Programming Language and compiler
Benchmarks

Kotlin VS Javascript benchmarks

Current benchmark data was generated on Thu May 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 492ms 10ms 578.8MB 590ms 93ms kotlin/jvm 21
javascript 1-m.js 961ms 19ms 189.3MB 1440ms 253ms bun 1.2.11
javascript 1-m.js 1237ms 36ms 250.6MB 2120ms 157ms node 23.11.0
kotlin 1.kt 3846ms 34ms 144.1MB 4020ms 77ms kotlin/native 2.1.20

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 101ms 3.1ms 79.5MB 77ms 30ms bun 1.2.11
kotlin 1.kt 121ms 3.2ms 163.1MB 143ms 33ms kotlin/jvm 21
javascript 1.js 125ms 2.3ms 78.7MB 127ms 27ms node 23.11.0
kotlin 1.kt 204ms 3.4ms 17.6MB 210ms 3ms kotlin/native 2.1.20

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 1592ms 8.1ms 90.4MB 1680ms 50ms node 23.11.0
kotlin 2-m.kt 1966ms 64ms 237.9MB 7327ms 110ms kotlin/jvm 21
kotlin 1.kt 2131ms 19ms 217.3MB 2937ms 73ms kotlin/jvm 21
javascript 1.js 2477ms 15ms 101.1MB 2510ms 60ms bun 1.2.11
kotlin 2-m.kt 4241ms 30ms 21.4MB 14193ms 557ms kotlin/native 2.1.20
kotlin 1.kt timeout 0.0ms 17.4MB 5507ms 27ms kotlin/native 2.1.20

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 157ms 3.2ms 71.9MB 143ms 20ms node 23.11.0
javascript 1.js 198ms 3.1ms 86.6MB 223ms 30ms bun 1.2.11
kotlin 2-m.kt 250ms 1.5ms 21.3MB 833ms 47ms kotlin/native 2.1.20
kotlin 1.kt 387ms 13ms 17.4MB 397ms 0ms kotlin/native 2.1.20
kotlin 1-m.kt 480ms 15ms 74.4MB 1100ms 47ms kotlin/jvm 21
kotlin 2-m.kt 881ms 82ms 95.9MB 3080ms 67ms 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 0.2ms 3.1MB 0ms 0ms kotlin/native 2.1.20
javascript 1.js 13ms 0.3ms 33.4MB 0ms 10ms bun 1.2.11
javascript 1.js 30ms 0.8ms 47.7MB 18ms 2ms node 23.11.0
kotlin 1-m.kt 61ms 0.9ms 47.6MB 78ms 16ms kotlin/jvm 21

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 333ms 15ms 76.1MB 143ms 430ms bun 1.2.11
javascript 1.js 3165ms 250ms 189.3MB 3020ms 1490ms node 23.11.0
kotlin 2-m.kt 4772ms 83ms 444.0MB 14403ms 2467ms kotlin/jvm 21
kotlin 1.kt timeout 0.0ms 404.3MB 15977ms 2973ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 118ms 5.0ms 55.9MB 33ms 90ms bun 1.2.11
javascript 1.js 355ms 3.4ms 80.2MB 323ms 133ms node 23.11.0
kotlin 1-m.kt 2042ms 296ms 229.7MB 6220ms 627ms kotlin/jvm 21
kotlin 2-m.kt 2149ms 29ms 238.8MB 5513ms 630ms kotlin/jvm 21

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 76ms 7.9ms 68.5MB 47ms 23ms bun 1.2.11
javascript 1.js 111ms 1.2ms 75.3MB 100ms 20ms node 23.11.0
kotlin 1-m.kt 779ms 88ms 173.9MB 2120ms 73ms kotlin/jvm 21

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 392ms 3.5ms 236.5MB 337ms 97ms bun 1.2.11
javascript 1.js 688ms 0.9ms 202.5MB 797ms 87ms node 23.11.0
kotlin 1-m.kt 1881ms 40ms 702.6MB 4407ms 157ms kotlin/jvm 21

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 196ms 4.7ms 95.0MB 317ms 33ms kotlin/jvm 21
kotlin 2.kt 197ms 54ms 12.5MB 197ms 3ms kotlin/native 2.1.20
kotlin 2-m.kt 203ms 3.6ms 101.8MB 443ms 37ms kotlin/jvm 21
javascript 2.js 307ms 2.3ms 62.8MB 297ms 13ms node 23.11.0
kotlin 1.kt 359ms 0.8ms 12.4MB 363ms 0ms kotlin/native 2.1.20
javascript 1.js 555ms 1.1ms 60.6MB 540ms 10ms node 23.11.0
javascript 2.js 654ms 7.6ms 121.9MB 707ms 60ms bun 1.2.11
javascript 1.js 824ms 5.1ms 111.6MB 920ms 73ms bun 1.2.11

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2-m.kt 316ms 6.8ms 213.9MB 543ms 50ms kotlin/jvm 21
kotlin 1.kt 342ms 5.5ms 202.7MB 460ms 30ms kotlin/jvm 21
kotlin 2.kt 485ms 11ms 12.4MB 523ms 0ms kotlin/native 2.1.20
javascript 2.js 840ms 2.4ms 68.5MB 830ms 17ms node 23.11.0
kotlin 1.kt 1055ms 17ms 12.5MB 1087ms 3ms kotlin/native 2.1.20
javascript 1.js 1579ms 1.6ms 68.0MB 1563ms 13ms node 23.11.0
javascript 2.js 1820ms 2.5ms 122.2MB 1987ms 77ms bun 1.2.11
javascript 1.js 2446ms 103ms 112.9MB 2770ms 150ms bun 1.2.11

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 2.kt 93ms 1.7ms 12.9MB 87ms 0ms kotlin/native 2.1.20
kotlin 1.kt 122ms 1.5ms 12.8MB 113ms 3ms kotlin/native 2.1.20
kotlin 1-m.kt 150ms 3.8ms 90.8MB 293ms 20ms kotlin/jvm 21
javascript 1.js 161ms 1.1ms 58.0MB 150ms 7ms node 23.11.0
kotlin 2-m.kt 163ms 4.5ms 96.5MB 353ms 27ms kotlin/jvm 21
javascript 2.js 163ms 0.7ms 56.5MB 160ms 7ms node 23.11.0
javascript 1.js 317ms 2.2ms 115.6MB 353ms 77ms bun 1.2.11
javascript 2.js 354ms 4.5ms 125.5MB 377ms 50ms bun 1.2.11

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 406ms 17ms 680.2MB 453ms 90ms kotlin/jvm 21
javascript 1-m.js 487ms 5.6ms 135.7MB 657ms 133ms bun 1.2.11
javascript 1.js 533ms 5.3ms 130.5MB 620ms 57ms node 23.11.0
kotlin 1.kt 1821ms 13ms 89.8MB 1913ms 43ms kotlin/native 2.1.20

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 115ms 2.7ms 87.3MB 100ms 30ms bun 1.2.11
javascript 1.js 158ms 1.6ms 98.3MB 160ms 33ms node 23.11.0
kotlin 1-m.kt 159ms 7.9ms 207.3MB 207ms 40ms kotlin/jvm 21
kotlin 1.kt 259ms 1.7ms 24.9MB 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 350ms 1.7ms 3.5MB 340ms 0ms kotlin/native 2.1.20
kotlin 1.kt 443ms 1.3ms 49.4MB 487ms 13ms kotlin/jvm 21
javascript 6.js 457ms 5.8ms 56.0MB 443ms 10ms node 23.11.0
javascript 6.js 609ms 19ms 45.5MB 600ms 3ms bun 1.2.11

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1n.kt 39ms 0.9ms 3.6MB 30ms 0ms kotlin/native 2.1.20
javascript 6.js 76ms 0.8ms 55.8MB 67ms 3ms node 23.11.0
javascript 6.js 80ms 2.5ms 45.6MB 73ms 3ms bun 1.2.11
kotlin 1-m.kt 119ms 0.7ms 49.7MB 167ms 20ms kotlin/jvm 21

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt 3800ms 74ms 352.9MB 4630ms 117ms kotlin/jvm 21
javascript 3.js 4795ms 24ms 88.0MB 4770ms 27ms node 23.11.0
kotlin 1n.kt timeout 0.0ms 26.3MB 4013ms 1483ms kotlin/native 2.1.20
kotlin 2n.kt timeout 0.0ms 30.8MB 5123ms 127ms kotlin/native 2.1.20

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 984ms 36ms 353.1MB 1740ms 87ms kotlin/jvm 21
javascript 3.js 1040ms 4.3ms 70.7MB 1020ms 13ms node 23.11.0
kotlin 1n.kt timeout 0.0ms 26.6MB 4027ms 1493ms kotlin/native 2.1.20
kotlin 2n.kt timeout 0.0ms 30.9MB 5110ms 130ms kotlin/native 2.1.20

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1.kt timeout 0.0ms 173.5MB 5410ms 47ms kotlin/jvm 21
kotlin 1n.kt timeout 0.0ms 226.8MB 5060ms 130ms kotlin/native 2.1.20

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
kotlin 1-m.kt 842ms 18ms 134.5MB 1290ms 40ms kotlin/jvm 21
kotlin 1n.kt 3207ms 14ms 51.3MB 3277ms 73ms kotlin/native 2.1.20

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2491ms 5.7ms 59.8MB 2493ms 23ms node 23.11.0
javascript 1.js 2807ms 14ms 84.1MB 2820ms 53ms bun 1.2.11
kotlin 1.kt 3072ms 52ms 231.6MB 4040ms 80ms kotlin/jvm 21

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 663ms 0.8ms 57.9MB 673ms 7ms node 23.11.0
javascript 1.js 731ms 8.9ms 84.0MB 730ms 30ms bun 1.2.11
kotlin 1-m.kt 1010ms 43ms 231.7MB 1910ms 67ms kotlin/jvm 21