Programming Language and compiler
Benchmarks

Nim VS Crystal benchmarks

Current benchmark data was generated on Wed Jan 22 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
nim 2.nim 781ms 16ms 34.9MB 757ms 10ms nim 2.2.0
nim 2.nim 959ms 4.6ms 35.2MB 943ms 3ms nim/clang 2.2.0
crystal 1.cr 1316ms 80ms 64.1MB 1290ms 10ms crystal 1.15.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 72ms 1.1ms 5.5MB 60ms 0ms nim 2.2.0
nim 2.nim 91ms 1.4ms 5.8MB 80ms 0ms nim/clang 2.2.0
crystal 1.cr 110ms 9.3ms 10.9MB 100ms 0ms crystal 1.15.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1367ms 11ms 19.8MB 1300ms 50ms crystal 1.15.0
nim 1.nim timeout 0.0ms 545.4MB 2453ms 2093ms nim 2.2.0
nim 1.nim timeout 0.0ms 553.8MB 2483ms 2057ms nim/clang 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 76ms 1.4ms 7.1MB 57ms 7ms crystal 1.15.0
nim 1.nim 4399ms 8.7ms 518.7MB 2090ms 1880ms nim/clang 2.2.0
nim 1.nim 4558ms 9.6ms 518.3MB 2237ms 1890ms nim 2.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 185ms 2.3ms 1.5MB 177ms 0ms nim 2.2.0
nim 2.nim 238ms 0.8ms 1.8MB 227ms 0ms nim/clang 2.2.0
crystal 2.cr 573ms 3.5ms 3.5MB 450ms 107ms crystal 1.15.0
nim 1.nim 578ms 7.8ms 1.8MB 453ms 110ms nim/clang 2.2.0
nim 1.nim 599ms 1.3ms 1.5MB 473ms 110ms nim 2.2.0
crystal 1.cr 720ms 0.6ms 14.6MB 573ms 127ms crystal 1.15.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 20ms 0.3ms 1.5MB 10ms 0ms nim 2.2.0
nim 2.nim 26ms 0.3ms 1.8MB 13ms 0ms nim/clang 2.2.0
nim 1.nim 60ms 0.5ms 1.8MB 37ms 10ms nim/clang 2.2.0
crystal 2.cr 61ms 1.2ms 3.5MB 43ms 7ms crystal 1.15.0
nim 1.nim 62ms 0.1ms 1.5MB 40ms 10ms nim 2.2.0
crystal 1.cr 76ms 0.8ms 4.9MB 53ms 7ms crystal 1.15.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.1ms 0.1ms 1.6MB 0ms 0ms nim 2.2.0
nim 1.nim 1.2ms 0.1ms 1.9MB 0ms 0ms nim/clang 2.2.0
crystal 1.cr 1.9ms 0.2ms 2.9MB 0ms 0ms crystal 1.15.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 977ms 12ms 98.8MB 270ms 683ms nim/clang 2.2.0
nim 1.nim 996ms 26ms 99.2MB 277ms 697ms nim 2.2.0
crystal 1.cr 2547ms 222ms 197.7MB 403ms 490ms crystal 1.15.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 163ms 5.2ms 17.8MB 47ms 100ms nim 2.2.0
nim 1.nim 163ms 3.8ms 18.2MB 33ms 113ms nim/clang 2.2.0
crystal 1.cr 1102ms 0.9ms 36.6MB 47ms 77ms crystal 1.15.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 37ms 1.0ms 2.9MB 23ms 0ms crystal 1.15.0
crystal 1.cr 65ms 1.7ms 3.0MB 57ms 0ms crystal 1.15.0
nim 2.nim 110ms 1.6ms 1.6MB 100ms 0ms nim/clang 2.2.0
nim 2.nim 114ms 0.5ms 1.4MB 103ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 101ms 1.0ms 2.9MB 90ms 0ms crystal 1.15.0
crystal 1.cr 184ms 2.6ms 2.9MB 170ms 0ms crystal 1.15.0
nim 2.nim 323ms 4.9ms 1.6MB 313ms 0ms nim/clang 2.2.0
nim 2.nim 337ms 4.4ms 1.4MB 323ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4987ms 0ms nim/clang 2.2.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 18ms 0.6ms 2.9MB 10ms 0ms crystal 1.15.0
crystal 1.cr 30ms 1.5ms 2.9MB 20ms 0ms crystal 1.15.0
nim 2.nim 49ms 1.1ms 1.5MB 40ms 0ms nim/clang 2.2.0
nim 2.nim 50ms 0.3ms 1.3MB 40ms 0ms nim 2.2.0
nim 1.nim 493ms 4.9ms 1.5MB 480ms 0ms nim/clang 2.2.0
nim 1.nim 519ms 32ms 1.3MB 510ms 0ms nim 2.2.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 314ms 3.9ms 9.2MB 303ms 0ms crystal 1.15.0
nim 1.nim 387ms 2.3ms 4.8MB 373ms 0ms nim/clang 2.2.0
nim 1.nim 577ms 1.3ms 4.7MB 567ms 0ms nim 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 18ms 0.3ms 5.8MB 10ms 0ms crystal 1.15.0
nim 1.nim 18ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.0
nim 1.nim 27ms 1.3ms 1.6MB 20ms 0ms nim 2.2.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 559ms 9.0ms 34.9MB 540ms 7ms nim 2.2.0
nim 1.nim 622ms 12ms 34.7MB 607ms 3ms nim/clang 2.2.0
crystal 1.cr 860ms 29ms 64.1MB 830ms 10ms crystal 1.15.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 117ms 1.1ms 9.6MB 103ms 0ms nim 2.2.0
nim 1.nim 131ms 5.5ms 9.9MB 113ms 0ms nim/clang 2.2.0
crystal 1.cr 178ms 4.4ms 22.0MB 160ms 3ms crystal 1.15.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 319ms 2.1ms 1.8MB 310ms 0ms nim 2.2.0
nim 2.nim 341ms 2.4ms 2.0MB 330ms 0ms nim/clang 2.2.0
crystal 1.cr 342ms 2.4ms 3.3MB 330ms 0ms crystal 1.15.0
crystal 2.cr 342ms 1.6ms 3.3MB 330ms 0ms crystal 1.15.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 35ms 1.0ms 1.8MB 27ms 0ms nim 2.2.0
nim 2.nim 36ms 0.6ms 2.0MB 30ms 0ms nim/clang 2.2.0
crystal 2.cr 37ms 0.7ms 3.3MB 23ms 0ms crystal 1.15.0
crystal 1.cr 38ms 1.4ms 3.3MB 30ms 0ms crystal 1.15.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 276ms 7.5ms 41.5MB 263ms 0ms nim 2.2.0
crystal 2.cr 299ms 3.7ms 8.2MB 287ms 0ms crystal 1.15.0
nim 1.nim 313ms 4.8ms 41.8MB 297ms 0ms nim/clang 2.2.0
crystal 1.cr 419ms 1.3ms 42.8MB 403ms 0ms crystal 1.15.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.2ms 11.5MB 40ms 0ms nim 2.2.0
nim 1.nim 61ms 1.1ms 11.7MB 50ms 0ms nim/clang 2.2.0
crystal 2.cr 75ms 1.4ms 4.4MB 67ms 0ms crystal 1.15.0
crystal 1.cr 89ms 2.6ms 13.0MB 77ms 0ms crystal 1.15.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1621ms 2.5ms 151.6MB 1577ms 23ms nim/clang 2.2.0
nim 1.nim 1646ms 1.9ms 152.0MB 1603ms 23ms nim 2.2.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 0.4ms 17.6MB 160ms 0ms nim/clang 2.2.0
nim 1.nim 175ms 2.7ms 16.5MB 160ms 0ms nim 2.2.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 3573ms 2.3ms 1.6MB 3560ms 0ms nim/clang 2.2.0
nim 1.nim 3597ms 4.0ms 1.4MB 3587ms 0ms nim 2.2.0
crystal 1.cr 3801ms 27ms 4.4MB 3787ms 0ms crystal 1.15.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 895ms 0.4ms 1.5MB 880ms 0ms nim/clang 2.2.0
nim 1.nim 898ms 1.4ms 1.3MB 887ms 0ms nim 2.2.0
crystal 1.cr 955ms 2.5ms 4.3MB 943ms 0ms crystal 1.15.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 226ms 0.5ms 1.5MB 213ms 0ms nim/clang 2.2.0
nim 1.nim 227ms 0.9ms 1.3MB 217ms 0ms nim 2.2.0
crystal 1.cr 245ms 2.9ms 3.8MB 237ms 0ms crystal 1.15.0