Programming Language and compiler
Benchmarks

Crystal VS V benchmarks

Current benchmark data was generated on Sat Mar 29 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
v 1.v 775ms 18ms 28.8MB 760ms 0ms v/clang+gc 0.4.10
crystal 1.cr 1256ms 14ms 64.0MB 1233ms 7ms crystal 1.15.1
v 1.v 2271ms 9.2ms 2086.6MB 1340ms 907ms v/clang 0.4.10

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 71ms 1.9ms 4.6MB 60ms 0ms v/clang+gc 0.4.10
crystal 1.cr 104ms 3.0ms 10.9MB 90ms 0ms crystal 1.15.1
v 1.v 216ms 1.5ms 198.0MB 120ms 80ms v/clang 0.4.10

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1216ms 13ms 19.6MB 1143ms 53ms crystal 1.15.1
v 1.v timeout 0.0ms 17.6MB 8583ms 10733ms v/clang 0.4.10
v 1.v timeout 0.0ms 18.8MB 8477ms 10720ms v/clang+gc 0.4.10

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 71ms 1.5ms 7.0MB 43ms 10ms crystal 1.15.1
v 1-m.v 1392ms 66ms 10.4MB 2323ms 2910ms v/clang+gc 0.4.10
v 1-m.v 1399ms 66ms 9.6MB 2357ms 2930ms v/clang 0.4.10

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 58ms 0.5ms 6.4MB 43ms 0ms crystal 1.15.1
v 1.v timeout 0.0ms 8.1MB 4990ms 0ms v/clang+gc 0.4.10

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 22ms 1.6ms 5.0MB 10ms 0ms crystal 1.15.1
v 1.v timeout 0.0ms 4.8MB 4990ms 0ms v/clang+gc 0.4.10

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 2259ms 3.9ms 1.1MB 2250ms 0ms v/clang 0.4.10
v 1.v 2261ms 108ms 1.9MB 2253ms 0ms v/clang+gc 0.4.10
crystal 1.cr 2498ms 7.0ms 2.8MB 2487ms 0ms crystal 1.15.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 194ms 10ms 1.9MB 187ms 0ms v/clang+gc 0.4.10
v 1.v 194ms 1.4ms 1.1MB 187ms 0ms v/clang 0.4.10
crystal 1.cr 207ms 2.8ms 2.9MB 200ms 0ms crystal 1.15.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 497ms 1.9ms 1.3MB 487ms 0ms v/clang 0.4.10
v 1.v 525ms 2.5ms 2.1MB 513ms 0ms v/clang+gc 0.4.10
crystal 2.cr 557ms 5.8ms 3.4MB 460ms 77ms crystal 1.15.1
crystal 1.cr 698ms 1.4ms 14.4MB 580ms 107ms crystal 1.15.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 54ms 1.8ms 1.3MB 43ms 0ms v/clang 0.4.10
v 1.v 56ms 0.9ms 2.1MB 50ms 0ms v/clang+gc 0.4.10
crystal 2.cr 59ms 0.6ms 3.5MB 43ms 0ms crystal 1.15.1
crystal 1.cr 75ms 1.4ms 4.8MB 53ms 10ms crystal 1.15.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 1.0ms 0.1ms 1.4MB 0ms 0ms v/clang 0.4.10
v 1.v 1.4ms 0.0ms 1.9MB 0ms 0ms v/clang+gc 0.4.10
crystal 1.cr 2.0ms 0.2ms 2.9MB 0ms 0ms crystal 1.15.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 2484ms 156ms 256.0MB 320ms 500ms crystal 1.15.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1251ms 108ms 59.4MB 30ms 80ms crystal 1.15.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 37ms 0.6ms 2.9MB 30ms 0ms crystal 1.15.1
crystal 1.cr 66ms 1.0ms 2.9MB 60ms 0ms crystal 1.15.1
v 1.v 244ms 3.0ms 1.3MB 233ms 0ms v/clang 0.4.10
v 1.v 262ms 5.6ms 2.1MB 253ms 0ms v/clang+gc 0.4.10

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 100ms 2.3ms 2.9MB 90ms 0ms crystal 1.15.1
crystal 1.cr 186ms 3.7ms 2.9MB 173ms 0ms crystal 1.15.1
v 1.v 719ms 5.4ms 1.3MB 707ms 0ms v/clang 0.4.10
v 1.v 782ms 14ms 2.1MB 773ms 0ms v/clang+gc 0.4.10

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 0-unsafe.cr 18ms 0.8ms 2.9MB 10ms 0ms crystal 1.15.1
crystal 1.cr 32ms 1.0ms 2.9MB 20ms 0ms crystal 1.15.1
v 1.v 92ms 3.4ms 1.3MB 83ms 0ms v/clang 0.4.10
v 1.v 101ms 2.3ms 2.1MB 90ms 0ms v/clang+gc 0.4.10

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 313ms 0.1ms 9.0MB 300ms 0ms crystal 1.15.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 18ms 0.5ms 6.3MB 10ms 0ms crystal 1.15.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 847ms 17ms 64.0MB 823ms 10ms crystal 1.15.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 156ms 3.3ms 22.2MB 140ms 0ms crystal 1.15.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 312ms 0.7ms 1.6MB 300ms 0ms v/clang 0.4.10
v 1.v 312ms 0.6ms 2.3MB 300ms 0ms v/clang+gc 0.4.10
crystal 2.cr 343ms 2.0ms 3.1MB 333ms 0ms crystal 1.15.1
crystal 1.cr 345ms 1.8ms 3.1MB 337ms 0ms crystal 1.15.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 34ms 0.6ms 2.3MB 27ms 0ms v/clang+gc 0.4.10
v 1.v 34ms 0.3ms 1.6MB 27ms 0ms v/clang 0.4.10
crystal 1.cr 38ms 1.2ms 3.1MB 30ms 0ms crystal 1.15.1
crystal 2.cr 39ms 0.8ms 3.1MB 30ms 0ms crystal 1.15.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 2.cr 300ms 2.7ms 8.1MB 290ms 0ms crystal 1.15.1
v 1.v 320ms 5.0ms 60.7MB 307ms 0ms v/clang+gc 0.4.10
v 1.v 328ms 9.1ms 40.2MB 310ms 0ms v/clang 0.4.10
v 2.v 333ms 3.1ms 6.9MB 323ms 0ms v/clang+gc 0.4.10
v 2.v 343ms 3.2ms 6.1MB 333ms 0ms v/clang 0.4.10
crystal 1.cr 424ms 4.1ms 42.3MB 413ms 0ms crystal 1.15.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 63ms 4.0ms 11.7MB 53ms 0ms v/clang+gc 0.4.10
v 1.v 64ms 0.5ms 11.0MB 50ms 0ms v/clang 0.4.10
crystal 2.cr 77ms 0.8ms 4.4MB 70ms 0ms crystal 1.15.1
v 2.v 82ms 1.7ms 3.1MB 73ms 0ms v/clang+gc 0.4.10
v 2.v 85ms 1.6ms 2.5MB 77ms 0ms v/clang 0.4.10
crystal 1.cr 94ms 1.2ms 13.0MB 80ms 0ms crystal 1.15.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 1888ms 51ms 6.2MB 1860ms 13ms crystal 1.15.1
v 2.v 3233ms 26ms 3.3MB 3217ms 3ms v/clang+gc 0.4.10

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 458ms 11ms 4.9MB 447ms 0ms crystal 1.15.1
v 2.v 784ms 8.2ms 2.6MB 770ms 0ms v/clang+gc 0.4.10

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 3796ms 8.8ms 4.4MB 3783ms 0ms crystal 1.15.1
v 1.v timeout 0.0ms 1.6MB 4990ms 0ms v/clang 0.4.10
v 1.v timeout 0.0ms 2.6MB 4990ms 0ms v/clang+gc 0.4.10

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 955ms 4.2ms 4.3MB 943ms 0ms crystal 1.15.1
v 1.v 1285ms 7.7ms 1.5MB 1277ms 0ms v/clang 0.4.10
v 1.v 1324ms 4.2ms 2.5MB 1313ms 0ms v/clang+gc 0.4.10

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
crystal 1.cr 243ms 3.1ms 3.8MB 233ms 0ms crystal 1.15.1
v 1.v 326ms 2.0ms 1.5MB 317ms 0ms v/clang 0.4.10
v 1.v 330ms 2.0ms 2.5MB 320ms 0ms v/clang+gc 0.4.10