Programming Language and compiler
Benchmarks

V VS Nim 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
nim 2.nim 825ms 37ms 34.9MB 807ms 7ms nim 2.2.4
v 1.v 864ms 25ms 28.9MB 853ms 0ms v/clang+gc 0.4.11
nim 2.nim 999ms 22ms 34.7MB 980ms 7ms nim/clang 2.2.4
v 1.v 2188ms 3.5ms 2086.6MB 1307ms 867ms v/clang 0.4.11

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 71ms 0.8ms 4.6MB 60ms 0ms v/clang+gc 0.4.11
nim 2.nim 77ms 1.9ms 5.5MB 67ms 0ms nim 2.2.4
nim 2.nim 93ms 2.8ms 5.8MB 83ms 0ms nim/clang 2.2.4
v 1.v 205ms 4.7ms 198.0MB 110ms 83ms v/clang 0.4.11

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim timeout 0.0ms 568.3MB 2650ms 1870ms nim 2.2.4
nim 1.nim timeout 0.0ms 572.7MB 2573ms 1947ms nim/clang 2.2.4
v 1.v timeout 0.0ms 17.5MB 8343ms 10803ms v/clang 0.4.11
v 1.v timeout 0.0ms 17.6MB 8653ms 10620ms v/clang+gc 0.4.11

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1-m.v 1345ms 36ms 9.8MB 2223ms 2887ms v/clang 0.4.11
v 1-m.v 1657ms 68ms 10.4MB 2843ms 3423ms v/clang+gc 0.4.11
nim 1.nim 4147ms 10.0ms 519.8MB 2113ms 1603ms nim/clang 2.2.4
nim 1.nim 4190ms 13ms 518.2MB 2160ms 1600ms nim 2.2.4

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v timeout 0.0ms 8.1MB 4990ms 0ms v/clang+gc 0.4.11

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v timeout 0.0ms 4.5MB 4990ms 0ms v/clang+gc 0.4.11

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 2201ms 5.0ms 1.9MB 2193ms 0ms v/clang+gc 0.4.11
v 1.v 2314ms 97ms 1.1MB 2307ms 0ms v/clang 0.4.11

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 188ms 2.1ms 1.9MB 180ms 0ms v/clang+gc 0.4.11
v 1.v 193ms 1.7ms 1.1MB 183ms 0ms v/clang 0.4.11

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 188ms 2.2ms 1.5MB 180ms 0ms nim 2.2.4
nim 2.nim 240ms 0.1ms 1.8MB 230ms 0ms nim/clang 2.2.4
v 1.v 505ms 3.4ms 1.3MB 497ms 0ms v/clang 0.4.11
v 1.v 528ms 4.5ms 2.1MB 513ms 0ms v/clang+gc 0.4.11
nim 1.nim 542ms 2.9ms 1.9MB 450ms 80ms nim/clang 2.2.4
nim 1.nim 561ms 3.3ms 1.5MB 470ms 77ms nim 2.2.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 21ms 0.1ms 1.5MB 10ms 0ms nim 2.2.4
nim 2.nim 27ms 1.0ms 1.8MB 20ms 0ms nim/clang 2.2.4
v 1.v 53ms 0.7ms 1.3MB 47ms 0ms v/clang 0.4.11
v 1.v 56ms 2.1ms 2.1MB 50ms 0ms v/clang+gc 0.4.11
nim 1.nim 57ms 0.5ms 1.8MB 37ms 3ms nim/clang 2.2.4
nim 1.nim 59ms 0.6ms 1.5MB 40ms 7ms nim 2.2.4

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.0ms 0.0ms 1.6MB 0ms 0ms nim 2.2.4
v 1.v 1.0ms 0.0ms 1.4MB 0ms 0ms v/clang 0.4.11
nim 1.nim 1.1ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.4
v 1.v 1.3ms 0.1ms 1.9MB 0ms 0ms v/clang+gc 0.4.11

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 113ms 2.8ms 1.8MB 107ms 0ms nim/clang 2.2.4
nim 2.nim 116ms 1.5ms 1.4MB 110ms 0ms nim 2.2.4
v 1.v 262ms 4.6ms 2.1MB 253ms 0ms v/clang+gc 0.4.11
v 1.v 266ms 2.4ms 1.3MB 260ms 0ms v/clang 0.4.11
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 328ms 6.2ms 1.6MB 317ms 0ms nim/clang 2.2.4
nim 2.nim 336ms 4.0ms 1.4MB 330ms 0ms nim 2.2.4
v 1.v 771ms 2.0ms 2.1MB 760ms 0ms v/clang+gc 0.4.11
v 1.v 789ms 22ms 1.3MB 780ms 0ms v/clang 0.4.11
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.4
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 48ms 0.0ms 1.8MB 40ms 0ms nim/clang 2.2.4
nim 2.nim 50ms 0.4ms 1.3MB 40ms 0ms nim 2.2.4
v 1.v 91ms 1.3ms 1.3MB 83ms 0ms v/clang 0.4.11
v 1.v 103ms 2.6ms 2.1MB 97ms 0ms v/clang+gc 0.4.11
nim 1.nim 478ms 6.6ms 1.5MB 470ms 0ms nim/clang 2.2.4
nim 1.nim 483ms 14ms 1.3MB 477ms 0ms nim 2.2.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 312ms 1.0ms 2.3MB 300ms 0ms v/clang+gc 0.4.11
v 1.v 312ms 2.1ms 1.6MB 300ms 0ms v/clang 0.4.11
nim 2.nim 321ms 2.4ms 1.8MB 310ms 0ms nim 2.2.4
nim 2.nim 344ms 1.2ms 1.9MB 330ms 0ms nim/clang 2.2.4

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 1.v 33ms 0.1ms 2.3MB 20ms 0ms v/clang+gc 0.4.11
v 1.v 34ms 1.0ms 1.6MB 27ms 0ms v/clang 0.4.11
nim 2.nim 34ms 0.6ms 1.8MB 30ms 0ms nim 2.2.4
nim 2.nim 38ms 1.4ms 2.0MB 30ms 0ms nim/clang 2.2.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 306ms 36ms 41.5MB 297ms 0ms nim 2.2.4
v 1.v 329ms 14ms 40.3MB 313ms 0ms v/clang 0.4.11
v 2.v 330ms 2.6ms 6.1MB 320ms 0ms v/clang 0.4.11
v 2.v 330ms 5.1ms 6.9MB 320ms 0ms v/clang+gc 0.4.11
nim 1.nim 334ms 13ms 41.8MB 323ms 0ms nim/clang 2.2.4
v 1.v 447ms 7.3ms 60.6MB 430ms 0ms v/clang+gc 0.4.11

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.1ms 11.5MB 40ms 0ms nim 2.2.4
v 1.v 61ms 2.0ms 11.1MB 50ms 0ms v/clang 0.4.11
v 1.v 62ms 2.1ms 11.9MB 50ms 0ms v/clang+gc 0.4.11
nim 1.nim 67ms 7.6ms 11.8MB 60ms 0ms nim/clang 2.2.4
v 2.v 82ms 2.0ms 2.4MB 73ms 0ms v/clang 0.4.11
v 2.v 83ms 1.6ms 3.1MB 70ms 0ms v/clang+gc 0.4.11

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 2.v 3216ms 15ms 3.5MB 3197ms 7ms v/clang+gc 0.4.11

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
v 2.v 801ms 11ms 3.1MB 790ms 0ms v/clang+gc 0.4.11

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1646ms 3.9ms 152.4MB 1610ms 23ms nim/clang 2.2.4
nim 1.nim 1674ms 7.4ms 151.5MB 1640ms 20ms nim 2.2.4
v 1.v timeout 0.0ms 83.1MB 4980ms 10ms v/clang+gc 0.4.11

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 3.1ms 17.6MB 160ms 0ms nim/clang 2.2.4
nim 1.nim 178ms 1.7ms 17.4MB 160ms 0ms nim 2.2.4
v 1.v 3540ms 93ms 26.0MB 3523ms 3ms v/clang+gc 0.4.11

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 3589ms 1.4ms 2.0MB 3580ms 0ms nim/clang 2.2.4
nim 1.nim 3601ms 3.5ms 1.4MB 3593ms 0ms nim 2.2.4
v 1.v timeout 0.0ms 1.6MB 4990ms 0ms v/clang 0.4.11
v 1.v timeout 0.0ms 2.8MB 4990ms 0ms v/clang+gc 0.4.11

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 899ms 0.7ms 1.5MB 890ms 0ms nim/clang 2.2.4
nim 1.nim 903ms 1.2ms 1.3MB 893ms 0ms nim 2.2.4
v 1.v 1286ms 8.5ms 1.5MB 1277ms 0ms v/clang 0.4.11
v 1.v 1326ms 6.9ms 2.5MB 1313ms 0ms v/clang+gc 0.4.11

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 227ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.4
nim 1.nim 228ms 1.8ms 1.3MB 220ms 0ms nim 2.2.4
v 1.v 326ms 0.7ms 1.9MB 320ms 0ms v/clang 0.4.11
v 1.v 334ms 0.7ms 2.5MB 320ms 0ms v/clang+gc 0.4.11