Programming Language and compiler
Benchmarks

All D benchmarks

Current benchmark data was generated on Sun Jul 13 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 2199ms 4.7ms 312.4MB 2163ms 43ms ldc2 1.41.0
1.d 3022ms 5.5ms 314.5MB 3190ms 57ms dmd 2.111.0

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 205ms 3.7ms 207.6MB 177ms 17ms ldc2 1.41.0
1.d 262ms 2.2ms 211.2MB 230ms 17ms 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 4960ms 30ms dmd 2.111.0
1.d timeout 0.0ms 15.3MB 4970ms 20ms ldc2 1.41.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1063ms 16ms 10.2MB 1037ms 13ms ldc2 1.41.0
1.d 1368ms 10ms 12.1MB 1350ms 10ms dmd 2.111.0

edigits

Input: 250001

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 2551ms 4.2ms 8.1MB 2540ms 0ms ldc2 1.41.0
1.d 2867ms 4.2ms 10.3MB 2857ms 0ms dmd 2.111.0

Input: 100000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 441ms 0.9ms 8.1MB 430ms 0ms ldc2 1.41.0
1.d 521ms 1.5ms 10.4MB 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 377ms 1.9ms 3.0MB 1423ms 0ms ldc2 1.41.0
2-im.d 1130ms 21ms 3.0MB 4303ms 3ms ldc2 1.41.0
1-i.d 1488ms 1.6ms 2.9MB 1480ms 0ms ldc2 1.41.0
1.d 3115ms 16ms 2.9MB 3107ms 0ms ldc2 1.41.0
2-i.d 3226ms 2.2ms 2.9MB 3217ms 0ms ldc2 1.41.0
1.d 3535ms 4.3ms 4.6MB 3527ms 0ms dmd 2.111.0
1-im.d 4491ms 66ms 4.8MB 17510ms 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 4.5MB 4990ms 0ms dmd 2.111.0
2-im.d timeout 0.0ms 4.9MB 19723ms 0ms dmd 2.111.0

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-im.d 37ms 1.0ms 3.0MB 110ms 0ms ldc2 1.41.0
2-im.d 96ms 1.9ms 3.0MB 350ms 0ms ldc2 1.41.0
1-i.d 123ms 0.1ms 2.9MB 120ms 0ms ldc2 1.41.0
1.d 264ms 3.2ms 2.9MB 253ms 0ms ldc2 1.41.0
2-i.d 266ms 0.6ms 2.8MB 260ms 0ms ldc2 1.41.0
1.d 297ms 3.2ms 4.6MB 290ms 0ms dmd 2.111.0
1-im.d 377ms 1.2ms 4.9MB 1430ms 0ms dmd 2.111.0
2-im.d 527ms 0.8ms 4.9MB 2003ms 0ms dmd 2.111.0
1-i.d 882ms 15ms 4.6MB 873ms 0ms dmd 2.111.0
2-i.d 1390ms 1.3ms 4.6MB 1380ms 0ms dmd 2.111.0

fasta

Input: 2500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 111ms 2.1ms 2.9MB 100ms 0ms ldc2 1.41.0
1.d 640ms 2.7ms 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 68ms 0.4ms 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 3.0MB 0ms 0ms ldc2 1.41.0
1.d 2.1ms 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 59ms 0.6ms 15.7MB 63ms 7ms ldc2 1.41.0
2.d 239ms 2.1ms 22.7MB 237ms 7ms dmd 2.111.0

Input: canada 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
2.d 464ms 3.4ms 139.5MB 433ms 27ms ldc2 1.41.0
2.d 2474ms 8.3ms 158.3MB 2493ms 30ms dmd 2.111.0

knucleotide

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.d 643ms 26ms 48.5MB 2040ms 13ms ldc2 1.41.0
1-m.d 1937ms 33ms 50.0MB 5567ms 10ms dmd 2.111.0

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1-m.d 95ms 8.6ms 39.5MB 253ms 23ms ldc2 1.41.0
1-m.d 211ms 7.1ms 39.9MB 597ms 10ms dmd 2.111.0

lru

Input: 1000 1000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 130ms 0.9ms 6.2MB 120ms 0ms ldc2 1.41.0
1.d 175ms 1.9ms 7.9MB 163ms 3ms dmd 2.111.0

Input: 1000 3000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 377ms 2.3ms 5.9MB 367ms 10ms ldc2 1.41.0
1.d 510ms 2.0ms 7.9MB 497ms 10ms dmd 2.111.0

Input: 100 500000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 58ms 0.4ms 5.9MB 50ms 0ms ldc2 1.41.0
1.d 80ms 0.5ms 8.1MB 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 1.1ms 6.5MB 353ms 0ms ldc2 1.41.0
1.d 2143ms 64ms 9.4MB 2130ms 0ms dmd 2.111.0

Input: 1000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 18ms 0.3ms 3.0MB 10ms 0ms ldc2 1.41.0
1.d 92ms 2.4ms 4.6MB 87ms 0ms dmd 2.111.0

merkletrees

Input: 17

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1096ms 2.5ms 312.7MB 1057ms 40ms ldc2 1.41.0
1.d 1850ms 6.1ms 314.9MB 1977ms 50ms dmd 2.111.0

Input: 15

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 230ms 1.2ms 312.7MB 190ms 27ms ldc2 1.41.0
1.d 359ms 1.7ms 315.0MB 327ms 27ms dmd 2.111.0

nbody

Input: 5000000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 360ms 0.2ms 2.9MB 350ms 0ms ldc2 1.41.0
2.d 361ms 1.9ms 2.9MB 350ms 0ms ldc2 1.41.0
1.d 678ms 2.2ms 4.6MB 670ms 0ms dmd 2.111.0
2.d 2033ms 7.7ms 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 38ms 0.3ms 2.9MB 30ms 0ms ldc2 1.41.0
1.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.41.0
1.d 72ms 0.1ms 4.8MB 60ms 0ms dmd 2.111.0
2.d 207ms 2.8ms 4.8MB 197ms 0ms dmd 2.111.0

nsieve

Input: 12

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 300ms 2.3ms 45.7MB 287ms 0ms ldc2 1.41.0
1.d 347ms 3.8ms 79.3MB 333ms 3ms dmd 2.111.0
2.d 843ms 2.4ms 49.7MB 830ms 3ms ldc2 1.41.0
2.d 1172ms 3.3ms 49.3MB 1157ms 3ms dmd 2.111.0

Input: 10

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 64ms 3.3ms 15.7MB 53ms 0ms ldc2 1.41.0
1.d 76ms 1.6ms 25.2MB 63ms 0ms dmd 2.111.0
2.d 213ms 1.6ms 17.7MB 200ms 0ms ldc2 1.41.0
2.d 291ms 1.5ms 19.6MB 280ms 0ms dmd 2.111.0

pidigits

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 2431ms 4.5ms 8.1MB 2407ms 407ms ldc2 1.41.0
1.d 4429ms 9.8ms 10.5MB 4377ms 480ms dmd 2.111.0

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 584ms 4.3ms 8.1MB 563ms 103ms ldc2 1.41.0
1.d 1055ms 3.8ms 10.3MB 1050ms 97ms dmd 2.111.0

regex-redux

Input: 2500000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3.d 583ms 1.9ms 174.2MB 767ms 27ms ldc2 1.41.0
3.d 1212ms 9.4ms 177.2MB 1397ms 27ms dmd 2.111.0

Input: 250000_in

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
3.d 65ms 0.3ms 27.6MB 77ms 0ms ldc2 1.41.0
3.d 126ms 1.3ms 31.7MB 133ms 7ms dmd 2.111.0

secp256k1

Input: 2000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 4782ms 7.8ms 4.0MB 4757ms 360ms ldc2 1.41.0
1.d timeout 0.0ms 6.5MB 4963ms 290ms dmd 2.111.0

Input: 500

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 1196ms 6.4ms 3.9MB 1190ms 77ms ldc2 1.41.0
1.d 2035ms 6.3ms 6.8MB 2023ms 110ms dmd 2.111.0

spectral-norm

Input: 8000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 3594ms 2.3ms 4.0MB 3583ms 0ms ldc2 1.41.0
1.d 3630ms 25ms 5.9MB 3620ms 0ms dmd 2.111.0

Input: 4000

code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
1.d 901ms 0.5ms 3.5MB 890ms 0ms ldc2 1.41.0
1.d 920ms 0.8ms 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 227ms 0.1ms 3.3MB 220ms 0ms ldc2 1.41.0
1.d 233ms 1.1ms 4.9MB 220ms 0ms dmd 2.111.0