Programming Language and compiler
Benchmarks

All D benchmarks

Current benchmark data was generated on Fri Aug 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

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 2187ms 1.9ms 312.5MB 2160ms 33ms ldc2 1.41.0
1.d 3000ms 18ms 314.1MB 3163ms 50ms dmd 2.111.0

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 205ms 3.2ms 207.9MB 180ms 13ms ldc2 1.41.0
1.d 262ms 1.9ms 209.7MB 237ms 10ms dmd 2.111.0

coro-prime-sieve

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d timeout 0.0ms 16.5MB 4970ms 17ms dmd 2.111.0
1.d timeout 0.0ms 17.5MB 4963ms 27ms ldc2 1.41.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1058ms 5.4ms 10.2MB 1033ms 10ms ldc2 1.41.0
1.d 1373ms 11ms 12.5MB 1350ms 10ms dmd 2.111.0

edigits

Input: 250001

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 2555ms 1.6ms 8.1MB 2543ms 0ms ldc2 1.41.0
1.d 2870ms 7.3ms 10.4MB 2860ms 0ms dmd 2.111.0

Input: 100000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 443ms 3.2ms 8.1MB 430ms 0ms ldc2 1.41.0
1.d 517ms 0.4ms 10.5MB 510ms 0ms dmd 2.111.0

fannkuch-redux

Input: 11

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-im.d 374ms 6.5ms 3.0MB 1420ms 0ms ldc2 1.41.0
2-im.d 1109ms 4.2ms 3.0MB 4320ms 0ms ldc2 1.41.0
1-i.d 1489ms 0.4ms 2.9MB 1480ms 0ms ldc2 1.41.0
1.d 3152ms 15ms 2.9MB 3140ms 0ms ldc2 1.41.0
2-i.d 3224ms 2.6ms 2.9MB 3213ms 0ms ldc2 1.41.0
1.d 3538ms 5.1ms 4.6MB 3527ms 0ms dmd 2.111.0
1-im.d 4488ms 40ms 4.9MB 17597ms 0ms dmd 2.111.0
1-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
2-im.d timeout 0.0ms 4.9MB 19753ms 7ms dmd 2.111.0

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-im.d 36ms 1.2ms 3.1MB 110ms 0ms ldc2 1.41.0
2-im.d 97ms 2.1ms 3.0MB 350ms 0ms ldc2 1.41.0
1-i.d 124ms 0.3ms 2.9MB 120ms 0ms ldc2 1.41.0
1.d 261ms 0.5ms 2.9MB 250ms 0ms ldc2 1.41.0
2-i.d 266ms 1.0ms 2.9MB 260ms 0ms ldc2 1.41.0
1.d 297ms 2.2ms 4.6MB 287ms 0ms dmd 2.111.0
1-im.d 376ms 0.8ms 4.8MB 1433ms 0ms dmd 2.111.0
2-im.d 525ms 3.2ms 5.1MB 2010ms 0ms dmd 2.111.0
1-i.d 880ms 8.2ms 4.6MB 870ms 0ms dmd 2.111.0
2-i.d 1375ms 1.1ms 4.6MB 1363ms 0ms dmd 2.111.0

fasta

Input: 2500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 112ms 2.7ms 2.9MB 103ms 0ms ldc2 1.41.0
1.d 641ms 1.0ms 4.6MB 630ms 0ms dmd 2.111.0

Input: 250000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 14ms 0.5ms 2.9MB 10ms 0ms ldc2 1.41.0
1.d 67ms 0.8ms 4.8MB 60ms 0ms dmd 2.111.0

helloworld

Input: QwQ

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1.6ms 0.1ms 2.9MB 0ms 0ms ldc2 1.41.0
1.d 2.0ms 0.2ms 5.1MB 0ms 0ms dmd 2.111.0

json-serde

Input: sample 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.d 58ms 1.1ms 15.9MB 60ms 7ms ldc2 1.41.0
2.d 237ms 2.6ms 22.6MB 240ms 7ms dmd 2.111.0

Input: canada 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.d 464ms 5.0ms 140.4MB 437ms 30ms ldc2 1.41.0
2.d 2479ms 20ms 158.4MB 2493ms 37ms dmd 2.111.0

knucleotide

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.d 639ms 21ms 47.9MB 2073ms 10ms ldc2 1.41.0
1-m.d 1884ms 33ms 50.0MB 5657ms 13ms dmd 2.111.0

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.d 92ms 1.5ms 38.7MB 253ms 7ms ldc2 1.41.0
1-m.d 212ms 8.4ms 40.9MB 610ms 13ms dmd 2.111.0

lru

Input: 1000 1000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 130ms 1.7ms 6.1MB 120ms 0ms ldc2 1.41.0
1.d 176ms 2.3ms 8.1MB 163ms 7ms dmd 2.111.0

Input: 1000 3000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 380ms 0.5ms 5.9MB 370ms 10ms ldc2 1.41.0
1.d 510ms 2.8ms 8.2MB 500ms 10ms dmd 2.111.0

Input: 100 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 57ms 1.3ms 5.9MB 50ms 0ms ldc2 1.41.0
1.d 79ms 0.2ms 7.9MB 70ms 0ms dmd 2.111.0

mandelbrot

Input: 5000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 367ms 0.6ms 7.5MB 357ms 0ms ldc2 1.41.0
1.d 2107ms 12ms 9.4MB 2097ms 0ms dmd 2.111.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 17ms 0.1ms 3.0MB 10ms 0ms ldc2 1.41.0
1.d 91ms 2.3ms 4.6MB 83ms 0ms dmd 2.111.0

merkletrees

Input: 17

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1093ms 13ms 312.6MB 1057ms 37ms ldc2 1.41.0
1.d 1863ms 29ms 314.3MB 1990ms 47ms dmd 2.111.0

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 227ms 2.7ms 312.5MB 193ms 20ms ldc2 1.41.0
1.d 359ms 1.1ms 315.0MB 323ms 27ms dmd 2.111.0

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 361ms 0.5ms 2.9MB 350ms 0ms ldc2 1.41.0
2.d 361ms 1.4ms 2.9MB 350ms 0ms ldc2 1.41.0
1.d 683ms 2.2ms 4.8MB 673ms 0ms dmd 2.111.0
2.d 2033ms 7.1ms 4.8MB 2023ms 0ms dmd 2.111.0

Input: 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.d 39ms 0.7ms 2.9MB 30ms 0ms ldc2 1.41.0
1.d 39ms 0.3ms 2.9MB 30ms 0ms ldc2 1.41.0
1.d 71ms 1.1ms 4.8MB 60ms 0ms dmd 2.111.0
2.d 208ms 2.9ms 4.8MB 200ms 0ms dmd 2.111.0

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 303ms 7.2ms 43.5MB 287ms 0ms ldc2 1.41.0
1.d 345ms 5.5ms 79.3MB 327ms 3ms dmd 2.111.0
2.d 846ms 5.3ms 47.7MB 827ms 7ms ldc2 1.41.0
2.d 1170ms 7.1ms 51.6MB 1150ms 7ms dmd 2.111.0

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 64ms 2.7ms 15.7MB 53ms 0ms ldc2 1.41.0
1.d 75ms 1.7ms 25.5MB 67ms 0ms dmd 2.111.0
2.d 210ms 2.0ms 17.7MB 200ms 0ms ldc2 1.41.0
2.d 295ms 1.1ms 19.7MB 280ms 0ms dmd 2.111.0

pidigits

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 2445ms 17ms 8.1MB 2407ms 423ms ldc2 1.41.0
1.d 4429ms 2.9ms 10.5MB 4383ms 463ms dmd 2.111.0

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 582ms 3.3ms 8.2MB 557ms 110ms ldc2 1.41.0
1.d 1056ms 3.2ms 10.4MB 1033ms 110ms dmd 2.111.0

regex-redux

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3.d 584ms 1.7ms 172.2MB 767ms 20ms ldc2 1.41.0
3.d 1200ms 3.9ms 177.3MB 1387ms 27ms dmd 2.111.0

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3.d 63ms 0.8ms 26.3MB 70ms 0ms ldc2 1.41.0
3.d 126ms 0.9ms 31.7MB 137ms 0ms dmd 2.111.0

secp256k1

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 4859ms 111ms 4.3MB 4827ms 367ms ldc2 1.41.0
1.d timeout 0.0ms 6.5MB 4960ms 297ms dmd 2.111.0

Input: 500

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1214ms 8.8ms 3.9MB 1190ms 100ms ldc2 1.41.0
1.d 2046ms 14ms 6.5MB 2037ms 100ms dmd 2.111.0

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 3597ms 3.2ms 6.2MB 3587ms 0ms ldc2 1.41.0
1.d 3655ms 25ms 8.4MB 3643ms 0ms dmd 2.111.0

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 901ms 0.9ms 3.5MB 890ms 0ms ldc2 1.41.0
1.d 921ms 9.3ms 5.3MB 910ms 0ms dmd 2.111.0

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 228ms 1.4ms 3.3MB 220ms 0ms ldc2 1.41.0
1.d 233ms 1.9ms 7.2MB 220ms 0ms dmd 2.111.0