Programming Language and compiler
Benchmarks

Nim VS Kotlin benchmarks

Current benchmark data was generated on Wed Sep 28 2022, 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 646ms 21ms 412.3MB 653ms 97ms kotlin/jvm 17.0.2
nim 2.nim 3344ms 2.3ms 35.2MB 3323ms 3ms nim/clang 1.6.8
nim 2.nim 3490ms 2.8ms 34.6MB 3467ms 10ms nim 1.6.8
kotlin 1-m.kt 4834ms 48ms 246.8MB 7880ms 53ms kotlin/native 1.7.10

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 126ms 2.8ms 109.7MB 110ms 30ms kotlin/jvm 17.0.2
nim 2.nim 315ms 0.7ms 5.7MB 303ms 0ms nim/clang 1.6.8
nim 2.nim 330ms 1.8ms 5.4MB 317ms 0ms nim 1.6.8
kotlin 1-m.kt 415ms 1.2ms 30.5MB 690ms 0ms kotlin/native 1.7.10

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 2872ms 80ms 157.7MB 5470ms 67ms kotlin/jvm 17.0.2
kotlin 1.kt 3016ms 39ms 154.5MB 3863ms 37ms kotlin/jvm 17.0.2
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
kotlin 2-m.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 689ms 6.6ms 94.2MB 1210ms 43ms kotlin/jvm 17.0.2
kotlin 2-m.kt 867ms 23ms 29.8MB 1533ms 30ms kotlin/native 1.7.10
kotlin 2-m.kt 1058ms 13ms 103.6MB 1930ms 37ms kotlin/jvm 17.0.2
kotlin 1.kt 1077ms 5.0ms 10.6MB 1237ms 7ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 257ms 0.2ms 0.7MB 240ms 0ms nim 1.6.8
nim 2.nim 336ms 0.6ms 1.0MB 323ms 0ms nim/clang 1.6.8
nim 1.nim 788ms 5.6ms 0.7MB 703ms 67ms nim 1.6.8
nim 1.nim 807ms 0.6ms 1.0MB 720ms 70ms nim/clang 1.6.8

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 28ms 0.5ms 0.7MB 20ms 0ms nim 1.6.8
nim 2.nim 36ms 0.4ms 1.0MB 27ms 0ms nim/clang 1.6.8
nim 1.nim 81ms 0.6ms 0.7MB 57ms 10ms nim 1.6.8
nim 1.nim 84ms 0.9ms 0.9MB 70ms 0ms nim/clang 1.6.8

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.6ms 0.9ms 1.6MB 0ms 0ms nim 1.6.8
nim 1.nim 2.0ms 0.8ms 1.0MB 0ms 0ms nim/clang 1.6.8
kotlin 1.kt 2.4ms 0.6ms 1.1MB 0ms 0ms kotlin/native 1.7.10
kotlin 1.kt 63ms 5.3ms 40.8MB 46ms 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 710ms 5.4ms 94.0MB 317ms 367ms nim 1.6.8
nim 1.nim 712ms 0.7ms 93.4MB 280ms 403ms nim/clang 1.6.8
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2
kotlin 2.kt timeout 0.0ms 0.0MB 0ms 0ms 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 1.9ms 17.9MB 50ms 57ms nim 1.6.8
nim 1.nim 124ms 2.1ms 18.2MB 53ms 50ms nim/clang 1.6.8
kotlin 2-m.kt 2265ms 143ms 199.2MB 3520ms 200ms kotlin/jvm 17.0.2
kotlin 1-m.kt 2424ms 263ms 182.4MB 3883ms 237ms 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 146ms 0.2ms 1.9MB 140ms 0ms nim/clang 1.6.8
nim 2.nim 158ms 2.6ms 0.7MB 150ms 0ms nim 1.6.8
kotlin 1.kt 235ms 2.4ms 109.9MB 300ms 20ms kotlin/jvm 17.0.2
kotlin 2-m.kt 240ms 22ms 118.0MB 360ms 23ms kotlin/jvm 17.0.2
kotlin 2-m.kt 464ms 12ms 54.1MB 747ms 3ms kotlin/native 1.7.10
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2.kt 369ms 0.6ms 130.6MB 470ms 27ms kotlin/jvm 17.0.2
nim 2.nim 433ms 0.7ms 1.0MB 420ms 0ms nim/clang 1.6.8
kotlin 1.kt 454ms 2.5ms 132.8MB 503ms 37ms kotlin/jvm 17.0.2
nim 2.nim 465ms 0.3ms 0.7MB 457ms 0ms nim 1.6.8
kotlin 2-m.kt 1384ms 2.6ms 146.0MB 2140ms 37ms kotlin/native 1.7.10
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 64ms 0.8ms 0.9MB 53ms 0ms nim/clang 1.6.8
nim 2.nim 69ms 0.2ms 0.7MB 60ms 0ms nim 1.6.8
kotlin 1-m.kt 170ms 2.4ms 75.9MB 250ms 17ms kotlin/jvm 17.0.2
kotlin 2-m.kt 178ms 4.3ms 76.8MB 253ms 20ms kotlin/jvm 17.0.2
kotlin 2-m.kt 237ms 4.8ms 27.9MB 387ms 0ms kotlin/native 1.7.10
nim 1.nim 416ms 2.7ms 1.0MB 403ms 0ms nim/clang 1.6.8
nim 1.nim 495ms 34ms 0.7MB 483ms 0ms nim 1.6.8
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 574ms 0.4ms 4.7MB 560ms 0ms nim/clang 1.6.8
nim 1.nim 996ms 1.3ms 4.5MB 980ms 0ms nim 1.6.8

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 26ms 0.3ms 1.0MB 20ms 0ms nim/clang 1.6.8
nim 1.nim 45ms 1.2ms 0.7MB 33ms 0ms nim 1.6.8

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 500ms 21ms 561.1MB 477ms 100ms kotlin/jvm 17.0.2
nim 1.nim 1576ms 4.4ms 35.2MB 1553ms 10ms nim/clang 1.6.8
nim 1.nim 1655ms 3.7ms 34.6MB 1633ms 3ms nim 1.6.8
kotlin 1.kt 2330ms 9.2ms 138.2MB 3397ms 23ms kotlin/native 1.7.10

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 188ms 3.7ms 221.5MB 170ms 47ms kotlin/jvm 17.0.2
nim 1.nim 339ms 0.5ms 9.9MB 330ms 0ms nim/clang 1.6.8
nim 1.nim 364ms 14ms 9.3MB 353ms 0ms nim 1.6.8
kotlin 1.kt 425ms 5.9ms 38.1MB 613ms 3ms kotlin/native 1.7.10

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 404ms 0.3ms 0.9MB 390ms 0ms nim/clang 1.6.8
nim 2.nim 427ms 0.5ms 1.0MB 420ms 0ms nim 1.6.8
kotlin 1n.kt 537ms 3.4ms 1.1MB 527ms 0ms kotlin/native 1.7.10
kotlin 1.kt 566ms 0.2ms 43.2MB 580ms 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 43ms 1.2ms 1.0MB 33ms 0ms nim/clang 1.6.8
nim 2.nim 45ms 0.8ms 1.0MB 33ms 0ms nim 1.6.8
kotlin 1n.kt 58ms 0.7ms 1.2MB 50ms 0ms kotlin/native 1.7.10
kotlin 1.kt 135ms 0.8ms 43.2MB 157ms 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 525ms 30ms 41.2MB 507ms 0ms nim 1.6.8
nim 1.nim 551ms 31ms 41.0MB 530ms 3ms nim/clang 1.6.8
nim 2.nim 598ms 1.5ms 6.6MB 587ms 0ms nim/clang 1.6.8
nim 2.nim 635ms 1.3ms 6.1MB 627ms 0ms nim 1.6.8

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 127ms 0.8ms 11.1MB 120ms 0ms nim 1.6.8
nim 1.nim 129ms 4.5ms 11.3MB 117ms 0ms nim/clang 1.6.8
nim 2.nim 138ms 0.8ms 3.3MB 123ms 0ms nim/clang 1.6.8
nim 2.nim 151ms 0.4ms 3.0MB 140ms 0ms nim 1.6.8

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
kotlin 2n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 1434ms 9.9ms 207.7MB 1760ms 50ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
kotlin 2n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim 1.6.8
nim 1.nim timeout 0.0ms 0.0MB 0ms 0ms nim/clang 1.6.8

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 2565ms 5.6ms 167.2MB 2520ms 33ms nim 1.6.8
nim 1.nim 2568ms 4.8ms 167.8MB 2523ms 27ms nim/clang 1.6.8
kotlin 1.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/jvm 17.0.2
kotlin 1n.kt timeout 0.0ms 0.0MB 0ms 0ms kotlin/native 1.7.10

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 264ms 0.7ms 16.7MB 247ms 3ms nim 1.6.8
nim 1.nim 264ms 2.3ms 17.0MB 250ms 0ms nim/clang 1.6.8
kotlin 1.kt 1073ms 9.0ms 95.5MB 1470ms 37ms kotlin/jvm 17.0.2
kotlin 1n.kt 4822ms 8.4ms 74.8MB 6053ms 17ms kotlin/native 1.7.10

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 4118ms 1.2ms 1.8MB 4110ms 0ms nim/clang 1.6.8
nim 1.nim 4120ms 4.8ms 1.8MB 4107ms 0ms nim 1.6.8

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1031ms 0.3ms 0.9MB 1017ms 0ms nim 1.6.8
nim 1.nim 1032ms 0.5ms 1.0MB 1017ms 0ms nim/clang 1.6.8

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 260ms 0.7ms 1.0MB 247ms 0ms nim 1.6.8
nim 1.nim 260ms 0.3ms 1.0MB 250ms 0ms nim/clang 1.6.8