 4983ms 0ms nim/clang 1.6.14

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 2492ms 6.4ms 168.0MB 2437ms 37ms nim/clang 1.6.14
nim 1.nim 2557ms 7.1ms 167.1MB 2500ms 37ms nim 1.6.14
kotlin 1.kt timeout 0.0ms 161.2MB 5350ms 40ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 277.0MB 5783ms 483ms kotlin/native 1.8.21

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 255ms 0.2ms 17.2MB 240ms 0ms nim/clang 1.6.14
nim 1.nim 264ms 1.1ms 16.8MB 250ms 0ms nim 1.6.14
kotlin 1.kt 1078ms 2.1ms 91.3MB 1450ms 23ms kotlin/jvm 17.0.2
kotlin 1n.kt 4483ms 22ms 65.0MB 5897ms 23ms kotlin/native 1.8.21

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 4117ms 0.5ms 1.2MB 4103ms 0ms nim/clang 1.6.14
nim 1.nim 4119ms 0.2ms 1.3MB 4110ms 0ms nim 1.6.14

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1031ms 0.5ms 1.3MB 1020ms 0ms nim/clang 1.6.14
nim 1.nim 1034ms 3.4ms 1.3MB 1020ms 0ms nim 1.6.14

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 261ms 0.8ms 1.3MB 250ms 0ms nim/clang 1.6.14
nim 1.nim 261ms 1.1ms 1.3MB 250ms 0ms nim 1.6.14