Programming Language and compiler
Benchmarks

D VS Ruby benchmarks

Current benchmark data was generated on Tue Jul 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

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2206ms 5.4ms 312.8MB 2170ms 43ms ldc2 1.41.0
d 1.d 3040ms 21ms 314.5MB 3210ms 57ms dmd 2.111.0
ruby 1-m.rb 4407ms 191ms 804.1MB 6390ms 450ms truffleruby 24.2.1
ruby 1.rb 4955ms 35ms 109.4MB 4853ms 87ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 70.5MB 4940ms 40ms ruby 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 207ms 3.1ms 207.9MB 183ms 13ms ldc2 1.41.0
d 1.d 262ms 1.5ms 210.9MB 233ms 13ms dmd 2.111.0
ruby 1.rb 505ms 6.5ms 20.3MB 480ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 570ms 55ms 424.9MB 1133ms 167ms truffleruby 24.2.1
ruby 1.rb 967ms 21ms 19.5MB 943ms 10ms ruby 3.4.4

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 1446ms 22ms 63.8MB 1363ms 67ms ruby/yjit 3.4.4
ruby 1.rb 1861ms 20ms 63.0MB 1787ms 63ms ruby 3.4.4
d 1.d timeout 0.0ms 16.5MB 4957ms 30ms dmd 2.111.0
d 1.d timeout 0.0ms 16.6MB 4963ms 23ms ldc2 1.41.0
ruby 1.rb timeout 0.0ms 327.3MB 4810ms 1417ms truffleruby 24.2.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 155ms 1.3ms 25.6MB 127ms 17ms ruby/yjit 3.4.4
ruby 1.rb 184ms 1.1ms 25.0MB 157ms 17ms ruby 3.4.4
d 1.d 1049ms 6.5ms 10.3MB 1020ms 17ms ldc2 1.41.0
d 1.d 1387ms 5.6ms 12.1MB 1367ms 10ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 351.7MB 4637ms 1527ms truffleruby 24.2.1

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2551ms 3.5ms 8.0MB 2540ms 0ms ldc2 1.41.0
d 1.d 2871ms 10ms 10.5MB 2860ms 0ms dmd 2.111.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 444ms 2.0ms 8.1MB 437ms 0ms ldc2 1.41.0
d 1.d 517ms 1.2ms 10.5MB 510ms 0ms dmd 2.111.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 373ms 5.6ms 3.1MB 1427ms 0ms ldc2 1.41.0
d 2-im.d 1114ms 9.3ms 3.0MB 4320ms 0ms ldc2 1.41.0
d 1-i.d 1488ms 1.7ms 2.9MB 1480ms 0ms ldc2 1.41.0
d 1.d 3143ms 19ms 2.9MB 3130ms 0ms ldc2 1.41.0
d 2-i.d 3232ms 3.6ms 2.9MB 3223ms 0ms ldc2 1.41.0
d 1.d 3544ms 3.7ms 4.6MB 3533ms 0ms dmd 2.111.0
d 1-im.d 4461ms 9.7ms 5.3MB 17560ms 0ms dmd 2.111.0
d 1-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
d 2-i.d timeout 0.0ms 4.6MB 4990ms 0ms dmd 2.111.0
d 2-im.d timeout 0.0ms 4.9MB 19740ms 20ms dmd 2.111.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-im.d 36ms 0.9ms 3.1MB 110ms 0ms ldc2 1.41.0
d 2-im.d 98ms 1.6ms 3.0MB 347ms 0ms ldc2 1.41.0
d 1-i.d 124ms 0.3ms 2.9MB 120ms 0ms ldc2 1.41.0
d 1.d 265ms 3.5ms 2.9MB 257ms 0ms ldc2 1.41.0
d 2-i.d 266ms 1.0ms 2.9MB 260ms 0ms ldc2 1.41.0
d 1.d 300ms 2.1ms 4.6MB 290ms 0ms dmd 2.111.0
d 1-im.d 402ms 34ms 4.8MB 1410ms 0ms dmd 2.111.0
d 2-im.d 524ms 3.0ms 4.9MB 2003ms 0ms dmd 2.111.0
d 1-i.d 887ms 8.9ms 4.5MB 877ms 0ms dmd 2.111.0
d 2-i.d 1393ms 4.6ms 4.5MB 1383ms 0ms dmd 2.111.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 109ms 0.2ms 2.9MB 100ms 0ms ldc2 1.41.0
d 1.d 641ms 3.8ms 4.9MB 630ms 0ms dmd 2.111.0
ruby 6.rb 2079ms 63ms 23.0MB 2053ms 10ms ruby/yjit 3.4.4
ruby 6-m.rb 2218ms 75ms 408.9MB 5653ms 337ms truffleruby 24.2.1
ruby 6.rb 3700ms 18ms 22.4MB 3673ms 10ms ruby 3.4.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 14ms 1.5ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 68ms 0.9ms 4.8MB 60ms 0ms dmd 2.111.0
ruby 6.rb 257ms 1.5ms 15.2MB 240ms 3ms ruby/yjit 3.4.4
ruby 6.rb 420ms 1.2ms 14.4MB 403ms 7ms ruby 3.4.4
ruby 6-m.rb 848ms 18ms 388.9MB 2133ms 180ms truffleruby 24.2.1

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 1.41.0
d 1.d 2.2ms 0.1ms 5.1MB 0ms 0ms dmd 2.111.0
ruby 1.rb 35ms 1.1ms 141.3MB 16ms 24ms truffleruby 24.2.1
ruby 1.rb 52ms 0.9ms 12.8MB 40ms 0ms ruby 3.4.4
ruby 1.rb 52ms 1.2ms 12.9MB 40ms 2ms ruby/yjit 3.4.4

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 59ms 1.7ms 15.7MB 63ms 7ms ldc2 1.41.0
d 2.d 241ms 3.0ms 22.5MB 247ms 3ms dmd 2.111.0
ruby 1.rb 259ms 6.8ms 28.8MB 233ms 10ms ruby 3.4.4
ruby 1.rb 260ms 1.6ms 30.1MB 230ms 17ms ruby/yjit 3.4.4
ruby 1-m.rb 4473ms 273ms 553.2MB 11820ms 333ms truffleruby 24.2.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 483ms 11ms 140.4MB 450ms 37ms ldc2 1.41.0
ruby 1.rb 2100ms 16ms 135.4MB 2017ms 73ms ruby 3.4.4
ruby 1.rb 2102ms 15ms 135.2MB 2013ms 73ms ruby/yjit 3.4.4
d 2.d 2474ms 16ms 158.3MB 2490ms 33ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 507.3MB 13217ms 343ms truffleruby 24.2.1

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 713ms 31ms 47.5MB 2403ms 10ms ldc2 1.41.0
d 1-m.d 2035ms 101ms 50.6MB 6757ms 17ms dmd 2.111.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1-m.d 100ms 4.7ms 39.5MB 263ms 10ms ldc2 1.41.0
d 1-m.d 257ms 16ms 41.0MB 737ms 17ms dmd 2.111.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 130ms 1.9ms 5.9MB 120ms 0ms ldc2 1.41.0
d 1.d 178ms 3.2ms 7.9MB 167ms 3ms dmd 2.111.0
ruby 1.rb 342ms 2.8ms 13.5MB 323ms 0ms ruby/yjit 3.4.4
ruby 1.rb 526ms 4.3ms 12.9MB 507ms 3ms ruby 3.4.4
ruby 1-m.rb 707ms 30ms 372.7MB 1240ms 147ms truffleruby 24.2.1

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 385ms 2.3ms 5.9MB 370ms 17ms ldc2 1.41.0
d 1.d 520ms 2.3ms 7.9MB 513ms 13ms dmd 2.111.0
ruby 1.rb 913ms 4.6ms 13.5MB 897ms 0ms ruby/yjit 3.4.4
ruby 1-m.rb 1253ms 6.5ms 411.5MB 1750ms 167ms truffleruby 24.2.1
ruby 1.rb 1478ms 32ms 12.9MB 1457ms 7ms ruby 3.4.4

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 58ms 1.2ms 5.9MB 50ms 0ms ldc2 1.41.0
d 1.d 79ms 1.3ms 8.1MB 67ms 0ms dmd 2.111.0
ruby 1.rb 198ms 2.3ms 13.5MB 180ms 10ms ruby/yjit 3.4.4
ruby 1.rb 289ms 3.7ms 12.8MB 270ms 7ms ruby 3.4.4
ruby 1-m.rb 530ms 42ms 354.3MB 1040ms 137ms truffleruby 24.2.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 367ms 0.5ms 7.5MB 360ms 0ms ldc2 1.41.0
d 1.d 2120ms 5.9ms 9.4MB 2107ms 0ms dmd 2.111.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 18ms 0.4ms 3.0MB 10ms 0ms ldc2 1.41.0
d 1.d 93ms 2.8ms 4.9MB 87ms 0ms dmd 2.111.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1134ms 3.1ms 312.6MB 1097ms 40ms ldc2 1.41.0
d 1.d 1870ms 15ms 314.9MB 2007ms 47ms dmd 2.111.0
ruby 1-m.rb 4269ms 456ms 556.4MB 10877ms 377ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 93.5MB 4947ms 40ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 97.2MB 4933ms 50ms ruby/yjit 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 232ms 1.5ms 312.8MB 190ms 30ms ldc2 1.41.0
d 1.d 361ms 4.2ms 314.8MB 330ms 30ms dmd 2.111.0
ruby 1-m.rb 1985ms 41ms 547.4MB 5130ms 257ms truffleruby 24.2.1
ruby 1.rb 3266ms 10ms 38.3MB 3233ms 20ms ruby/yjit 3.4.4
ruby 1.rb 4383ms 23ms 37.6MB 4340ms 27ms ruby 3.4.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 361ms 1.2ms 2.9MB 350ms 0ms ldc2 1.41.0
d 2.d 361ms 0.9ms 2.9MB 350ms 0ms ldc2 1.41.0
d 1.d 677ms 14ms 4.8MB 667ms 0ms dmd 2.111.0
ruby 2.rb 835ms 11ms 315.3MB 1080ms 117ms truffleruby 24.2.1
d 2.d 2033ms 5.4ms 4.8MB 2023ms 0ms dmd 2.111.0
ruby 2.rb timeout 0.0ms 12.8MB 4983ms 3ms ruby 3.4.4
ruby 2.rb timeout 0.0ms 13.5MB 4980ms 7ms ruby/yjit 3.4.4

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 39ms 0.6ms 2.9MB 30ms 0ms ldc2 1.41.0
d 2.d 39ms 0.7ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 71ms 1.2ms 4.6MB 60ms 0ms dmd 2.111.0
d 2.d 210ms 1.7ms 4.8MB 200ms 0ms dmd 2.111.0
ruby 2-m.rb 323ms 13ms 309.9MB 563ms 123ms truffleruby 24.2.1
ruby 2.rb 1026ms 2.7ms 13.5MB 1007ms 7ms ruby/yjit 3.4.4
ruby 2.rb 2901ms 120ms 12.8MB 2887ms 0ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 344ms 7.7ms 45.7MB 323ms 7ms ldc2 1.41.0
d 1.d 385ms 4.2ms 79.2MB 370ms 0ms dmd 2.111.0
d 2.d 854ms 0.6ms 49.7MB 833ms 10ms ldc2 1.41.0
d 2.d 1168ms 1.5ms 49.3MB 1150ms 10ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 325.3MB 4850ms 137ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 327.0MB 4857ms 130ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 731.6MB 5057ms 170ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 63ms 4.3ms 15.7MB 53ms 0ms ldc2 1.41.0
d 1.d 78ms 3.7ms 25.3MB 67ms 0ms dmd 2.111.0
d 2.d 211ms 1.2ms 17.8MB 200ms 0ms ldc2 1.41.0
d 2.d 297ms 1.9ms 19.7MB 280ms 0ms dmd 2.111.0
ruby 1-m.rb 1708ms 13ms 494.0MB 2480ms 177ms truffleruby 24.2.1
ruby 1.rb 3451ms 53ms 131.8MB 3363ms 73ms ruby/yjit 3.4.4
ruby 1.rb 4587ms 13ms 131.1MB 4493ms 77ms ruby 3.4.4

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2454ms 24ms 8.0MB 2420ms 417ms ldc2 1.41.0
d 1.d 4480ms 3.9ms 10.5MB 4400ms 500ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 46.4MB 4923ms 63ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 130.8MB 4903ms 83ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 451.3MB 13403ms 393ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 587ms 3.4ms 8.1MB 567ms 103ms ldc2 1.41.0
d 1.d 1068ms 6.3ms 10.4MB 1033ms 127ms dmd 2.111.0
ruby 1-m.rb 1666ms 261ms 414.4MB 4383ms 213ms truffleruby 24.2.1
ruby 1.rb 1783ms 63ms 130.9MB 1673ms 97ms ruby/yjit 3.4.4
ruby 1.rb 1814ms 58ms 130.3MB 1703ms 93ms ruby 3.4.4

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 584ms 5.1ms 172.3MB 770ms 20ms ldc2 1.41.0
d 3.d 1204ms 8.1ms 177.4MB 1390ms 27ms dmd 2.111.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 3.d 63ms 1.5ms 28.5MB 70ms 0ms ldc2 1.41.0
d 3.d 126ms 0.1ms 31.6MB 133ms 3ms dmd 2.111.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 4780ms 18ms 4.1MB 4747ms 363ms ldc2 1.41.0
d 1.d timeout 0.0ms 6.5MB 4950ms 303ms dmd 2.111.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1200ms 1.8ms 3.9MB 1177ms 93ms ldc2 1.41.0
d 1.d 2059ms 9.1ms 6.5MB 2030ms 123ms dmd 2.111.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3599ms 3.4ms 4.0MB 3590ms 0ms ldc2 1.41.0
d 1.d 3649ms 20ms 5.9MB 3640ms 0ms dmd 2.111.0
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.4
ruby 4.rb timeout 0.0ms 449.5MB 5163ms 247ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 903ms 2.0ms 3.5MB 893ms 0ms ldc2 1.41.0
d 1.d 917ms 3.9ms 5.3MB 907ms 0ms dmd 2.111.0
ruby 4.rb 4909ms 38ms 442.4MB 5200ms 217ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4983ms 3ms ruby/yjit 3.4.4

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 229ms 1.7ms 3.1MB 220ms 0ms ldc2 1.41.0
d 1.d 233ms 0.2ms 5.0MB 220ms 0ms dmd 2.111.0
ruby 4.rb 1458ms 5.9ms 388.7MB 1803ms 150ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 0ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4983ms 0ms ruby/yjit 3.4.4