Programming Language and compiler
Benchmarks

Ruby VS Java 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
java 2.java 467ms 1.5ms 646.0MB 567ms 97ms openjdk 23
java 2-m.java 468ms 12ms 645.0MB 687ms 90ms graal/jvm 17.0.8
java 2.java 498ms 2.1ms 572.9MB 563ms 113ms openjdk 21
java 2.java 1170ms 8.1ms 1044.5MB 570ms 760ms openjdk/zgc 21
ruby 1.rb 4697ms 14ms 109.5MB 4587ms 90ms ruby/yjit 3.4.1
ruby 1.rb timeout 0.0ms 70.1MB 4937ms 50ms ruby 3.4.1
ruby 1.rb timeout 0.0ms 782.5MB 6640ms 683ms truffleruby 24.1.2

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2.java 126ms 6.8ms 96.2MB 147ms 40ms openjdk 23
java 2.java 127ms 1.9ms 168.9MB 160ms 23ms openjdk 21
java 2-m.java 150ms 3.7ms 231.2MB 210ms 67ms graal/jvm 17.0.8
java 2.java 307ms 4.8ms 241.9MB 163ms 197ms openjdk/zgc 21
ruby 1.rb 478ms 0.8ms 20.4MB 460ms 7ms ruby/yjit 3.4.1
ruby 1-m.rb 593ms 65ms 442.1MB 1223ms 143ms truffleruby 24.1.2
ruby 1.rb 945ms 11ms 19.6MB 920ms 13ms ruby 3.4.1

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 1399ms 20ms 63.9MB 1310ms 70ms ruby/yjit 3.4.1
java 1-m.java 1791ms 170ms 260.0MB 6683ms 143ms openjdk 21
ruby 1.rb 1850ms 15ms 63.3MB 1773ms 60ms ruby 3.4.1
java 1-m.java 2251ms 168ms 241.1MB 8537ms 117ms openjdk 23
java 1-m.java 2654ms 330ms 1215.5MB 8333ms 1107ms openjdk/zgc 21
ruby 1.rb timeout 0.0ms 720.1MB 4753ms 1447ms truffleruby 24.1.2

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 160ms 5.4ms 25.8MB 120ms 27ms ruby/yjit 3.4.1
ruby 1.rb 181ms 4.2ms 25.1MB 147ms 20ms ruby 3.4.1
java 1-m.java 394ms 20ms 91.7MB 1290ms 50ms openjdk 23
java 1-m.java 424ms 15ms 123.3MB 1383ms 63ms openjdk 21
java 1-m.java 649ms 27ms 221.3MB 1693ms 260ms openjdk/zgc 21
ruby 1.rb timeout 0.0ms 698.9MB 4753ms 1487ms truffleruby 24.1.2

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 4.java 443ms 2.7ms 106.4MB 627ms 30ms graal/jvm 17.0.8
java 4.java 452ms 4.1ms 47.5MB 537ms 20ms openjdk 21
java 4.java 457ms 2.3ms 49.1MB 537ms 27ms openjdk 23
java 4.java 563ms 2.8ms 45.2MB 537ms 130ms openjdk/zgc 21
ruby 6.rb 2040ms 8.8ms 23.1MB 2023ms 0ms ruby/yjit 3.4.1
ruby 6-m.rb 2230ms 140ms 416.5MB 5760ms 373ms truffleruby 24.1.2
ruby 6.rb 3691ms 41ms 22.5MB 3663ms 13ms ruby 3.4.1

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 4.java 125ms 1.5ms 46.5MB 167ms 10ms openjdk 21
java 4-m.java 125ms 2.0ms 47.9MB 170ms 20ms openjdk 23
java 4-m.java 130ms 6.6ms 92.6MB 180ms 33ms graal/jvm 17.0.8
java 4.java 239ms 4.5ms 46.0MB 160ms 133ms openjdk/zgc 21
ruby 6.rb 281ms 27ms 15.2MB 257ms 10ms ruby/yjit 3.4.1
ruby 6.rb 424ms 3.1ms 14.5MB 403ms 3ms ruby 3.4.1
ruby 6-m.rb 803ms 10ms 383.2MB 1957ms 183ms truffleruby 24.1.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 39ms 0.6ms 162.9MB 12ms 28ms truffleruby 24.1.2
ruby 1.rb 52ms 1.6ms 13.3MB 34ms 6ms ruby/yjit 3.4.1
ruby 1.rb 54ms 1.5ms 12.9MB 40ms 2ms ruby 3.4.1
java 1.java 64ms 1.6ms 54.9MB 66ms 18ms graal/jvm 17.0.8
java 1.java 71ms 6.1ms 43.9MB 80ms 16ms openjdk 21
java 1.java 72ms 6.3ms 44.7MB 70ms 20ms openjdk 23
java 1.java 186ms 4.8ms 44.6MB 90ms 126ms openjdk/zgc 21

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 248ms 0.9ms 30.0MB 227ms 10ms ruby/yjit 3.4.1
ruby 1.rb 252ms 5.7ms 29.5MB 220ms 17ms ruby 3.4.1
ruby 1-m.rb 4601ms 279ms 548.8MB 12067ms 347ms truffleruby 24.1.2

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 2071ms 5.8ms 133.2MB 1977ms 77ms ruby 3.4.1
ruby 1.rb 2092ms 22ms 132.9MB 2007ms 70ms ruby/yjit 3.4.1
ruby 1.rb timeout 0.0ms 493.0MB 13207ms 337ms truffleruby 24.1.2

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 332ms 2.7ms 13.6MB 317ms 0ms ruby/yjit 3.4.1
ruby 1.rb 528ms 2.0ms 13.0MB 507ms 3ms ruby 3.4.1
ruby 1-m.rb 687ms 26ms 371.7MB 1250ms 123ms truffleruby 24.1.2

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 879ms 7.2ms 13.6MB 860ms 3ms ruby/yjit 3.4.1
ruby 1-m.rb 1238ms 26ms 415.6MB 1737ms 157ms truffleruby 24.1.2
ruby 1.rb 1475ms 7.8ms 13.0MB 1457ms 3ms ruby 3.4.1

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
ruby 1.rb 193ms 0.3ms 13.6MB 177ms 3ms ruby/yjit 3.4.1
ruby 1.rb 294ms 3.6ms 12.9MB 273ms 7ms ruby 3.4.1
ruby 1-m.rb 519ms 28ms 368.2MB 1017ms 127ms truffleruby 24.1.2

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1-m.java 397ms 2.9ms 630.4MB 593ms 97ms graal/jvm 17.0.8
java 1.java 401ms 1.0ms 537.3MB 483ms 103ms openjdk 23
java 1.java 401ms 4.9ms 679.9MB 467ms 90ms openjdk 21
java 1.java 1072ms 7.5ms 966.2MB 473ms 723ms openjdk/zgc 21
ruby 1-m.rb 4708ms 225ms 552.6MB 12003ms 397ms truffleruby 24.1.2
ruby 1.rb timeout 0.0ms 93.6MB 4947ms 40ms ruby 3.4.1
ruby 1.rb timeout 0.0ms 97.4MB 4930ms 53ms ruby/yjit 3.4.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1-m.java 164ms 3.1ms 207.5MB 237ms 40ms openjdk 21
java 1-m.java 164ms 2.2ms 160.1MB 243ms 37ms openjdk 23
java 1-m.java 207ms 1.6ms 255.6MB 343ms 57ms graal/jvm 17.0.8
java 1.java 432ms 23ms 343.8MB 200ms 307ms openjdk/zgc 21
ruby 1-m.rb 2277ms 144ms 640.9MB 5863ms 277ms truffleruby 24.1.2
ruby 1.rb 3244ms 3.3ms 38.4MB 3200ms 23ms ruby/yjit 3.4.1
ruby 1.rb 4268ms 4.5ms 37.6MB 4237ms 17ms ruby 3.4.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 441ms 1.3ms 45.2MB 483ms 17ms openjdk 21
java 1.java 445ms 3.9ms 48.2MB 477ms 23ms openjdk 23
java 1.java 445ms 1.7ms 87.1MB 467ms 30ms graal/jvm 17.0.8
java 1.java 565ms 2.0ms 44.6MB 497ms 127ms openjdk/zgc 21
ruby 2.rb 837ms 3.1ms 329.6MB 1080ms 117ms truffleruby 24.1.2
java 2.java 1252ms 33ms 588.1MB 1390ms 83ms openjdk 21
java 2.java 1255ms 8.3ms 753.6MB 1367ms 107ms openjdk 23
java 2.java 3285ms 56ms 2475.9MB 1647ms 1840ms openjdk/zgc 21
ruby 2.rb timeout 0.0ms 12.9MB 4983ms 3ms ruby 3.4.1
ruby 2.rb timeout 0.0ms 13.6MB 4980ms 3ms ruby/yjit 3.4.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 118ms 1.2ms 45.1MB 153ms 20ms openjdk 21
java 1.java 123ms 1.7ms 47.9MB 153ms 20ms openjdk 23
java 1.java 123ms 6.2ms 87.3MB 157ms 27ms graal/jvm 17.0.8
java 1.java 237ms 4.3ms 44.7MB 157ms 137ms openjdk/zgc 21
java 2-m.java 299ms 2.8ms 344.9MB 437ms 53ms openjdk 21
java 2-m.java 311ms 5.4ms 346.3MB 443ms 70ms openjdk 23
ruby 2-m.rb 321ms 1.6ms 325.2MB 553ms 120ms truffleruby 24.1.2
java 2.java 689ms 16ms 525.9MB 463ms 403ms openjdk/zgc 21
ruby 2.rb 1057ms 1.2ms 13.6MB 1037ms 7ms ruby/yjit 3.4.1
ruby 2.rb 2773ms 54ms 12.9MB 2760ms 0ms ruby 3.4.1

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 402ms 0.4ms 118.1MB 447ms 20ms openjdk 23
java 1.java 409ms 10ms 115.0MB 467ms 17ms openjdk 21
java 1.java 566ms 4.4ms 112.7MB 467ms 160ms openjdk/zgc 21
java 1-m.java 613ms 19ms 236.5MB 893ms 70ms graal/jvm 17.0.8
java 2.java 783ms 1.3ms 57.6MB 843ms 20ms openjdk 21
java 2.java 788ms 14ms 60.7MB 843ms 17ms openjdk 23
java 2.java 838ms 5.5ms 53.0MB 770ms 140ms openjdk/zgc 21
java 2-m.java 1347ms 43ms 203.8MB 2387ms 103ms graal/jvm 17.0.8
ruby 1.rb timeout 0.0ms 325.4MB 4850ms 137ms ruby 3.4.1
ruby 1.rb timeout 0.0ms 327.0MB 4850ms 130ms ruby/yjit 3.4.1
ruby 1.rb timeout 0.0ms 756.9MB 5047ms 177ms truffleruby 24.1.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 155ms 5.6ms 68.1MB 207ms 20ms openjdk 23
java 1.java 157ms 1.5ms 64.9MB 207ms 17ms openjdk 21
java 1-m.java 200ms 4.4ms 130.6MB 273ms 43ms graal/jvm 17.0.8
java 2.java 260ms 2.9ms 50.2MB 320ms 23ms openjdk 21
java 2.java 266ms 6.5ms 50.5MB 307ms 23ms openjdk 23
java 1.java 285ms 4.9ms 63.4MB 210ms 140ms openjdk/zgc 21
java 2.java 365ms 1.7ms 47.4MB 303ms 133ms openjdk/zgc 21
java 2-m.java 486ms 11ms 151.2MB 857ms 67ms graal/jvm 17.0.8
ruby 1-m.rb 1816ms 30ms 491.5MB 2583ms 167ms truffleruby 24.1.2
ruby 1.rb 3401ms 20ms 131.9MB 3310ms 77ms ruby/yjit 3.4.1
ruby 1.rb 4444ms 10ms 131.1MB 4360ms 70ms ruby 3.4.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 3183ms 10ms 374.6MB 3637ms 103ms graal/jvm 17.0.8
java 1.java 3692ms 33ms 412.3MB 4563ms 97ms openjdk 23
java 1.java 3696ms 87ms 425.5MB 4553ms 100ms openjdk 21
java 1.java timeout 0.0ms 1870.9MB 4497ms 1297ms openjdk/zgc 21
ruby 1.rb timeout 0.0ms 46.4MB 4927ms 60ms ruby 3.4.1
ruby 1.rb timeout 0.0ms 127.6MB 4890ms 93ms ruby/yjit 3.4.1
ruby 1.rb timeout 0.0ms 468.1MB 13257ms 403ms truffleruby 24.1.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1.java 874ms 7.9ms 373.7MB 1197ms 107ms graal/jvm 17.0.8
java 1-m.java 1011ms 13ms 402.8MB 1770ms 103ms openjdk 23
java 1-m.java 1012ms 39ms 351.1MB 1780ms 100ms openjdk 21
ruby 1.rb 1642ms 9.1ms 46.0MB 1593ms 33ms ruby 3.4.1
ruby 1.rb 1760ms 12ms 127.6MB 1617ms 130ms ruby/yjit 3.4.1
ruby 1-m.rb 1824ms 19ms 420.6MB 4793ms 207ms truffleruby 24.1.2
java 1.java 2009ms 52ms 1383.0MB 1723ms 1053ms openjdk/zgc 21

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 1963ms 2.5ms 47.3MB 7453ms 20ms openjdk 21
java 2-m.java 1965ms 7.5ms 48.6MB 7467ms 17ms openjdk 23
java 2-m.java 2080ms 2.7ms 45.3MB 7453ms 143ms openjdk/zgc 21
java 2-m.java 2480ms 17ms 98.9MB 8800ms 40ms graal/jvm 17.0.8
ruby 4.rb timeout 0.0ms 13.0MB 4980ms 7ms ruby 3.4.1
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 3ms ruby/yjit 3.4.1
ruby 4.rb timeout 0.0ms 448.7MB 5180ms 220ms truffleruby 24.1.2

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 592ms 8.0ms 47.7MB 2083ms 13ms openjdk 21
java 2-m.java 592ms 6.7ms 48.8MB 2033ms 30ms openjdk 23
java 2-m.java 712ms 1.7ms 45.3MB 2087ms 133ms openjdk/zgc 21
java 2-m.java 739ms 6.2ms 98.0MB 2493ms 37ms graal/jvm 17.0.8
ruby 4.rb 4530ms 33ms 454.5MB 4833ms 187ms truffleruby 24.1.2
ruby 4.rb timeout 0.0ms 12.9MB 4980ms 7ms ruby 3.4.1
ruby 4.rb timeout 0.0ms 13.6MB 4980ms 10ms ruby/yjit 3.4.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 2-m.java 246ms 3.6ms 48.5MB 717ms 20ms openjdk 23
java 2-m.java 247ms 13ms 47.4MB 710ms 23ms openjdk 21
java 2-m.java 285ms 13ms 96.7MB 827ms 40ms graal/jvm 17.0.8
java 2-m.java 355ms 6.7ms 47.3MB 680ms 137ms openjdk/zgc 21
ruby 4.rb 1303ms 67ms 435.1MB 1637ms 147ms truffleruby 24.1.2
ruby 4.rb timeout 0.0ms 13.0MB 4977ms 7ms ruby 3.4.1
ruby 4.rb timeout 0.0ms 13.8MB 4977ms 10ms ruby/yjit 3.4.1