Programming Language and compiler
Benchmarks

D VS C benchmarks

Current benchmark data was generated on Tue Dec 31 2024, 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 1655ms 6.5ms 312.8MB 1623ms 40ms ldc2 1.40.0
d 1.d 2539ms 16ms 314.8MB 2723ms 37ms dmd 2.109.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 153ms 3.5ms 208.1MB 123ms 13ms ldc2 1.40.0
d 1.d 218ms 2.9ms 209.9MB 190ms 13ms dmd 2.109.1

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 16.5MB 4973ms 17ms dmd 2.109.1
d 1.d timeout 0.0ms 15.6MB 4960ms 23ms ldc2 1.40.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 957ms 7.3ms 10.2MB 940ms 3ms ldc2 1.40.0
d 1.d 1242ms 5.8ms 10.6MB 1223ms 3ms dmd 2.109.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2428ms 28ms 8.1MB 2410ms 7ms ldc2 1.40.0
d 1.d 2770ms 13ms 10.2MB 2760ms 0ms dmd 2.109.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 432ms 6.9ms 8.1MB 420ms 0ms ldc2 1.40.0
d 1.d 501ms 0.5ms 10.2MB 493ms 0ms dmd 2.109.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 366ms 4.6ms 6.9MB 1363ms 3ms ldc2 1.40.0
d 2-im.d 1052ms 12ms 6.9MB 4073ms 0ms ldc2 1.40.0
d 1-i.d 1410ms 2.6ms 2.9MB 1400ms 0ms ldc2 1.40.0
d 1.d 2946ms 29ms 2.9MB 2937ms 0ms ldc2 1.40.0
d 2-i.d 3069ms 14ms 2.9MB 3057ms 0ms ldc2 1.40.0
d 1.d 3337ms 28ms 4.5MB 3330ms 0ms dmd 2.109.1
d 1-im.d 4021ms 10ms 6.9MB 15707ms 7ms dmd 2.109.1
d 1-i.d timeout 0.0ms 4.5MB 4990ms 0ms dmd 2.109.1
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.109.1
d 2-im.d timeout 0.0ms 8.8MB 19697ms 7ms dmd 2.109.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 39ms 2.2ms 5.1MB 110ms 0ms ldc2 1.40.0
d 2-im.d 96ms 2.8ms 4.9MB 330ms 0ms ldc2 1.40.0
d 1-i.d 118ms 3.0ms 2.8MB 110ms 0ms ldc2 1.40.0
d 1.d 248ms 2.3ms 2.8MB 237ms 0ms ldc2 1.40.0
d 2-i.d 257ms 5.1ms 2.9MB 247ms 0ms ldc2 1.40.0
d 1.d 280ms 4.8ms 4.5MB 273ms 0ms dmd 2.109.1
d 1-im.d 336ms 2.0ms 6.9MB 1270ms 0ms dmd 2.109.1
d 2-im.d 502ms 2.9ms 6.9MB 1903ms 0ms dmd 2.109.1
d 1-i.d 823ms 13ms 4.5MB 813ms 0ms dmd 2.109.1
d 2-i.d 1343ms 11ms 4.5MB 1333ms 0ms dmd 2.109.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 186ms 2.6ms 48.7MB 177ms 0ms ldc2 1.40.0
d 1.d 590ms 10ms 42.2MB 573ms 7ms dmd 2.109.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 22ms 0.2ms 10.5MB 17ms 0ms ldc2 1.40.0
d 1.d 63ms 2.0ms 14.1MB 53ms 0ms dmd 2.109.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 0.9ms 0.0ms 1.4MB 0ms 0ms zigcc 0.13.0
c 1.c 1.2ms 0.0ms 2.1MB 0ms 0ms gcc 14.2.0
c 1.c 1.3ms 0.2ms 2.1MB 0ms 0ms clang 14.0.0-1ubuntu1.1
d 1.d 1.7ms 0.1ms 2.9MB 0ms 0ms ldc2 1.40.0
d 1.d 2.2ms 0.1ms 5.0MB 0ms 0ms dmd 2.109.1

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 54ms 0.8ms 15.7MB 47ms 13ms ldc2 1.40.0
d 2.d 236ms 19ms 22.9MB 233ms 40ms dmd 2.109.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 431ms 7.9ms 141.3MB 410ms 20ms ldc2 1.40.0
d 2.d 2375ms 18ms 157.8MB 2370ms 50ms dmd 2.109.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 175ms 15ms 26.1MB 410ms 7ms gcc 14.2.0
c 1-m.c 282ms 6.9ms 29.6MB 953ms 30ms clang 14.0.0-1ubuntu1.1
d 1-m.d 599ms 17ms 52.0MB 1927ms 17ms ldc2 1.40.0
d 1-m.d 1751ms 22ms 55.1MB 5230ms 17ms dmd 2.109.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-m.c 27ms 0.6ms 13.2MB 57ms 3ms gcc 14.2.0
c 1-m.c 35ms 1.3ms 14.9MB 103ms 0ms clang 14.0.0-1ubuntu1.1
d 1-m.d 93ms 10.0ms 39.2MB 233ms 3ms ldc2 1.40.0
d 1-m.d 183ms 8.9ms 44.1MB 557ms 7ms dmd 2.109.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 115ms 1.1ms 5.9MB 100ms 10ms ldc2 1.40.0
d 1.d 169ms 2.3ms 8.1MB 160ms 0ms dmd 2.109.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 348ms 14ms 6.1MB 330ms 43ms ldc2 1.40.0
d 1.d 505ms 9.6ms 7.8MB 487ms 20ms dmd 2.109.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 50ms 1.2ms 4.0MB 43ms 0ms ldc2 1.40.0
d 1.d 78ms 2.3ms 8.1MB 67ms 3ms dmd 2.109.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1-mffi.c 207ms 11ms 9.4MB 763ms 10ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 257ms 3.9ms 6.6MB 780ms 0ms gcc 14.2.0
d 1.d 284ms 2.4ms 7.5MB 270ms 0ms ldc2 1.40.0
c 1-mffi.c 410ms 4.7ms 6.0MB 397ms 0ms zigcc 0.13.0
c 1-ffi.c 411ms 7.0ms 6.0MB 403ms 0ms zigcc 0.13.0
c 1-ffi.c 429ms 6.2ms 6.7MB 417ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 509ms 5.2ms 6.6MB 500ms 0ms gcc 14.2.0
d 1.d 1993ms 13ms 8.5MB 1980ms 0ms dmd 2.109.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 14ms 0.5ms 3.1MB 10ms 0ms ldc2 1.40.0
c 1-mffi.c 15ms 0.9ms 8.5MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 1-ffi.c 19ms 0.1ms 3.0MB 10ms 0ms zigcc 0.13.0
c 1-mffi.c 19ms 0.1ms 3.0MB 10ms 0ms zigcc 0.13.0
c 1-ffi.c 21ms 0.1ms 3.8MB 10ms 0ms clang 14.0.0-1ubuntu1.1
c 1-mffi.c 23ms 1.2ms 5.6MB 60ms 0ms gcc 14.2.0
c 1-ffi.c 24ms 0.3ms 3.6MB 17ms 0ms gcc 14.2.0
d 1.d 86ms 1.7ms 4.5MB 80ms 0ms dmd 2.109.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 894ms 6.6ms 312.8MB 857ms 37ms ldc2 1.40.0
d 1.d 1665ms 7.6ms 314.0MB 1790ms 33ms dmd 2.109.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 190ms 2.1ms 312.6MB 150ms 20ms ldc2 1.40.0
d 1.d 321ms 4.2ms 314.7MB 283ms 33ms dmd 2.109.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 233ms 2.3ms 1.5MB 223ms 0ms zigcc 0.13.0
c 5.c 280ms 2.5ms 1.5MB 270ms 0ms zigcc 0.13.0
c 8-i.c 289ms 1.5ms 2.1MB 280ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 291ms 2.9ms 2.3MB 280ms 0ms gcc 14.2.0
c 2.c 297ms 4.6ms 1.5MB 287ms 0ms zigcc 0.13.0
c 5.c 300ms 5.4ms 2.3MB 287ms 0ms gcc 14.2.0
c 5.c 301ms 3.6ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 303ms 3.9ms 2.1MB 293ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 317ms 4.6ms 2.3MB 307ms 0ms gcc 14.2.0
d 1.d 340ms 2.8ms 2.9MB 327ms 0ms ldc2 1.40.0
d 2.d 342ms 3.2ms 2.9MB 330ms 0ms ldc2 1.40.0
d 1.d 642ms 10ms 4.6MB 630ms 0ms dmd 2.109.1
d 2.d 1931ms 36ms 4.6MB 1923ms 0ms dmd 2.109.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 8-i.c 26ms 0.1ms 1.5MB 20ms 0ms zigcc 0.13.0
c 5.c 30ms 0.2ms 1.5MB 20ms 0ms zigcc 0.13.0
c 8-i.c 30ms 0.4ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
c 2.c 31ms 0.4ms 1.5MB 20ms 0ms zigcc 0.13.0
c 2.c 31ms 0.4ms 2.3MB 20ms 0ms gcc 14.2.0
c 5.c 32ms 0.8ms 2.1MB 20ms 0ms clang 14.0.0-1ubuntu1.1
c 5.c 32ms 0.5ms 2.3MB 20ms 0ms gcc 14.2.0
c 2.c 33ms 1.7ms 2.1MB 23ms 0ms clang 14.0.0-1ubuntu1.1
c 8-i.c 33ms 0.3ms 2.3MB 23ms 0ms gcc 14.2.0
d 1.d 37ms 0.2ms 2.9MB 30ms 0ms ldc2 1.40.0
d 2.d 37ms 0.2ms 2.9MB 30ms 0ms ldc2 1.40.0
d 1.d 67ms 2.1ms 4.8MB 60ms 0ms dmd 2.109.1
d 2.d 198ms 2.4ms 4.8MB 190ms 0ms dmd 2.109.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 247ms 8.8ms 40.9MB 227ms 3ms gcc 14.2.0
c 1.c 249ms 8.5ms 40.8MB 230ms 3ms clang 14.0.0-1ubuntu1.1
c 1.c 261ms 8.3ms 40.3MB 243ms 0ms zigcc 0.13.0
d 1.d 285ms 1.0ms 43.7MB 273ms 0ms ldc2 1.40.0
d 1.d 296ms 2.6ms 77.2MB 277ms 3ms dmd 2.109.1
d 2.d 798ms 3.1ms 47.7MB 777ms 10ms ldc2 1.40.0
d 2.d 1115ms 19ms 49.3MB 1100ms 0ms dmd 2.109.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 1.c 49ms 2.3ms 11.8MB 37ms 0ms gcc 14.2.0
c 1.c 50ms 3.8ms 11.5MB 40ms 0ms clang 14.0.0-1ubuntu1.1
c 1.c 55ms 3.7ms 11.0MB 43ms 0ms zigcc 0.13.0
d 1.d 58ms 2.9ms 13.7MB 47ms 3ms ldc2 1.40.0
d 1.d 62ms 1.1ms 23.9MB 47ms 3ms dmd 2.109.1
d 2.d 196ms 2.3ms 15.7MB 177ms 3ms ldc2 1.40.0
d 2.d 274ms 1.6ms 17.6MB 260ms 0ms dmd 2.109.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2279ms 10ms 8.1MB 2257ms 343ms ldc2 1.40.0
d 1.d 4137ms 6.5ms 10.4MB 4090ms 407ms dmd 2.109.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 556ms 21ms 8.1MB 560ms 100ms ldc2 1.40.0
d 1.d 983ms 5.3ms 10.2MB 927ms 133ms dmd 2.109.1

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 553ms 3.0ms 171.3MB 723ms 17ms ldc2 1.40.0
d 3.d 1264ms 9.1ms 173.4MB 1433ms 23ms dmd 2.109.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 64ms 4.9ms 24.0MB 73ms 0ms ldc2 1.40.0
d 3.d 131ms 1.5ms 26.8MB 140ms 3ms dmd 2.109.1

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 4529ms 4.4ms 4.0MB 4503ms 303ms ldc2 1.40.0
d 1.d timeout 0.0ms 6.6MB 4983ms 247ms dmd 2.109.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1140ms 11ms 4.0MB 1110ms 90ms ldc2 1.40.0
d 1.d 1900ms 9.8ms 6.6MB 1893ms 83ms dmd 2.109.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 912ms 4.9ms 4.1MB 3580ms 0ms gcc 14.2.0
c 6-im.c 916ms 6.9ms 4.1MB 3603ms 0ms gcc 14.2.0
c 6-im.c 957ms 5.6ms 7.3MB 3750ms 3ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1032ms 4.9ms 4.1MB 4060ms 0ms gcc 14.2.0
c 4-m.c 1101ms 27ms 5.1MB 4260ms 13ms clang 14.0.0-1ubuntu1.1
c 5-im.c 1258ms 3.2ms 5.2MB 4933ms 7ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1730ms 10ms 7.2MB 6810ms 3ms clang 14.0.0-1ubuntu1.1
c 3-m.c 1868ms 12ms 4.1MB 7353ms 7ms gcc 14.2.0
d 1.d 3388ms 14ms 4.0MB 3377ms 0ms ldc2 1.40.0
d 1.d 3420ms 19ms 5.8MB 3410ms 0ms dmd 2.109.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 242ms 7.9ms 4.0MB 927ms 0ms gcc 14.2.0
c 6-im.c 249ms 5.3ms 5.3MB 937ms 3ms clang 14.0.0-1ubuntu1.1
c 6-im.c 250ms 20ms 4.0MB 937ms 0ms gcc 14.2.0
c 4-m.c 272ms 1.5ms 5.1MB 1027ms 0ms clang 14.0.0-1ubuntu1.1
c 5-im.c 278ms 9.7ms 4.0MB 1050ms 0ms gcc 14.2.0
c 5-im.c 327ms 5.4ms 5.3MB 1250ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 452ms 20ms 7.3MB 1713ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 477ms 2.5ms 4.0MB 1860ms 0ms gcc 14.2.0
d 1.d 854ms 19ms 3.5MB 840ms 0ms ldc2 1.40.0
d 1.d 859ms 2.7ms 5.3MB 847ms 0ms dmd 2.109.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
c 4-m.c 67ms 0.5ms 4.0MB 233ms 0ms gcc 14.2.0
c 6-im.c 69ms 3.3ms 7.3MB 240ms 0ms clang 14.0.0-1ubuntu1.1
c 6-im.c 70ms 6.7ms 4.0MB 240ms 0ms gcc 14.2.0
c 5-im.c 76ms 1.5ms 4.0MB 270ms 0ms gcc 14.2.0
c 4-m.c 83ms 7.1ms 5.0MB 277ms 7ms clang 14.0.0-1ubuntu1.1
c 5-im.c 89ms 2.8ms 5.1MB 320ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 117ms 2.1ms 5.1MB 417ms 0ms clang 14.0.0-1ubuntu1.1
c 3-m.c 126ms 1.7ms 4.0MB 470ms 0ms gcc 14.2.0
d 1.d 214ms 0.7ms 3.1MB 200ms 0ms ldc2 1.40.0
d 1.d 223ms 4.2ms 4.8MB 213ms 0ms dmd 2.109.1