Programming Language and compiler
Benchmarks

D VS C++ benchmarks

Current benchmark data was generated on Thu Feb 01 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 1779ms 2.9ms 312.5MB 1747ms 33ms ldc2 1.36.0
d 1.d 2563ms 15ms 314.0MB 2717ms 53ms dmd 2.106.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 163ms 0.8ms 208.7MB 133ms 13ms ldc2 1.36.0
d 1.d 224ms 4.1ms 210.7MB 193ms 13ms dmd 2.106.1

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 4960ms 23ms dmd 2.106.1
d 1.d timeout 0.0ms 15.5MB 4967ms 20ms ldc2 1.36.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1000ms 15ms 8.4MB 987ms 3ms ldc2 1.36.0
d 1.d 1350ms 2.3ms 10.5MB 1327ms 13ms dmd 2.106.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2528ms 1.4ms 8.0MB 2513ms 3ms ldc2 1.36.0
d 1.d 2873ms 6.8ms 10.0MB 2863ms 3ms dmd 2.106.1

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 438ms 1.2ms 8.1MB 427ms 0ms ldc2 1.36.0
d 1.d 523ms 0.9ms 10.0MB 520ms 0ms dmd 2.106.1

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 377ms 1.3ms 5.1MB 1410ms 0ms ldc2 1.36.0
cpp 1-im.cpp 404ms 1.1ms 4.7MB 1547ms 0ms g++ 11.4.0
cpp 1-im.cpp 407ms 3.0ms 7.9MB 1560ms 7ms clang++ 14.0.0-1ubuntu1.1
d 2-im.d 1098ms 3.6ms 5.1MB 4300ms 0ms ldc2 1.36.0
d 1-i.d 1487ms 3.8ms 2.9MB 1477ms 0ms ldc2 1.36.0
d 1.d 3201ms 46ms 2.8MB 3190ms 0ms ldc2 1.36.0
d 2-i.d 3209ms 2.9ms 2.9MB 3197ms 0ms ldc2 1.36.0
d 1.d 3516ms 4.8ms 4.5MB 3507ms 0ms dmd 2.106.1
d 1-im.d 4227ms 21ms 6.7MB 16463ms 7ms dmd 2.106.1
d 1-i.d timeout 0.0ms 4.4MB 4990ms 0ms dmd 2.106.1
d 2-i.d timeout 0.0ms 4.4MB 4990ms 0ms dmd 2.106.1
d 2-im.d timeout 0.0ms 8.7MB 19663ms 10ms dmd 2.106.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 39ms 1.4ms 5.2MB 107ms 0ms ldc2 1.36.0
cpp 1-im.cpp 43ms 0.6ms 5.9MB 133ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 43ms 0.4ms 4.5MB 140ms 0ms g++ 11.4.0
d 2-im.d 96ms 1.8ms 6.9MB 343ms 0ms ldc2 1.36.0
d 1-i.d 124ms 0.1ms 2.8MB 110ms 0ms ldc2 1.36.0
d 2-i.d 265ms 0.5ms 2.9MB 250ms 0ms ldc2 1.36.0
d 1.d 267ms 3.3ms 2.8MB 253ms 0ms ldc2 1.36.0
d 1.d 296ms 1.6ms 4.5MB 290ms 0ms dmd 2.106.1
d 1-im.d 367ms 18ms 8.7MB 1340ms 0ms dmd 2.106.1
d 2-im.d 526ms 7.6ms 8.6MB 2000ms 0ms dmd 2.106.1
d 1-i.d 858ms 2.1ms 4.6MB 847ms 0ms dmd 2.106.1
d 2-i.d 1373ms 13ms 4.4MB 1357ms 0ms dmd 2.106.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 194ms 1.3ms 33.3MB 177ms 3ms ldc2 1.36.0
d 1.d 612ms 2.2ms 38.6MB 590ms 7ms dmd 2.106.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 25ms 1.1ms 10.3MB 20ms 0ms ldc2 1.36.0
d 1.d 65ms 0.2ms 12.3MB 57ms 0ms dmd 2.106.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.0ms 1.4MB 0ms 0ms g++ 11.4.0
cpp 1.cpp 1.4ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1
d 1.d 1.7ms 0.1ms 3.0MB 0ms 0ms ldc2 1.36.0
d 1.d 2.2ms 0.1ms 4.9MB 0ms 0ms dmd 2.106.1

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2-m.d 3.4ms 5.9ms 18.5MB 405ms 710ms ldc2 1.36.0
d 1.d 1030ms 1.0ms 18.3MB 393ms 690ms ldc2 1.36.0
d 2.d 1032ms 3.0ms 25.3MB 553ms 677ms dmd 2.106.1
d 1.d 1036ms 0.9ms 22.0MB 533ms 700ms dmd 2.106.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1009ms 0.3ms 22.3MB 50ms 140ms ldc2 1.36.0
d 1.d 1012ms 2.4ms 25.3MB 80ms 133ms dmd 2.106.1
d 2.d 1012ms 2.6ms 20.6MB 63ms 130ms ldc2 1.36.0
d 2.d 1014ms 3.0ms 23.4MB 77ms 130ms dmd 2.106.1

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 59ms 1.4ms 15.8MB 57ms 13ms ldc2 1.36.0
d 2.d 235ms 1.6ms 22.9MB 237ms 7ms dmd 2.106.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 454ms 1.5ms 139.1MB 427ms 30ms ldc2 1.36.0
d 2.d 2447ms 6.1ms 158.3MB 2457ms 40ms dmd 2.106.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 685ms 10ms 52.1MB 2280ms 13ms ldc2 1.36.0
d 1-m.d 1894ms 13ms 54.0MB 5653ms 17ms dmd 2.106.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 88ms 3.2ms 39.2MB 237ms 7ms ldc2 1.36.0
d 1-m.d 196ms 5.4ms 41.5MB 583ms 13ms dmd 2.106.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 130ms 1.5ms 5.8MB 120ms 3ms ldc2 1.36.0
d 1.d 175ms 2.6ms 7.8MB 160ms 7ms dmd 2.106.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 373ms 2.0ms 4.1MB 360ms 13ms ldc2 1.36.0
d 1.d 508ms 1.6ms 7.8MB 497ms 10ms dmd 2.106.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 57ms 1.4ms 5.8MB 50ms 0ms ldc2 1.36.0
d 1.d 81ms 0.6ms 7.8MB 77ms 0ms dmd 2.106.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 322ms 1.3ms 7.4MB 310ms 0ms ldc2 1.36.0
d 1.d 2117ms 11ms 9.0MB 2103ms 0ms dmd 2.106.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 16ms 0.3ms 3.0MB 10ms 0ms ldc2 1.36.0
d 1.d 97ms 11ms 4.4MB 87ms 0ms dmd 2.106.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 976ms 4.9ms 312.5MB 930ms 43ms ldc2 1.36.0
d 1.d 1649ms 16ms 314.4MB 1770ms 37ms dmd 2.106.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 205ms 2.4ms 312.7MB 163ms 27ms ldc2 1.36.0
d 1.d 322ms 2.9ms 314.4MB 293ms 17ms dmd 2.106.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 167ms 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
cpp 0-i.cpp 172ms 3.6ms 2.3MB 163ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 313ms 1.4ms 1.9MB 300ms 0ms g++ 11.4.0
cpp 1.cpp 314ms 1.2ms 2.3MB 307ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 359ms 0.7ms 2.9MB 350ms 0ms ldc2 1.36.0
d 1.d 361ms 0.8ms 2.9MB 350ms 0ms ldc2 1.36.0
d 1.d 673ms 1.2ms 4.4MB 660ms 0ms dmd 2.106.1
d 2.d 2011ms 6.9ms 4.5MB 2000ms 0ms dmd 2.106.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.2ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.2ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.4ms 2.3MB 20ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.9ms 1.8MB 27ms 0ms g++ 11.4.0
d 1.d 39ms 0.6ms 2.9MB 30ms 0ms ldc2 1.36.0
d 2.d 39ms 0.4ms 2.9MB 27ms 0ms ldc2 1.36.0
d 1.d 71ms 1.0ms 4.5MB 60ms 0ms dmd 2.106.1
d 2.d 206ms 3.5ms 4.4MB 193ms 0ms dmd 2.106.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 315ms 1.5ms 43.8MB 300ms 3ms ldc2 1.36.0
d 1.d 340ms 4.4ms 77.1MB 320ms 7ms dmd 2.106.1
cpp 1.cpp 484ms 2.6ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 2.3ms 7.8MB 513ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 812ms 0.6ms 47.7MB 787ms 10ms ldc2 1.36.0
d 2.d 1117ms 1.8ms 49.3MB 1093ms 7ms dmd 2.106.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 65ms 0.3ms 13.8MB 53ms 0ms ldc2 1.36.0
d 1.d 73ms 2.1ms 23.8MB 63ms 0ms dmd 2.106.1
cpp 1.cpp 120ms 1.4ms 3.6MB 110ms 0ms g++ 11.4.0
cpp 1.cpp 131ms 1.3ms 4.1MB 120ms 0ms clang++ 14.0.0-1ubuntu1.1
d 2.d 202ms 0.7ms 15.7MB 183ms 3ms ldc2 1.36.0
d 2.d 280ms 1.1ms 17.4MB 267ms 3ms dmd 2.106.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2398ms 6.8ms 8.1MB 2340ms 393ms ldc2 1.36.0
d 1.d 4263ms 7.9ms 10.1MB 4213ms 427ms dmd 2.106.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 578ms 1.2ms 8.0MB 550ms 97ms ldc2 1.36.0
d 1.d 1015ms 2.9ms 10.0MB 1003ms 87ms dmd 2.106.1

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 601ms 7.0ms 172.0MB 777ms 20ms ldc2 1.36.0
d 3.d 1276ms 0.9ms 174.9MB 1450ms 37ms dmd 2.106.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 67ms 1.4ms 23.6MB 70ms 3ms ldc2 1.36.0
d 3.d 138ms 4.7ms 27.5MB 150ms 3ms dmd 2.106.1

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 4839ms 54ms 4.0MB 4823ms 303ms ldc2 1.36.0
d 1.d timeout 0.0ms 6.4MB 4977ms 243ms dmd 2.106.1

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1210ms 4.9ms 3.9MB 1197ms 80ms ldc2 1.36.0
d 1.d 2023ms 5.4ms 6.3MB 2027ms 73ms dmd 2.106.1

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 479ms 0.8ms 4.2MB 1863ms 0ms g++ 11.4.0
cpp 8-m.cpp 482ms 26ms 7.3MB 1840ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 916ms 3.0ms 5.3MB 3587ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 917ms 3.4ms 4.3MB 3607ms 0ms g++ 11.4.0
d 1.d 3582ms 3.5ms 3.9MB 3567ms 0ms ldc2 1.36.0
d 1.d 3609ms 12ms 5.8MB 3600ms 0ms dmd 2.106.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 126ms 0.2ms 7.3MB 450ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 128ms 0.2ms 4.1MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 238ms 0.4ms 5.4MB 890ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 242ms 4.2ms 4.2MB 907ms 0ms g++ 11.4.0
d 1.d 897ms 1.0ms 3.5MB 880ms 0ms ldc2 1.36.0
d 1.d 907ms 1.8ms 5.3MB 900ms 0ms dmd 2.106.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 38ms 0.6ms 7.3MB 107ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 44ms 8.7ms 4.0MB 140ms 0ms g++ 11.4.0
cpp 6-im.cpp 67ms 0.9ms 5.4MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.2ms 4.2MB 237ms 0ms g++ 11.4.0
d 1.d 229ms 0.4ms 3.1MB 217ms 0ms ldc2 1.36.0
d 1.d 232ms 2.4ms 5.0MB 223ms 0ms dmd 2.106.1