Programming Language and compiler
Benchmarks

Javascript VS Crystal benchmarks

Current benchmark data was generated on Sun Jun 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
javascript 1-m.js 907ms 13ms 181.8MB 1350ms 187ms bun 1.2.15
javascript 1.js 1049ms 5.1ms 469.9MB 970ms 217ms node 24.1.0
crystal 1.cr 1219ms 8.5ms 64.2MB 1200ms 10ms crystal 1.16.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 100ms 1.6ms 77.6MB 80ms 27ms bun 1.2.15
crystal 1.cr 105ms 2.8ms 10.9MB 97ms 0ms crystal 1.16.3
javascript 1.js 123ms 1.2ms 80.3MB 127ms 20ms node 24.1.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1500ms 42ms 19.9MB 1437ms 53ms crystal 1.16.3
javascript 1.js 1597ms 7.0ms 189.2MB 1570ms 100ms node 24.1.0
javascript 1.js 2458ms 46ms 104.4MB 2503ms 70ms bun 1.2.15

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 81ms 2.1ms 7.1MB 60ms 10ms crystal 1.16.3
javascript 1.js 158ms 0.8ms 74.8MB 143ms 27ms node 24.1.0
javascript 1.js 199ms 1.7ms 87.9MB 237ms 37ms bun 1.2.15

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 57ms 0.6ms 6.5MB 40ms 0ms crystal 1.16.3
javascript 1.js 278ms 1.0ms 66.7MB 293ms 23ms node 24.1.0
javascript 1.js 517ms 2.3ms 76.2MB 493ms 17ms bun 1.2.15

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 22ms 1.4ms 5.3MB 10ms 0ms crystal 1.16.3
javascript 1.js 120ms 1.1ms 62.8MB 110ms 13ms node 24.1.0
javascript 1.js 508ms 1.3ms 65.6MB 487ms 20ms bun 1.2.15

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1.9ms 0.2ms 2.9MB 0ms 0ms crystal 1.16.3
javascript 1.js 12ms 0.4ms 31.5MB 0ms 0ms bun 1.2.15
javascript 1.js 30ms 0.6ms 49.8MB 18ms 6ms node 24.1.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.bun.js 251ms 4.8ms 79.9MB 130ms 317ms bun 1.2.15
javascript 1.js 2719ms 485ms 296.0MB 2637ms 1240ms node 24.1.0
crystal 1.cr 2991ms 528ms 240.7MB 293ms 427ms crystal 1.16.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.bun.js 87ms 3.8ms 55.5MB 37ms 67ms bun 1.2.15
javascript 1.js 342ms 4.1ms 84.0MB 330ms 123ms node 24.1.0
crystal 1.cr 1293ms 19ms 53.3MB 27ms 77ms crystal 1.16.3

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 71ms 1.1ms 67.8MB 40ms 20ms bun 1.2.15
javascript 1.js 102ms 0.9ms 74.9MB 80ms 20ms node 24.1.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 386ms 2.1ms 235.8MB 333ms 97ms bun 1.2.15
javascript 1.js 575ms 1.9ms 203.2MB 583ms 123ms node 24.1.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 35ms 0.6ms 3.0MB 30ms 0ms crystal 1.16.3
crystal 1.cr 65ms 1.6ms 3.0MB 57ms 0ms crystal 1.16.3
javascript 2.js 304ms 2.7ms 64.1MB 293ms 13ms node 24.1.0
javascript 1.js 566ms 6.6ms 62.7MB 553ms 7ms node 24.1.0
javascript 2.js 634ms 5.2ms 123.1MB 710ms 43ms bun 1.2.15
javascript 1.js 830ms 15ms 106.3MB 903ms 87ms bun 1.2.15

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 99ms 1.4ms 3.0MB 90ms 0ms crystal 1.16.3
crystal 1.cr 191ms 5.3ms 3.0MB 183ms 0ms crystal 1.16.3
javascript 2.js 833ms 3.9ms 71.4MB 820ms 17ms node 24.1.0
javascript 1.js 1610ms 3.9ms 69.4MB 1593ms 10ms node 24.1.0
javascript 2.js 1783ms 10.0ms 124.1MB 1957ms 77ms bun 1.2.15
javascript 1.js 2362ms 4.9ms 106.4MB 2650ms 160ms bun 1.2.15

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 17ms 0.5ms 3.0MB 10ms 0ms crystal 1.16.3
crystal 1.cr 30ms 0.8ms 3.0MB 20ms 0ms crystal 1.16.3
javascript 2.js 164ms 1.8ms 58.7MB 153ms 10ms node 24.1.0
javascript 1.js 167ms 0.2ms 59.9MB 160ms 3ms node 24.1.0
javascript 1.js 318ms 5.1ms 130.3MB 357ms 77ms bun 1.2.15
javascript 2.js 347ms 3.8ms 125.4MB 380ms 47ms bun 1.2.15

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1-m.js 463ms 1.1ms 136.5MB 613ms 113ms bun 1.2.15
javascript 1.js 558ms 2.7ms 230.3MB 553ms 113ms node 24.1.0
crystal 1.cr 828ms 9.1ms 64.2MB 810ms 10ms crystal 1.16.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 114ms 2.2ms 85.0MB 100ms 30ms bun 1.2.15
javascript 1.js 156ms 1.2ms 100.3MB 150ms 33ms node 24.1.0
crystal 1.cr 172ms 4.4ms 22.3MB 160ms 0ms crystal 1.16.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 343ms 2.0ms 3.3MB 333ms 0ms crystal 1.16.3
crystal 1.cr 345ms 2.9ms 3.4MB 337ms 0ms crystal 1.16.3
javascript 6.js 456ms 3.2ms 57.9MB 447ms 7ms node 24.1.0
javascript 6.js 597ms 2.9ms 45.0MB 600ms 0ms bun 1.2.15

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 38ms 1.3ms 3.3MB 30ms 0ms crystal 1.16.3
crystal 2.cr 38ms 0.6ms 3.3MB 30ms 0ms crystal 1.16.3
javascript 6.js 78ms 2.2ms 58.2MB 67ms 7ms node 24.1.0
javascript 6.js 80ms 0.6ms 45.0MB 90ms 3ms bun 1.2.15

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 2575ms 7.6ms 62.2MB 2580ms 13ms node 24.1.0
javascript 1.js 2822ms 6.0ms 82.3MB 2837ms 43ms bun 1.2.15

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 1.js 686ms 6.9ms 58.8MB 690ms 10ms node 24.1.0
javascript 1.js 736ms 1.2ms 82.1MB 730ms 33ms bun 1.2.15

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1947ms 50ms 6.3MB 1917ms 20ms crystal 1.16.3
javascript 3.js 4837ms 44ms 121.8MB 4787ms 47ms node 24.1.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 450ms 9.9ms 5.0MB 437ms 0ms crystal 1.16.3
javascript 3.js 1043ms 5.1ms 73.1MB 1020ms 17ms node 24.1.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 2185ms 14ms 119.3MB 8240ms 53ms node 24.1.0
crystal 1.cr 3757ms 8.8ms 4.6MB 3743ms 0ms crystal 1.16.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
javascript 6-m.js 653ms 1.5ms 117.6MB 2320ms 57ms node 24.1.0
crystal 1.cr 942ms 1.3ms 4.4MB 930ms 0ms crystal 1.16.3

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 240ms 1.7ms 3.9MB 230ms 0ms crystal 1.16.3
javascript 6-m.js 270ms 2.9ms 117.4MB 843ms 47ms node 24.1.0