Programming Language and compiler
Benchmarks

Swift VS D benchmarks

Current benchmark data was generated on Wed Jan 22 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
d 1.d 1725ms 4.6ms 312.6MB 1680ms 47ms ldc2 1.40.0
d 1.d 2672ms 23ms 314.9MB 2857ms 43ms dmd 2.109.1
swift 1.swift 2911ms 5.8ms 53.9MB 2883ms 17ms swift 6.0.3

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 161ms 3.0ms 209.0MB 130ms 17ms ldc2 1.40.0
d 1.d 231ms 1.5ms 210.0MB 197ms 20ms dmd 2.109.1
swift 1.swift 239ms 4.8ms 12.0MB 220ms 0ms swift 6.0.3

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 376ms 7.3ms 6.9MB 1413ms 0ms ldc2 1.40.0
d 2-im.d 1117ms 1.7ms 5.1MB 4290ms 0ms ldc2 1.40.0
d 1-i.d 1478ms 0.5ms 2.9MB 1470ms 0ms ldc2 1.40.0
swift 1.swift 2463ms 9.5ms 5.6MB 2450ms 0ms swift 6.0.3
d 1.d 3096ms 15ms 2.9MB 3087ms 0ms ldc2 1.40.0
d 2-i.d 3228ms 5.5ms 2.8MB 3213ms 0ms ldc2 1.40.0
d 1.d 3520ms 9.8ms 4.6MB 3510ms 0ms dmd 2.109.1
d 1-im.d 4244ms 30ms 6.9MB 16430ms 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 4.5MB 4990ms 0ms dmd 2.109.1
d 2-im.d timeout 0.0ms 6.7MB 19493ms 10ms dmd 2.109.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 38ms 2.6ms 6.9MB 110ms 0ms ldc2 1.40.0
d 2-im.d 99ms 1.3ms 5.3MB 343ms 0ms ldc2 1.40.0
d 1-i.d 123ms 0.3ms 2.8MB 113ms 0ms ldc2 1.40.0
swift 1.swift 212ms 2.8ms 5.6MB 200ms 0ms swift 6.0.3
d 1.d 260ms 1.3ms 2.9MB 247ms 0ms ldc2 1.40.0
d 2-i.d 267ms 1.0ms 2.8MB 257ms 0ms ldc2 1.40.0
d 1.d 295ms 1.7ms 4.6MB 283ms 0ms dmd 2.109.1
d 1-im.d 354ms 4.6ms 8.8MB 1347ms 3ms dmd 2.109.1
d 2-im.d 527ms 5.0ms 6.9MB 1993ms 0ms dmd 2.109.1
d 1-i.d 850ms 18ms 4.4MB 840ms 0ms dmd 2.109.1
d 2-i.d 1388ms 25ms 4.5MB 1380ms 0ms dmd 2.109.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 3-m.swift 140ms 3.0ms 24.8MB 380ms 3ms swift 6.0.3
d 1.d 195ms 0.9ms 48.8MB 170ms 10ms ldc2 1.40.0
d 1.d 621ms 2.2ms 43.8MB 610ms 3ms dmd 2.109.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 24ms 0.4ms 12.1MB 17ms 0ms ldc2 1.40.0
swift 3.swift 37ms 0.2ms 18.1MB 33ms 0ms swift 6.0.3
d 1.d 67ms 1.3ms 12.0MB 57ms 0ms dmd 2.109.1

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1.7ms 0.1ms 3.0MB 0ms 0ms ldc2 1.40.0
d 1.d 2.0ms 0.2ms 5.0MB 0ms 0ms dmd 2.109.1
swift 1.swift 2.3ms 0.2ms 6.0MB 0ms 0ms swift 6.0.3

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 634ms 17ms 50.2MB 2050ms 10ms ldc2 1.40.0
swift 2-m.swift 1401ms 19ms 72.6MB 5030ms 33ms swift 6.0.3
d 1-m.d 1865ms 22ms 54.5MB 5627ms 17ms dmd 2.109.1

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 112ms 9.7ms 40.9MB 253ms 23ms ldc2 1.40.0
d 1-m.d 199ms 5.6ms 41.9MB 597ms 23ms dmd 2.109.1
swift 2-m.swift 262ms 2.8ms 63.8MB 687ms 20ms swift 6.0.3

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
swift 7.swift 344ms 2.5ms 9.8MB 330ms 0ms swift 6.0.3
d 1.d 359ms 0.2ms 2.9MB 347ms 0ms ldc2 1.40.0
d 2.d 359ms 1.0ms 2.9MB 350ms 0ms ldc2 1.40.0
d 1.d 679ms 2.8ms 4.6MB 667ms 0ms dmd 2.109.1
d 2.d 2012ms 3.9ms 4.6MB 2000ms 0ms dmd 2.109.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 38ms 0.3ms 2.9MB 27ms 0ms ldc2 1.40.0
d 2.d 39ms 0.6ms 2.9MB 30ms 0ms ldc2 1.40.0
swift 7.swift 39ms 1.1ms 9.8MB 30ms 0ms swift 6.0.3
d 1.d 71ms 1.1ms 4.6MB 60ms 0ms dmd 2.109.1
d 2.d 204ms 0.8ms 4.6MB 190ms 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 2407ms 6.6ms 8.0MB 2363ms 383ms ldc2 1.40.0
d 1.d 4341ms 5.4ms 10.2MB 4200ms 520ms dmd 2.109.1
swift 1.swift timeout 0.0ms 7.1MB 4907ms 77ms swift 6.0.3

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 577ms 4.7ms 8.1MB 557ms 97ms ldc2 1.40.0
d 1.d 1057ms 7.4ms 10.2MB 1050ms 160ms dmd 2.109.1
swift 1.swift 1861ms 13ms 6.9MB 1840ms 3ms swift 6.0.3