Programming Language and compiler
Benchmarks

Ruby VS D benchmarks

Current benchmark data was generated on Mon Jun 23 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 2244ms 4.4ms 312.4MB 2210ms 43ms ldc2 1.41.0
d 1.d 3045ms 8.9ms 315.0MB 3220ms 50ms dmd 2.111.0
ruby 1.rb 4905ms 47ms 110.1MB 4803ms 87ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 70.5MB 4950ms 37ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 757.2MB 6760ms 690ms truffleruby 24.2.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 208ms 3.2ms 207.1MB 190ms 10ms ldc2 1.41.0
d 1.d 261ms 1.1ms 208.7MB 237ms 13ms dmd 2.111.0
ruby 1.rb 500ms 4.2ms 20.3MB 477ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 571ms 43ms 418.8MB 1113ms 167ms truffleruby 24.2.1
ruby 1.rb 948ms 9.8ms 19.5MB 927ms 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 1462ms 9.4ms 63.8MB 1387ms 60ms ruby/yjit 3.4.4
ruby 1.rb 1870ms 14ms 63.3MB 1797ms 60ms ruby 3.4.4
d 1.d timeout 0.0ms 18.2MB 4963ms 23ms dmd 2.111.0
d 1.d timeout 0.0ms 15.3MB 4957ms 27ms ldc2 1.41.0
ruby 1.rb timeout 0.0ms 329.4MB 4770ms 1413ms truffleruby 24.2.1

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 156ms 2.7ms 25.8MB 120ms 20ms ruby/yjit 3.4.4
ruby 1.rb 181ms 2.5ms 25.1MB 147ms 20ms ruby 3.4.4
d 1.d 1081ms 24ms 10.3MB 1053ms 17ms ldc2 1.41.0
d 1.d 1398ms 9.7ms 12.3MB 1370ms 13ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 342.9MB 4630ms 1483ms truffleruby 24.2.1

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 112ms 2.0ms 2.9MB 103ms 0ms ldc2 1.41.0
d 1.d 653ms 24ms 4.8MB 643ms 0ms dmd 2.111.0
ruby 6.rb 2028ms 6.4ms 23.0MB 2003ms 10ms ruby/yjit 3.4.4
ruby 6-m.rb 2281ms 208ms 390.3MB 5913ms 350ms truffleruby 24.2.1
ruby 6.rb 3700ms 25ms 22.4MB 3677ms 10ms ruby 3.4.4

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 15ms 1.4ms 2.9MB 10ms 0ms ldc2 1.41.0
d 1.d 68ms 1.5ms 4.8MB 60ms 0ms dmd 2.111.0
ruby 6.rb 302ms 71ms 15.2MB 287ms 3ms ruby/yjit 3.4.4
ruby 6.rb 419ms 3.5ms 14.5MB 400ms 3ms ruby 3.4.4
ruby 6-m.rb 825ms 52ms 388.8MB 2063ms 170ms 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 0.2ms 3.0MB 0ms 0ms ldc2 1.41.0
d 1.d 1.9ms 0.2ms 5.1MB 0ms 0ms dmd 2.111.0
ruby 1.rb 36ms 0.9ms 141.8MB 12ms 30ms truffleruby 24.2.1
ruby 1.rb 51ms 1.3ms 12.8MB 40ms 0ms ruby 3.4.4
ruby 1.rb 54ms 1.3ms 12.9MB 40ms 4ms 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 1.2ms 15.8MB 63ms 7ms ldc2 1.41.0
d 2.d 238ms 1.3ms 22.5MB 243ms 7ms dmd 2.111.0
ruby 1.rb 254ms 3.5ms 30.1MB 227ms 13ms ruby/yjit 3.4.4
ruby 1.rb 257ms 3.6ms 28.9MB 230ms 10ms ruby 3.4.4
ruby 1-m.rb 4425ms 158ms 530.8MB 11603ms 353ms truffleruby 24.2.1

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 472ms 2.8ms 139.9MB 443ms 33ms ldc2 1.41.0
ruby 1.rb 2081ms 8.6ms 134.5MB 1993ms 77ms ruby/yjit 3.4.4
ruby 1.rb 2099ms 21ms 133.4MB 2010ms 80ms ruby 3.4.4
d 2.d 2491ms 24ms 158.6MB 2507ms 40ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 595.2MB 13200ms 383ms truffleruby 24.2.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 133ms 2.9ms 5.9MB 127ms 3ms ldc2 1.41.0
d 1.d 175ms 1.0ms 8.0MB 163ms 3ms dmd 2.111.0
ruby 1.rb 342ms 2.7ms 13.5MB 323ms 7ms ruby/yjit 3.4.4
ruby 1.rb 530ms 6.8ms 12.9MB 513ms 3ms ruby 3.4.4
ruby 1-m.rb 675ms 36ms 370.2MB 1157ms 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 382ms 1.3ms 5.9MB 370ms 17ms ldc2 1.41.0
d 1.d 515ms 2.4ms 7.9MB 510ms 13ms dmd 2.111.0
ruby 1.rb 908ms 1.9ms 13.5MB 887ms 10ms ruby/yjit 3.4.4
ruby 1-m.rb 1250ms 4.8ms 410.5MB 1783ms 160ms truffleruby 24.2.1
ruby 1.rb 1469ms 7.6ms 12.8MB 1453ms 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 59ms 1.7ms 6.1MB 50ms 0ms ldc2 1.41.0
d 1.d 80ms 1.6ms 8.2MB 70ms 0ms dmd 2.111.0
ruby 1.rb 202ms 6.0ms 13.5MB 183ms 7ms ruby/yjit 3.4.4
ruby 1.rb 289ms 3.4ms 12.8MB 273ms 3ms ruby 3.4.4
ruby 1-m.rb 537ms 6.4ms 359.2MB 1050ms 143ms truffleruby 24.2.1

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 1113ms 6.0ms 312.4MB 1077ms 37ms ldc2 1.41.0
d 1.d 1847ms 15ms 314.6MB 1973ms 47ms dmd 2.111.0
ruby 1-m.rb 3904ms 35ms 557.5MB 9970ms 347ms truffleruby 24.2.1
ruby 1.rb timeout 0.0ms 93.5MB 4940ms 47ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 97.2MB 4940ms 47ms ruby/yjit 3.4.4

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 226ms 1.5ms 312.5MB 190ms 23ms ldc2 1.41.0
d 1.d 357ms 2.6ms 314.8MB 323ms 30ms dmd 2.111.0
ruby 1-m.rb 2022ms 35ms 597.2MB 5207ms 257ms truffleruby 24.2.1
ruby 1.rb 3278ms 18ms 38.4MB 3243ms 20ms ruby/yjit 3.4.4
ruby 1.rb 4357ms 20ms 37.6MB 4323ms 20ms ruby 3.4.4

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 2.d 361ms 1.5ms 2.9MB 350ms 0ms ldc2 1.41.0
d 1.d 361ms 1.0ms 2.9MB 350ms 0ms ldc2 1.41.0
d 1.d 683ms 2.8ms 4.6MB 673ms 0ms dmd 2.111.0
ruby 2.rb 831ms 18ms 310.8MB 1067ms 110ms truffleruby 24.2.1
d 2.d 2027ms 4.0ms 4.6MB 2017ms 0ms dmd 2.111.0
ruby 2.rb timeout 0.0ms 12.8MB 4983ms 0ms 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 38ms 0.4ms 2.9MB 30ms 0ms ldc2 1.41.0
d 2.d 39ms 0.4ms 2.9MB 30ms 0ms ldc2 1.41.0
d 1.d 71ms 1.3ms 4.8MB 60ms 0ms dmd 2.111.0
d 2.d 213ms 7.6ms 4.8MB 203ms 0ms dmd 2.111.0
ruby 2-m.rb 310ms 3.7ms 323.2MB 563ms 110ms truffleruby 24.2.1
ruby 2.rb 1029ms 3.6ms 13.5MB 1017ms 0ms ruby/yjit 3.4.4
ruby 2.rb 2937ms 80ms 12.8MB 2920ms 3ms ruby 3.4.4

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 326ms 4.7ms 45.7MB 310ms 0ms ldc2 1.41.0
d 1.d 378ms 9.9ms 79.3MB 360ms 3ms dmd 2.111.0
d 2.d 846ms 1.8ms 49.7MB 827ms 10ms ldc2 1.41.0
d 2.d 1175ms 4.5ms 51.7MB 1150ms 13ms 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 4840ms 140ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 726.3MB 5057ms 167ms truffleruby 24.2.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 62ms 2.9ms 15.7MB 50ms 0ms ldc2 1.41.0
d 1.d 76ms 1.4ms 25.3MB 60ms 0ms dmd 2.111.0
d 2.d 212ms 2.5ms 17.7MB 197ms 0ms ldc2 1.41.0
d 2.d 295ms 1.4ms 19.8MB 280ms 0ms dmd 2.111.0
ruby 1-m.rb 1705ms 21ms 478.0MB 2453ms 170ms truffleruby 24.2.1
ruby 1.rb 4023ms 798ms 131.8MB 3930ms 73ms ruby/yjit 3.4.4
ruby 1.rb 4558ms 108ms 131.0MB 4463ms 80ms ruby 3.4.4

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 2448ms 17ms 8.1MB 2423ms 410ms ldc2 1.41.0
d 1.d 4455ms 6.5ms 10.5MB 4357ms 523ms dmd 2.111.0
ruby 1.rb timeout 0.0ms 130.2MB 4873ms 113ms ruby 3.4.4
ruby 1.rb timeout 0.0ms 131.1MB 4867ms 123ms ruby/yjit 3.4.4
ruby 1.rb timeout 0.0ms 456.7MB 13337ms 400ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 585ms 1.9ms 8.1MB 563ms 107ms ldc2 1.41.0
d 1.d 1056ms 1.9ms 10.3MB 1033ms 117ms dmd 2.111.0
ruby 1-m.rb 1742ms 229ms 407.7MB 4603ms 207ms truffleruby 24.2.1
ruby 1.rb 1798ms 73ms 130.1MB 1690ms 93ms ruby 3.4.4
ruby 1.rb 1828ms 6.0ms 131.0MB 1690ms 123ms ruby/yjit 3.4.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 3601ms 8.6ms 6.1MB 3593ms 0ms ldc2 1.41.0
d 1.d 3668ms 32ms 8.4MB 3657ms 0ms dmd 2.111.0
ruby 4.rb timeout 0.0ms 12.9MB 4983ms 3ms 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 444.0MB 5170ms 240ms truffleruby 24.2.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
d 1.d 911ms 17ms 3.8MB 900ms 0ms ldc2 1.41.0
d 1.d 915ms 7.3ms 5.4MB 907ms 0ms dmd 2.111.0
ruby 4.rb 4929ms 35ms 450.6MB 5243ms 210ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.5MB 4987ms 0ms 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 1.2ms 3.1MB 220ms 0ms ldc2 1.41.0
d 1.d 235ms 1.0ms 5.0MB 223ms 0ms dmd 2.111.0
ruby 4.rb 1454ms 17ms 382.2MB 1783ms 143ms truffleruby 24.2.1
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 3ms ruby 3.4.4
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 0ms ruby/yjit 3.4.4