Programming Language and compiler
Benchmarks

Nim 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
nim 2.nim 781ms 16ms 34.9MB 757ms 10ms nim 2.2.0
nim 2.nim 959ms 4.6ms 35.2MB 943ms 3ms nim/clang 2.2.0
java 2.java 1170ms 8.1ms 1044.5MB 570ms 760ms openjdk/zgc 21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 72ms 1.1ms 5.5MB 60ms 0ms nim 2.2.0
nim 2.nim 91ms 1.4ms 5.8MB 80ms 0ms nim/clang 2.2.0
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

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
java 1-m.java 1791ms 170ms 260.0MB 6683ms 143ms openjdk 21
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
nim 1.nim timeout 0.0ms 545.4MB 2453ms 2093ms nim 2.2.0
nim 1.nim timeout 0.0ms 553.8MB 2483ms 2057ms nim/clang 2.2.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
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
nim 1.nim 4399ms 8.7ms 518.7MB 2090ms 1880ms nim/clang 2.2.0
nim 1.nim 4558ms 9.6ms 518.3MB 2237ms 1890ms nim 2.2.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 185ms 2.3ms 1.5MB 177ms 0ms nim 2.2.0
nim 2.nim 238ms 0.8ms 1.8MB 227ms 0ms nim/clang 2.2.0
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
nim 1.nim 578ms 7.8ms 1.8MB 453ms 110ms nim/clang 2.2.0
nim 1.nim 599ms 1.3ms 1.5MB 473ms 110ms nim 2.2.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 20ms 0.3ms 1.5MB 10ms 0ms nim 2.2.0
nim 2.nim 26ms 0.3ms 1.8MB 13ms 0ms nim/clang 2.2.0
nim 1.nim 60ms 0.5ms 1.8MB 37ms 10ms nim/clang 2.2.0
nim 1.nim 62ms 0.1ms 1.5MB 40ms 10ms nim 2.2.0
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

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.1ms 0.1ms 1.6MB 0ms 0ms nim 2.2.0
nim 1.nim 1.2ms 0.1ms 1.9MB 0ms 0ms nim/clang 2.2.0
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

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 977ms 12ms 98.8MB 270ms 683ms nim/clang 2.2.0
nim 1.nim 996ms 26ms 99.2MB 277ms 697ms nim 2.2.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 163ms 5.2ms 17.8MB 47ms 100ms nim 2.2.0
nim 1.nim 163ms 3.8ms 18.2MB 33ms 113ms nim/clang 2.2.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 110ms 1.6ms 1.6MB 100ms 0ms nim/clang 2.2.0
nim 2.nim 114ms 0.5ms 1.4MB 103ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 323ms 4.9ms 1.6MB 313ms 0ms nim/clang 2.2.0
nim 2.nim 337ms 4.4ms 1.4MB 323ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.0
nim 1.nim timeout 0.0ms 1.5MB 4987ms 0ms nim/clang 2.2.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 49ms 1.1ms 1.5MB 40ms 0ms nim/clang 2.2.0
nim 2.nim 50ms 0.3ms 1.3MB 40ms 0ms nim 2.2.0
nim 1.nim 493ms 4.9ms 1.5MB 480ms 0ms nim/clang 2.2.0
nim 1.nim 519ms 32ms 1.3MB 510ms 0ms nim 2.2.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 387ms 2.3ms 4.8MB 373ms 0ms nim/clang 2.2.0
nim 1.nim 577ms 1.3ms 4.7MB 567ms 0ms nim 2.2.0
java 1b.java 1158ms 25ms 55.3MB 1263ms 20ms openjdk 23
java 1b.java 1184ms 8.7ms 54.4MB 1307ms 23ms openjdk 21
java 1b.java 1214ms 57ms 116.0MB 1463ms 43ms graal/jvm 17.0.8
java 1.java 1260ms 13ms 130.3MB 1363ms 53ms graal/jvm 17.0.8
java 1b.java 1264ms 5.0ms 51.2MB 1243ms 133ms openjdk/zgc 21
java 1a.java 1659ms 11ms 54.9MB 1757ms 20ms openjdk 21
java 1a.java 1661ms 3.6ms 56.4MB 1767ms 20ms openjdk 23
java 1a.java 1673ms 2.5ms 108.3MB 1783ms 33ms graal/jvm 17.0.8
java 1.java 1702ms 9.3ms 309.5MB 1767ms 47ms openjdk 23
java 1.java 1705ms 5.0ms 202.5MB 1757ms 60ms openjdk 21
java 1a.java 1773ms 9.1ms 51.9MB 1763ms 127ms openjdk/zgc 21
java 1.java 2359ms 9.8ms 858.7MB 1787ms 673ms openjdk/zgc 21
java 2.java timeout 0.0ms 658.7MB 5300ms 130ms openjdk 21
java 2.java timeout 0.0ms 778.5MB 5293ms 133ms openjdk 23
java 2.java timeout 0.0ms 3309.3MB 3390ms 1953ms openjdk/zgc 21

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 18ms 0.5ms 1.9MB 10ms 0ms nim/clang 2.2.0
nim 1.nim 27ms 1.3ms 1.6MB 20ms 0ms nim 2.2.0
java 1b-m.java 183ms 13ms 52.5MB 287ms 23ms openjdk 23
java 1a-m.java 190ms 1.0ms 50.0MB 293ms 20ms openjdk 21
java 1-m.java 190ms 6.7ms 81.9MB 270ms 17ms openjdk 21
java 1b-m.java 190ms 20ms 49.8MB 300ms 17ms openjdk 21
java 1a-m.java 191ms 2.5ms 52.5MB 283ms 27ms openjdk 23
java 1-m.java 194ms 8.6ms 115.9MB 283ms 53ms graal/jvm 17.0.8
java 1-m.java 197ms 8.8ms 87.2MB 270ms 30ms openjdk 23
java 1a-m.java 214ms 15ms 104.8MB 317ms 47ms graal/jvm 17.0.8
java 1b-m.java 251ms 56ms 106.5MB 433ms 43ms graal/jvm 17.0.8
java 1b.java 304ms 3.3ms 49.7MB 293ms 140ms openjdk/zgc 21
java 1a.java 309ms 4.4ms 50.2MB 283ms 143ms openjdk/zgc 21
java 1.java 332ms 0.9ms 114.4MB 263ms 167ms openjdk/zgc 21
java 2-m.java 569ms 11ms 709.6MB 877ms 83ms openjdk 23
java 2-m.java 593ms 40ms 612.9MB 850ms 120ms openjdk 21
java 2.java 1593ms 14ms 1354.8MB 850ms 1043ms openjdk/zgc 21

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
nim 1.nim 559ms 9.0ms 34.9MB 540ms 7ms nim 2.2.0
nim 1.nim 622ms 12ms 34.7MB 607ms 3ms nim/clang 2.2.0
java 1.java 1072ms 7.5ms 966.2MB 473ms 723ms openjdk/zgc 21

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 117ms 1.1ms 9.6MB 103ms 0ms nim 2.2.0
nim 1.nim 131ms 5.5ms 9.9MB 113ms 0ms nim/clang 2.2.0
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

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 319ms 2.1ms 1.8MB 310ms 0ms nim 2.2.0
nim 2.nim 341ms 2.4ms 2.0MB 330ms 0ms nim/clang 2.2.0
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
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

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 35ms 1.0ms 1.8MB 27ms 0ms nim 2.2.0
nim 2.nim 36ms 0.6ms 2.0MB 30ms 0ms nim/clang 2.2.0
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
java 2.java 689ms 16ms 525.9MB 463ms 403ms openjdk/zgc 21

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 276ms 7.5ms 41.5MB 263ms 0ms nim 2.2.0
nim 1.nim 313ms 4.8ms 41.8MB 297ms 0ms nim/clang 2.2.0
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

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 1.2ms 11.5MB 40ms 0ms nim 2.2.0
nim 1.nim 61ms 1.1ms 11.7MB 50ms 0ms nim/clang 2.2.0
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

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1621ms 2.5ms 151.6MB 1577ms 23ms nim/clang 2.2.0
nim 1.nim 1646ms 1.9ms 152.0MB 1603ms 23ms nim 2.2.0
java 3.java timeout 0.0ms 411.6MB 5427ms 77ms graal/jvm 17.0.8
java 3.java timeout 0.0ms 302.6MB 5350ms 47ms openjdk 21
java 3.java timeout 0.0ms 304.6MB 5303ms 60ms openjdk 23
java 3.java timeout 0.0ms 468.8MB 4957ms 313ms openjdk/zgc 21

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 174ms 0.4ms 17.6MB 160ms 0ms nim/clang 2.2.0
nim 1.nim 175ms 2.7ms 16.5MB 160ms 0ms nim 2.2.0
java 3-m.java 771ms 11ms 181.0MB 1147ms 53ms graal/jvm 17.0.8
java 3-m.java 820ms 17ms 131.5MB 1230ms 23ms openjdk 21
java 3-m.java 828ms 41ms 132.5MB 1230ms 40ms openjdk 23
java 3.java 958ms 13ms 132.5MB 1157ms 173ms 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
nim 1.nim 3573ms 2.3ms 1.6MB 3560ms 0ms nim/clang 2.2.0
nim 1.nim 3597ms 4.0ms 1.4MB 3587ms 0ms nim 2.2.0

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
nim 1.nim 895ms 0.4ms 1.5MB 880ms 0ms nim/clang 2.2.0
nim 1.nim 898ms 1.4ms 1.3MB 887ms 0ms nim 2.2.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 226ms 0.5ms 1.5MB 213ms 0ms nim/clang 2.2.0
nim 1.nim 227ms 0.9ms 1.3MB 217ms 0ms nim 2.2.0
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