Programming Language and compiler
Benchmarks

Crystal VS Haxe benchmarks

Current benchmark data was generated on Mon Jun 23 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
crystal 1.cr 1282ms 30ms 64.2MB 1257ms 10ms crystal 1.16.3
haxe 1.hx 1317ms 11ms 144.0MB 1497ms 70ms haxe/cpp 4.3.6
haxe 2.hx 4420ms 7.8ms 495.1MB 5000ms 247ms haxe/cpp 4.3.6
haxe 1.hx timeout 0.0ms 48.6MB 5657ms 417ms haxe/hl/c 4.3.6
haxe 2.hx timeout 0.0ms 83.0MB 5150ms 673ms haxe/hl/c 4.3.6
haxe 1.hx timeout 0.0ms 50.9MB 7683ms 437ms haxe/hl/jit 1.15.0
haxe 2.hx timeout 0.0ms 131.0MB 7317ms 777ms haxe/hl/jit 1.15.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
haxe 1.hx 90ms 3.6ms 25.8MB 83ms 3ms haxe/cpp 4.3.6
crystal 1.cr 109ms 0.7ms 11.0MB 97ms 0ms crystal 1.16.3
haxe 2.hx 398ms 2.4ms 58.3MB 440ms 23ms haxe/cpp 4.3.6
haxe 1.hx 646ms 9.3ms 8.7MB 603ms 60ms haxe/hl/c 4.3.6
haxe 1.hx 692ms 36ms 11.2MB 753ms 53ms haxe/hl/jit 1.15.0
haxe 2.hx 946ms 20ms 25.2MB 910ms 177ms haxe/hl/jit 1.15.0
haxe 2.hx 1045ms 6.8ms 13.7MB 940ms 160ms haxe/hl/c 4.3.6

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1505ms 22ms 19.9MB 1440ms 53ms crystal 1.16.3

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 85ms 1.6ms 7.1MB 63ms 10ms crystal 1.16.3

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 58ms 1.4ms 6.4MB 43ms 0ms crystal 1.16.3

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 23ms 1.5ms 5.3MB 10ms 0ms crystal 1.16.3

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2481ms 9.0ms 2.9MB 2470ms 0ms crystal 1.16.3

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 213ms 7.6ms 2.9MB 200ms 0ms crystal 1.16.3

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 535ms 2.1ms 3.5MB 447ms 80ms crystal 1.16.3
crystal 1.cr 681ms 1.3ms 14.6MB 573ms 93ms crystal 1.16.3
haxe 1.hx 2388ms 16ms 25.6MB 2313ms 200ms haxe/cpp 4.3.6
haxe 1.hx timeout 0.0ms 3.2MB 4373ms 853ms haxe/hl/c 4.3.6
haxe 1.hx timeout 0.0ms 3.6MB 4387ms 853ms haxe/hl/jit 1.15.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 57ms 0.7ms 3.6MB 40ms 0ms crystal 1.16.3
crystal 1.cr 73ms 0.9ms 4.9MB 57ms 3ms crystal 1.16.3
haxe 1.hx 254ms 3.7ms 25.6MB 223ms 27ms haxe/cpp 4.3.6
haxe 1.hx 651ms 2.0ms 3.4MB 553ms 120ms haxe/hl/c 4.3.6
haxe 1.hx 682ms 5.2ms 3.6MB 593ms 110ms haxe/hl/jit 1.15.0

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
haxe 1.hx 2.1ms 0.3ms 4.4MB 0ms 0ms haxe/cpp 4.3.6
haxe 1.hx 2.2ms 0.4ms 2.9MB 0ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 3.4ms 0.3ms 3.4MB 0ms 0ms haxe/hl/jit 1.15.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2297ms 153ms 300.0MB 313ms 450ms crystal 1.16.3

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1282ms 15ms 53.0MB 33ms 70ms crystal 1.16.3

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 36ms 0.9ms 3.0MB 30ms 0ms crystal 1.16.3
crystal 1.cr 65ms 1.9ms 3.0MB 60ms 0ms crystal 1.16.3
haxe 1.hx 135ms 0.8ms 3.0MB 130ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 136ms 2.8ms 20.5MB 120ms 3ms haxe/cpp 4.3.6
haxe 1.hx 159ms 1.5ms 3.8MB 150ms 0ms haxe/hl/jit 1.15.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 101ms 2.3ms 3.0MB 93ms 0ms crystal 1.16.3
crystal 1.cr 186ms 0.8ms 3.0MB 180ms 0ms crystal 1.16.3
haxe 1.hx 380ms 3.8ms 25.5MB 360ms 7ms haxe/cpp 4.3.6
haxe 1.hx 396ms 1.8ms 3.1MB 387ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 460ms 18ms 3.8MB 450ms 0ms haxe/hl/jit 1.15.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 19ms 1.1ms 3.0MB 10ms 0ms crystal 1.16.3
crystal 1.cr 30ms 0.6ms 3.0MB 20ms 0ms crystal 1.16.3
haxe 1.hx 64ms 1.4ms 12.3MB 53ms 0ms haxe/cpp 4.3.6
haxe 1.hx 68ms 1.4ms 3.0MB 60ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 81ms 0.9ms 3.6MB 70ms 0ms haxe/hl/jit 1.15.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 316ms 2.7ms 9.3MB 303ms 0ms crystal 1.16.3

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 17ms 0.6ms 6.1MB 10ms 0ms crystal 1.16.3

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 880ms 16ms 64.2MB 857ms 10ms crystal 1.16.3
haxe 1.hx 922ms 7.4ms 95.0MB 1027ms 47ms haxe/cpp 4.3.6
haxe 1.hx timeout 0.0ms 32.6MB 4987ms 523ms haxe/hl/c 4.3.6
haxe 1.hx timeout 0.0ms 55.1MB 5913ms 467ms haxe/hl/jit 1.15.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 173ms 3.0ms 22.2MB 157ms 0ms crystal 1.16.3
haxe 1.hx 174ms 2.4ms 26.6MB 173ms 13ms haxe/cpp 4.3.6
haxe 1.hx 1325ms 25ms 20.3MB 1353ms 123ms haxe/hl/jit 1.15.0
haxe 1.hx 1377ms 28ms 10.8MB 1313ms 153ms haxe/hl/c 4.3.6

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 342ms 1.3ms 3.3MB 330ms 0ms crystal 1.16.3
crystal 1.cr 344ms 2.9ms 3.3MB 333ms 0ms crystal 1.16.3
haxe 2.hx 856ms 3.7ms 3.0MB 847ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 1062ms 2.4ms 3.0MB 1053ms 0ms haxe/hl/c 4.3.6
haxe 3.hx 1395ms 8.8ms 25.6MB 1580ms 30ms haxe/cpp 4.3.6
haxe 2.hx 2408ms 11ms 3.6MB 2397ms 0ms haxe/hl/jit 1.15.0
haxe 1.hx 2475ms 15ms 3.6MB 2467ms 0ms haxe/hl/jit 1.15.0
haxe 1.hx timeout 0.0ms 4.4MB 4990ms 0ms haxe/cpp 4.3.6
haxe 2.hx timeout 0.0ms 4.4MB 4990ms 0ms haxe/cpp 4.3.6
haxe 3.hx timeout 0.0ms 3.4MB 3933ms 1573ms haxe/hl/c 4.3.6
haxe 3.hx timeout 0.0ms 3.9MB 4137ms 1327ms haxe/hl/jit 1.15.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 38ms 0.4ms 3.3MB 30ms 0ms crystal 1.16.3
crystal 1.cr 38ms 1.4ms 3.3MB 30ms 0ms crystal 1.16.3
haxe 2.hx 88ms 0.0ms 3.0MB 80ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 111ms 2.1ms 3.0MB 103ms 0ms haxe/hl/c 4.3.6
haxe 3.hx 156ms 2.4ms 25.6MB 157ms 10ms haxe/cpp 4.3.6
haxe 2.hx 245ms 0.4ms 3.6MB 237ms 0ms haxe/hl/jit 1.15.0
haxe 1.hx 259ms 3.6ms 3.6MB 247ms 0ms haxe/hl/jit 1.15.0
haxe 2.hx 674ms 3.1ms 4.4MB 667ms 0ms haxe/cpp 4.3.6
haxe 3.hx 679ms 4.5ms 3.3MB 513ms 223ms haxe/hl/c 4.3.6
haxe 3.hx 800ms 16ms 3.8MB 657ms 203ms haxe/hl/jit 1.15.0
haxe 1.hx 811ms 7.7ms 4.6MB 803ms 0ms haxe/cpp 4.3.6

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 350ms 2.1ms 8.3MB 340ms 0ms crystal 1.16.3
crystal 1.cr 432ms 2.5ms 42.9MB 420ms 0ms crystal 1.16.3

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 89ms 2.4ms 4.5MB 80ms 0ms crystal 1.16.3
crystal 1.cr 92ms 3.7ms 13.2MB 83ms 0ms crystal 1.16.3

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1928ms 26ms 6.3MB 1897ms 17ms crystal 1.16.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 447ms 9.3ms 4.9MB 433ms 0ms crystal 1.16.3

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 3760ms 10ms 4.5MB 3747ms 0ms crystal 1.16.3
haxe 1.hx 3907ms 10ms 3.3MB 3893ms 0ms haxe/hl/c 4.3.6
haxe 1.hx timeout 0.0ms 7.0MB 4990ms 0ms haxe/cpp 4.3.6
haxe 1.hx timeout 0.0ms 3.9MB 4990ms 0ms haxe/hl/jit 1.15.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 949ms 7.6ms 4.4MB 940ms 0ms crystal 1.16.3
haxe 1.hx 984ms 3.3ms 3.1MB 970ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 2400ms 1.8ms 6.6MB 2390ms 0ms haxe/cpp 4.3.6
haxe 1.hx timeout 0.0ms 3.8MB 4990ms 0ms haxe/hl/jit 1.15.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 241ms 5.4ms 3.8MB 233ms 0ms crystal 1.16.3
haxe 1.hx 251ms 2.2ms 3.1MB 240ms 0ms haxe/hl/c 4.3.6
haxe 1.hx 610ms 11ms 5.4MB 597ms 0ms haxe/cpp 4.3.6
haxe 1.hx 2306ms 10ms 3.8MB 2297ms 0ms haxe/hl/jit 1.15.0