Programming Language and compiler
Benchmarks

D VS Zig benchmarks

Current benchmark data was generated on Tue Mar 25 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
d 1.d 1796ms 1.6ms 312.6MB 1770ms 33ms ldc2 1.40.1
zig 1.zig 1906ms 32ms 49.0MB 1873ms 17ms zig 0.14.0
d 1.d 2825ms 142ms 314.8MB 3023ms 47ms dmd 2.110.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 153ms 1.1ms 7.0MB 140ms 0ms zig 0.14.0
d 1.d 164ms 2.0ms 209.8MB 140ms 13ms ldc2 1.40.1
d 1.d 231ms 4.2ms 211.8MB 203ms 10ms dmd 2.110.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d timeout 0.0ms 17.7MB 4967ms 23ms dmd 2.110.0
d 1.d timeout 0.0ms 16.5MB 4963ms 20ms ldc2 1.40.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1032ms 16ms 12.2MB 1010ms 7ms ldc2 1.40.1
d 1.d 1329ms 7.9ms 14.5MB 1303ms 13ms dmd 2.110.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2275ms 0.2ms 2.5MB 2243ms 17ms zig 0.14.0
d 1.d 2558ms 2.8ms 8.0MB 2547ms 0ms ldc2 1.40.1
d 1.d 2909ms 6.1ms 10.4MB 2893ms 3ms dmd 2.110.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 384ms 2.2ms 1.9MB 370ms 3ms zig 0.14.0
d 1.d 442ms 0.2ms 8.1MB 430ms 0ms ldc2 1.40.1
d 1.d 527ms 0.5ms 10.2MB 520ms 0ms dmd 2.110.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 374ms 3.2ms 2.9MB 1423ms 0ms ldc2 1.40.1
zig 2-m.zig 637ms 0.7ms 1.4MB 2403ms 0ms zig 0.14.0
d 2-im.d 1118ms 5.5ms 3.1MB 4320ms 0ms ldc2 1.40.1
d 1-i.d 1486ms 1.8ms 2.9MB 1480ms 0ms ldc2 1.40.1
zig 3-i.zig 1766ms 4.1ms 1.0MB 1753ms 0ms zig 0.14.0
zig 1.zig 2713ms 3.8ms 1.0MB 2707ms 0ms zig 0.14.0
d 1.d 3116ms 13ms 2.9MB 3107ms 0ms ldc2 1.40.1
d 2-i.d 3239ms 1.2ms 2.9MB 3230ms 0ms ldc2 1.40.1
d 1.d 3554ms 9.4ms 4.6MB 3543ms 0ms dmd 2.110.0
d 1-im.d 4461ms 10ms 4.8MB 17470ms 7ms dmd 2.110.0
d 1-i.d timeout 0.0ms 4.5MB 4990ms 0ms dmd 2.110.0
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.110.0
d 2-im.d timeout 0.0ms 4.9MB 19733ms 3ms dmd 2.110.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 37ms 0.1ms 3.0MB 110ms 0ms ldc2 1.40.1
zig 2-m.zig 60ms 0.8ms 1.4MB 200ms 0ms zig 0.14.0
d 2-im.d 98ms 2.1ms 3.1MB 350ms 0ms ldc2 1.40.1
d 1-i.d 126ms 2.3ms 2.9MB 120ms 0ms ldc2 1.40.1
zig 3-i.zig 148ms 0.2ms 1.0MB 140ms 0ms zig 0.14.0
zig 1.zig 230ms 0.3ms 1.0MB 220ms 0ms zig 0.14.0
d 1.d 265ms 2.7ms 2.9MB 257ms 0ms ldc2 1.40.1
d 2-i.d 268ms 0.7ms 2.9MB 260ms 0ms ldc2 1.40.1
d 1.d 297ms 1.1ms 4.6MB 290ms 0ms dmd 2.110.0
d 1-im.d 376ms 5.0ms 4.9MB 1430ms 0ms dmd 2.110.0
d 2-im.d 526ms 1.6ms 4.9MB 2010ms 0ms dmd 2.110.0
d 1-i.d 857ms 5.5ms 4.5MB 847ms 0ms dmd 2.110.0
d 2-i.d 1387ms 14ms 4.6MB 1377ms 0ms dmd 2.110.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 88ms 1.2ms 1.0MB 80ms 0ms zig 0.14.0
d 1.d 194ms 1.4ms 49.1MB 180ms 0ms ldc2 1.40.1
d 1.d 628ms 6.9ms 45.2MB 613ms 7ms dmd 2.110.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 11ms 0.8ms 1.0MB 0ms 0ms zig 0.14.0
d 1.d 25ms 1.4ms 11.1MB 17ms 0ms ldc2 1.40.1
d 1.d 67ms 1.1ms 11.1MB 60ms 0ms dmd 2.110.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 1.0ms 0.0ms 1.1MB 0ms 0ms zig 0.14.0
d 1.d 1.6ms 0.1ms 3.0MB 0ms 0ms ldc2 1.40.1
d 1.d 2.2ms 0.3ms 5.0MB 0ms 0ms dmd 2.110.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 59ms 0.9ms 15.7MB 60ms 10ms ldc2 1.40.1
d 2.d 238ms 2.3ms 22.4MB 233ms 10ms dmd 2.110.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 456ms 1.6ms 141.8MB 423ms 37ms ldc2 1.40.1
d 2.d 2491ms 3.8ms 158.8MB 2510ms 33ms dmd 2.110.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 500ms 4.6ms 26.3MB 480ms 7ms zig 0.14.0
d 1-m.d 646ms 11ms 55.2MB 2187ms 10ms ldc2 1.40.1
d 1-m.d 1874ms 24ms 47.5MB 5737ms 10ms dmd 2.110.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 66ms 0.7ms 15.3MB 50ms 0ms zig 0.14.0
d 1-m.d 96ms 3.1ms 38.7MB 253ms 10ms ldc2 1.40.1
d 1-m.d 206ms 5.7ms 38.1MB 603ms 10ms dmd 2.110.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 33ms 0.3ms 2.8MB 23ms 0ms zig 0.14.0
d 1.d 132ms 0.5ms 5.9MB 123ms 0ms ldc2 1.40.1
d 1.d 177ms 2.7ms 7.9MB 163ms 7ms dmd 2.110.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 95ms 2.4ms 2.8MB 87ms 0ms zig 0.14.0
d 1.d 374ms 1.0ms 5.9MB 363ms 13ms ldc2 1.40.1
d 1.d 514ms 1.2ms 7.9MB 500ms 13ms dmd 2.110.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 16ms 1.3ms 1.3MB 10ms 0ms zig 0.14.0
d 1.d 57ms 0.9ms 5.9MB 43ms 0ms ldc2 1.40.1
d 1.d 80ms 1.3ms 7.9MB 70ms 0ms dmd 2.110.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 247ms 0.1ms 4.0MB 240ms 0ms zig 0.14.0
d 1.d 295ms 0.7ms 7.0MB 283ms 0ms ldc2 1.40.1
d 1.d 2187ms 22ms 9.0MB 2177ms 0ms dmd 2.110.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 12ms 0.2ms 1.1MB 10ms 0ms zig 0.14.0
d 1.d 15ms 0.3ms 3.0MB 10ms 0ms ldc2 1.40.1
d 1.d 96ms 1.6ms 4.8MB 90ms 0ms dmd 2.110.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 878ms 6.2ms 41.0MB 853ms 10ms zig 0.14.0
d 1.d 988ms 12ms 312.6MB 960ms 33ms ldc2 1.40.1
d 1.d 1785ms 13ms 314.7MB 1923ms 40ms dmd 2.110.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 181ms 5.2ms 11.0MB 167ms 0ms zig 0.14.0
d 1.d 198ms 1.8ms 312.7MB 163ms 23ms ldc2 1.40.1
d 1.d 350ms 9.4ms 314.7MB 320ms 27ms dmd 2.110.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2.zig 280ms 0.4ms 1.0MB 270ms 0ms zig 0.14.0
zig 1.zig 315ms 1.2ms 1.1MB 303ms 0ms zig 0.14.0
d 1.d 362ms 1.8ms 2.9MB 350ms 0ms ldc2 1.40.1
d 2.d 362ms 0.4ms 2.9MB 350ms 0ms ldc2 1.40.1
d 1.d 682ms 4.0ms 4.6MB 673ms 0ms dmd 2.110.0
d 2.d 2040ms 13ms 4.6MB 2033ms 0ms dmd 2.110.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 2.zig 30ms 0.1ms 1.0MB 20ms 0ms zig 0.14.0
zig 1.zig 34ms 0.4ms 1.1MB 27ms 0ms zig 0.14.0
d 2.d 39ms 0.1ms 2.9MB 30ms 0ms ldc2 1.40.1
d 1.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.40.1
d 1.d 71ms 0.3ms 4.6MB 60ms 0ms dmd 2.110.0
d 2.d 210ms 3.6ms 4.5MB 203ms 0ms dmd 2.110.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 283ms 4.4ms 40.1MB 270ms 0ms zig 0.14.0
d 1.d 330ms 2.6ms 43.1MB 317ms 3ms ldc2 1.40.1
zig 2.zig 331ms 3.8ms 6.0MB 320ms 0ms zig 0.14.0
d 1.d 369ms 6.5ms 77.3MB 353ms 7ms dmd 2.110.0
d 2.d 843ms 1.5ms 46.9MB 823ms 0ms ldc2 1.40.1
d 2.d 1168ms 2.1ms 48.7MB 1150ms 10ms dmd 2.110.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 56ms 2.5ms 10.8MB 47ms 0ms zig 0.14.0
d 1.d 64ms 1.5ms 15.0MB 57ms 0ms ldc2 1.40.1
d 1.d 77ms 3.4ms 27.2MB 67ms 0ms dmd 2.110.0
zig 2.zig 81ms 0.9ms 2.3MB 70ms 0ms zig 0.14.0
d 2.d 209ms 2.5ms 17.1MB 200ms 0ms ldc2 1.40.1
d 2.d 294ms 1.0ms 18.9MB 280ms 0ms dmd 2.110.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2428ms 10.0ms 8.1MB 2400ms 390ms ldc2 1.40.1
zig 1.zig 2466ms 27ms 2.2MB 2440ms 17ms zig 0.14.0
d 1.d 4357ms 29ms 10.2MB 4283ms 490ms dmd 2.110.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 569ms 3.4ms 1.8MB 557ms 0ms zig 0.14.0
d 1.d 584ms 0.7ms 8.1MB 550ms 113ms ldc2 1.40.1
d 1.d 1028ms 5.0ms 10.2MB 1010ms 110ms dmd 2.110.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 584ms 5.3ms 171.9MB 767ms 20ms ldc2 1.40.1
d 3.d 1308ms 5.8ms 172.7MB 1500ms 20ms dmd 2.110.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 64ms 1.1ms 27.6MB 70ms 0ms ldc2 1.40.1
d 3.d 139ms 5.6ms 30.4MB 153ms 0ms dmd 2.110.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 4803ms 10ms 3.9MB 4777ms 350ms ldc2 1.40.1
d 1.d timeout 0.0ms 6.6MB 4983ms 267ms dmd 2.110.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1210ms 2.5ms 3.9MB 1190ms 93ms ldc2 1.40.1
d 1.d 2045ms 6.8ms 6.5MB 2017ms 117ms dmd 2.110.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3600ms 4.4ms 3.9MB 3587ms 0ms ldc2 1.40.1
d 1.d 3654ms 31ms 5.9MB 3643ms 0ms dmd 2.110.0
zig 1.zig 3697ms 9.3ms 1.4MB 3690ms 0ms zig 0.14.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 901ms 1.0ms 3.8MB 890ms 0ms ldc2 1.40.1
d 1.d 922ms 0.8ms 7.6MB 910ms 0ms dmd 2.110.0
zig 1.zig 925ms 2.3ms 1.3MB 917ms 0ms zig 0.14.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 228ms 0.3ms 3.0MB 220ms 0ms ldc2 1.40.1
d 1.d 233ms 1.2ms 5.0MB 220ms 0ms dmd 2.110.0
zig 1.zig 234ms 0.2ms 1.3MB 230ms 0ms zig 0.14.0