Programming Language and compiler
Benchmarks

Zig VS D benchmarks

Current benchmark data was generated on Tue Jul 01 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
zig 1.zig 2079ms 56ms 49.0MB 2047ms 17ms zig 0.14.1
d 1.d 2206ms 5.4ms 312.8MB 2170ms 43ms ldc2 1.41.0
d 1.d 3040ms 21ms 314.5MB 3210ms 57ms dmd 2.111.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 152ms 1.7ms 7.0MB 140ms 0ms zig 0.14.1
d 1.d 207ms 3.1ms 207.9MB 183ms 13ms ldc2 1.41.0
d 1.d 262ms 1.5ms 210.9MB 233ms 13ms dmd 2.111.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2256ms 12ms 2.5MB 2227ms 17ms zig 0.14.1
d 1.d 2551ms 3.5ms 8.0MB 2540ms 0ms ldc2 1.41.0
d 1.d 2871ms 10ms 10.5MB 2860ms 0ms dmd 2.111.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 380ms 2.7ms 1.9MB 363ms 0ms zig 0.14.1
d 1.d 444ms 2.0ms 8.1MB 437ms 0ms ldc2 1.41.0
d 1.d 517ms 1.2ms 10.5MB 510ms 0ms dmd 2.111.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 373ms 5.6ms 3.1MB 1427ms 0ms ldc2 1.41.0
zig 2-m.zig 634ms 3.4ms 1.4MB 2393ms 0ms zig 0.14.1
d 2-im.d 1114ms 9.3ms 3.0MB 4320ms 0ms ldc2 1.41.0
d 1-i.d 1488ms 1.7ms 2.9MB 1480ms 0ms ldc2 1.41.0
zig 3-i.zig 1791ms 48ms 1.0MB 1780ms 0ms zig 0.14.1
zig 1.zig 2728ms 20ms 1.0MB 2720ms 0ms zig 0.14.1
d 1.d 3143ms 19ms 2.9MB 3130ms 0ms ldc2 1.41.0
d 2-i.d 3232ms 3.6ms 2.9MB 3223ms 0ms ldc2 1.41.0
d 1.d 3544ms 3.7ms 4.6MB 3533ms 0ms dmd 2.111.0
d 1-im.d 4461ms 9.7ms 5.3MB 17560ms 0ms dmd 2.111.0
d 1-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
d 2-im.d timeout 0.0ms 4.9MB 19740ms 20ms dmd 2.111.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 36ms 0.9ms 3.1MB 110ms 0ms ldc2 1.41.0
zig 2-m.zig 60ms 0.4ms 1.4MB 200ms 0ms zig 0.14.1
d 2-im.d 98ms 1.6ms 3.0MB 347ms 0ms ldc2 1.41.0
d 1-i.d 124ms 0.3ms 2.9MB 120ms 0ms ldc2 1.41.0
zig 3-i.zig 147ms 0.3ms 1.0MB 140ms 0ms zig 0.14.1
zig 1.zig 228ms 1.0ms 1.0MB 220ms 0ms zig 0.14.1
d 1.d 265ms 3.5ms 2.9MB 257ms 0ms ldc2 1.41.0
d 2-i.d 266ms 1.0ms 2.9MB 260ms 0ms ldc2 1.41.0
d 1.d 300ms 2.1ms 4.6MB 290ms 0ms dmd 2.111.0
d 1-im.d 402ms 34ms 4.8MB 1410ms 0ms dmd 2.111.0
d 2-im.d 524ms 3.0ms 4.9MB 2003ms 0ms dmd 2.111.0
d 1-i.d 887ms 8.9ms 4.5MB 877ms 0ms dmd 2.111.0
d 2-i.d 1393ms 4.6ms 4.5MB 1383ms 0ms dmd 2.111.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 88ms 0.6ms 1.0MB 80ms 0ms zig 0.14.1
d 1.d 109ms 0.2ms 2.9MB 100ms 0ms ldc2 1.41.0
d 1.d 641ms 3.8ms 4.9MB 630ms 0ms dmd 2.111.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 10ms 0.1ms 1.0MB 0ms 0ms zig 0.14.1
d 1.d 14ms 1.5ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 68ms 0.9ms 4.8MB 60ms 0ms dmd 2.111.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 0.9ms 0.0ms 1.1MB 0ms 0ms zig 0.14.1
d 1.d 1.7ms 0.1ms 3.0MB 0ms 0ms ldc2 1.41.0
d 1.d 2.2ms 0.1ms 5.1MB 0ms 0ms dmd 2.111.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 321ms 1.7ms 67.1MB 853ms 20ms zig 0.14.1
zig 1.zig 504ms 4.0ms 27.9MB 480ms 13ms zig 0.14.1
d 1-m.d 713ms 31ms 47.5MB 2403ms 10ms ldc2 1.41.0
d 1-m.d 2035ms 101ms 50.6MB 6757ms 17ms dmd 2.111.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1-m.zig 65ms 0.5ms 54.4MB 127ms 37ms zig 0.14.1
zig 1.zig 67ms 2.4ms 15.4MB 50ms 3ms zig 0.14.1
d 1-m.d 100ms 4.7ms 39.5MB 263ms 10ms ldc2 1.41.0
d 1-m.d 257ms 16ms 41.0MB 737ms 17ms dmd 2.111.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 36ms 0.2ms 2.8MB 30ms 0ms zig 0.14.1
d 1.d 130ms 1.9ms 5.9MB 120ms 0ms ldc2 1.41.0
d 1.d 178ms 3.2ms 7.9MB 167ms 3ms dmd 2.111.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 90ms 0.4ms 2.8MB 80ms 0ms zig 0.14.1
d 1.d 385ms 2.3ms 5.9MB 370ms 17ms ldc2 1.41.0
d 1.d 520ms 2.3ms 7.9MB 513ms 13ms dmd 2.111.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 14ms 0.1ms 1.3MB 10ms 0ms zig 0.14.1
d 1.d 58ms 1.2ms 5.9MB 50ms 0ms ldc2 1.41.0
d 1.d 79ms 1.3ms 8.1MB 67ms 0ms dmd 2.111.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 249ms 1.1ms 4.1MB 240ms 0ms zig 0.14.1
d 1.d 367ms 0.5ms 7.5MB 360ms 0ms ldc2 1.41.0
d 1.d 2120ms 5.9ms 9.4MB 2107ms 0ms dmd 2.111.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 12ms 0.3ms 1.1MB 0ms 0ms zig 0.14.1
d 1.d 18ms 0.4ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 93ms 2.8ms 4.9MB 87ms 0ms dmd 2.111.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 877ms 11ms 41.0MB 850ms 13ms zig 0.14.1
d 1.d 1134ms 3.1ms 312.6MB 1097ms 40ms ldc2 1.41.0
d 1.d 1870ms 15ms 314.9MB 2007ms 47ms dmd 2.111.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 178ms 3.0ms 11.0MB 163ms 0ms zig 0.14.1
d 1.d 232ms 1.5ms 312.8MB 190ms 30ms ldc2 1.41.0
d 1.d 361ms 4.2ms 314.8MB 330ms 30ms dmd 2.111.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 198ms 1.0ms 1.0MB 190ms 0ms zig 0.14.1
zig 2.zig 279ms 0.3ms 1.0MB 270ms 0ms zig 0.14.1
zig 1.zig 315ms 1.5ms 1.1MB 307ms 0ms zig 0.14.1
d 1.d 361ms 1.2ms 2.9MB 350ms 0ms ldc2 1.41.0
d 2.d 361ms 0.9ms 2.9MB 350ms 0ms ldc2 1.41.0
d 1.d 677ms 14ms 4.8MB 667ms 0ms dmd 2.111.0
d 2.d 2033ms 5.4ms 4.8MB 2023ms 0ms dmd 2.111.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 3.zig 22ms 0.1ms 1.0MB 10ms 0ms zig 0.14.1
zig 2.zig 30ms 0.0ms 1.0MB 20ms 0ms zig 0.14.1
zig 1.zig 33ms 0.1ms 1.1MB 30ms 0ms zig 0.14.1
d 1.d 39ms 0.6ms 2.9MB 30ms 0ms ldc2 1.41.0
d 2.d 39ms 0.7ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 71ms 1.2ms 4.6MB 60ms 0ms dmd 2.111.0
d 2.d 210ms 1.7ms 4.8MB 200ms 0ms dmd 2.111.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 274ms 3.8ms 40.2MB 257ms 0ms zig 0.14.1
zig 2.zig 325ms 2.5ms 6.0MB 313ms 0ms zig 0.14.1
d 1.d 344ms 7.7ms 45.7MB 323ms 7ms ldc2 1.41.0
d 1.d 385ms 4.2ms 79.2MB 370ms 0ms dmd 2.111.0
d 2.d 854ms 0.6ms 49.7MB 833ms 10ms ldc2 1.41.0
d 2.d 1168ms 1.5ms 49.3MB 1150ms 10ms dmd 2.111.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 50ms 2.9ms 10.9MB 40ms 0ms zig 0.14.1
d 1.d 63ms 4.3ms 15.7MB 53ms 0ms ldc2 1.41.0
d 1.d 78ms 3.7ms 25.3MB 67ms 0ms dmd 2.111.0
zig 2.zig 81ms 0.8ms 2.3MB 70ms 0ms zig 0.14.1
d 2.d 211ms 1.2ms 17.8MB 200ms 0ms ldc2 1.41.0
d 2.d 297ms 1.9ms 19.7MB 280ms 0ms dmd 2.111.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 2453ms 3.5ms 2.2MB 2427ms 17ms zig 0.14.1
d 1.d 2454ms 24ms 8.0MB 2420ms 417ms ldc2 1.41.0
d 1.d 4480ms 3.9ms 10.5MB 4400ms 500ms dmd 2.111.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
zig 1.zig 564ms 2.2ms 1.8MB 553ms 0ms zig 0.14.1
d 1.d 587ms 3.4ms 8.1MB 567ms 103ms ldc2 1.41.0
d 1.d 1068ms 6.3ms 10.4MB 1033ms 127ms dmd 2.111.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3599ms 3.4ms 4.0MB 3590ms 0ms ldc2 1.41.0
d 1.d 3649ms 20ms 5.9MB 3640ms 0ms dmd 2.111.0
zig 1.zig 3691ms 6.4ms 1.4MB 3683ms 0ms zig 0.14.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 903ms 2.0ms 3.5MB 893ms 0ms ldc2 1.41.0
d 1.d 917ms 3.9ms 5.3MB 907ms 0ms dmd 2.111.0
zig 1.zig 925ms 2.3ms 1.3MB 913ms 0ms zig 0.14.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 229ms 1.7ms 3.1MB 220ms 0ms ldc2 1.41.0
d 1.d 233ms 0.2ms 5.0MB 220ms 0ms dmd 2.111.0
zig 1.zig 233ms 1.3ms 1.3MB 223ms 0ms zig 0.14.1