Programming Language and compiler
Benchmarks

Nim VS Rust benchmarks

Current benchmark data was generated on Mon Mar 31 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
nim 2.nim 951ms 22ms 34.6MB 933ms 0ms nim 2.2.2
nim 2.nim 1044ms 46ms 34.9MB 1030ms 0ms nim/clang 2.2.2
rust 4.rs 1282ms 16ms 33.6MB 1257ms 13ms rustc 1.85.1
rust 5.rs 1382ms 66ms 33.8MB 1363ms 10ms rustc 1.85.1
rust 3.rs 1548ms 45ms 49.8MB 1517ms 13ms rustc 1.85.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 91ms 1.0ms 5.5MB 80ms 0ms nim 2.2.2
nim 2.nim 92ms 1.1ms 5.8MB 80ms 0ms nim/clang 2.2.2
rust 4.rs 121ms 2.0ms 5.6MB 110ms 0ms rustc 1.85.1
rust 5.rs 128ms 1.8ms 5.8MB 120ms 0ms rustc 1.85.1
rust 3.rs 143ms 4.2ms 7.8MB 130ms 0ms rustc 1.85.1

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 540ms 39ms 9.3MB 2037ms 63ms rustc 1.85.1
rust 5-m.rs 704ms 18ms 5.5MB 2673ms 70ms rustc 1.85.1
rust 1-m.rs 954ms 6.4ms 8.5MB 3497ms 220ms rustc 1.85.1
rust 3.rs 1161ms 18ms 9.3MB 1117ms 30ms rustc 1.85.1
rust 4.rs 1886ms 20ms 7.4MB 1873ms 0ms rustc 1.85.1
nim 1.nim timeout 0.0ms 553.5MB 2527ms 2017ms nim 2.2.2
nim 1.nim timeout 0.0ms 555.8MB 2507ms 2037ms nim/clang 2.2.2

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 55ms 1.7ms 3.4MB 167ms 10ms rustc 1.85.1
rust 3-m.rs 57ms 1.8ms 4.1MB 177ms 10ms rustc 1.85.1
rust 1-m.rs 73ms 0.4ms 3.8MB 233ms 27ms rustc 1.85.1
rust 3.rs 74ms 1.3ms 4.0MB 60ms 0ms rustc 1.85.1
rust 4.rs 119ms 3.2ms 3.3MB 110ms 0ms rustc 1.85.1
nim 1.nim 4347ms 12ms 519.8MB 2150ms 1773ms nim/clang 2.2.2
nim 1.nim 4379ms 10ms 519.4MB 2190ms 1760ms nim 2.2.2

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 89ms 0.4ms 3.4MB 263ms 0ms rustc 1.85.1
rust 5-m.rs 94ms 0.1ms 3.4MB 293ms 0ms rustc 1.85.1
rust 6.rs 144ms 0.4ms 1.9MB 140ms 0ms rustc 1.85.1
rust 1c.rs 163ms 0.5ms 1.9MB 150ms 0ms rustc 1.85.1
nim 2.nim 189ms 2.4ms 1.5MB 177ms 0ms nim 2.2.2
rust 1.rs 195ms 1.3ms 1.9MB 180ms 0ms rustc 1.85.1
nim 2.nim 237ms 2.8ms 1.8MB 227ms 0ms nim/clang 2.2.2
nim 1.nim 553ms 0.6ms 1.8MB 447ms 90ms nim/clang 2.2.2
nim 1.nim 579ms 2.1ms 1.5MB 477ms 87ms nim 2.2.2

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 16ms 0.5ms 3.4MB 20ms 0ms rustc 1.85.1
rust 5-m.rs 17ms 0.1ms 3.2MB 30ms 0ms rustc 1.85.1
rust 6.rs 17ms 0.8ms 1.9MB 10ms 0ms rustc 1.85.1
rust 1c.rs 18ms 0.1ms 1.9MB 10ms 0ms rustc 1.85.1
nim 2.nim 21ms 0.0ms 1.5MB 10ms 0ms nim 2.2.2
rust 1.rs 22ms 0.2ms 2.0MB 10ms 0ms rustc 1.85.1
nim 2.nim 26ms 0.2ms 1.8MB 20ms 0ms nim/clang 2.2.2
nim 1.nim 59ms 1.2ms 1.8MB 40ms 10ms nim/clang 2.2.2
nim 1.nim 61ms 0.5ms 1.5MB 40ms 7ms nim 2.2.2

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 1.1ms 0.0ms 1.5MB 0ms 0ms nim 2.2.2
nim 1.nim 1.2ms 0.0ms 1.9MB 0ms 0ms nim/clang 2.2.2
rust 1.rs 1.3ms 0.1ms 1.8MB 0ms 0ms rustc 1.88.0-nightly
rust 1.rs 1.3ms 0.0ms 1.9MB 0ms 0ms rustc 1.85.1

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 35ms 3.5ms 1.9MB 27ms 0ms rustc 1.85.1
rust 1.rs 45ms 3.2ms 2.0MB 33ms 0ms rustc 1.85.1
nim 2.nim 111ms 1.6ms 1.6MB 100ms 0ms nim/clang 2.2.2
nim 2.nim 113ms 2.6ms 1.4MB 103ms 0ms nim 2.2.2
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.2
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.2

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 135ms 20ms 1.9MB 130ms 0ms rustc 1.85.1
rust 1.rs 181ms 13ms 2.0MB 173ms 0ms rustc 1.85.1
nim 2.nim 324ms 1.9ms 1.6MB 313ms 0ms nim/clang 2.2.2
nim 2.nim 326ms 1.9ms 1.6MB 320ms 0ms nim 2.2.2
nim 1.nim timeout 0.0ms 1.3MB 4990ms 0ms nim 2.2.2
nim 1.nim timeout 0.0ms 1.5MB 4990ms 0ms nim/clang 2.2.2

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 26ms 2.8ms 1.9MB 20ms 0ms rustc 1.85.1
rust 1.rs 30ms 0.8ms 1.9MB 20ms 0ms rustc 1.85.1
nim 2.nim 50ms 1.1ms 1.3MB 40ms 0ms nim 2.2.2
nim 2.nim 50ms 0.7ms 1.6MB 40ms 0ms nim/clang 2.2.2
nim 1.nim 440ms 2.2ms 1.5MB 430ms 0ms nim/clang 2.2.2
nim 1.nim 481ms 0.8ms 1.3MB 470ms 0ms nim 2.2.2

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 246ms 0.3ms 4.8MB 237ms 0ms rustc 1.88.0-nightly
rust 8.rs 310ms 0.8ms 4.7MB 300ms 0ms rustc 1.85.1
nim 1.nim 388ms 0.9ms 4.7MB 380ms 0ms nim/clang 2.2.2
nim 1.nim 579ms 3.4ms 4.4MB 570ms 0ms nim 2.2.2

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 13ms 0.7ms 1.9MB 10ms 0ms rustc 1.88.0-nightly
rust 8.rs 15ms 0.1ms 2.0MB 10ms 0ms rustc 1.85.1
nim 1.nim 19ms 0.3ms 1.9MB 10ms 0ms nim/clang 2.2.2
nim 1.nim 26ms 0.4ms 1.6MB 20ms 0ms nim 2.2.2

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 534ms 2.9ms 34.6MB 517ms 0ms nim 2.2.2
nim 1.nim 631ms 20ms 34.9MB 613ms 3ms nim/clang 2.2.2
rust 1.rs 722ms 31ms 33.8MB 697ms 10ms rustc 1.85.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 114ms 2.7ms 9.6MB 100ms 0ms nim 2.2.2
nim 1.nim 135ms 3.0ms 9.9MB 123ms 0ms nim/clang 2.2.2
rust 1.rs 156ms 2.0ms 9.8MB 143ms 0ms rustc 1.85.1

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 166ms 3.3ms 1.9MB 160ms 0ms rustc 1.85.1
rust 7-i.rs 239ms 0.9ms 1.9MB 230ms 0ms rustc 1.85.1
rust 1.rs 239ms 1.0ms 1.8MB 230ms 0ms rustc 1.85.1
rust 3.rs 279ms 1.1ms 1.9MB 270ms 0ms rustc 1.88.0-nightly
rust 2.rs 288ms 7.7ms 1.6MB 277ms 0ms rustc 1.85.1
nim 2.nim 319ms 1.2ms 1.8MB 310ms 0ms nim 2.2.2
nim 2.nim 342ms 0.5ms 2.0MB 330ms 0ms nim/clang 2.2.2

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 18ms 0.0ms 1.8MB 10ms 0ms rustc 1.85.1
rust 7-i.rs 26ms 0.5ms 1.8MB 20ms 0ms rustc 1.85.1
rust 1.rs 27ms 0.5ms 1.9MB 20ms 0ms rustc 1.85.1
rust 3.rs 30ms 0.2ms 1.8MB 20ms 0ms rustc 1.88.0-nightly
rust 2.rs 32ms 2.7ms 1.6MB 23ms 0ms rustc 1.85.1
nim 2.nim 34ms 0.6ms 1.8MB 27ms 0ms nim 2.2.2
nim 2.nim 37ms 1.4ms 2.0MB 30ms 0ms nim/clang 2.2.2

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 271ms 8.1ms 41.5MB 257ms 0ms nim 2.2.2
nim 1.nim 298ms 2.6ms 41.8MB 287ms 0ms nim/clang 2.2.2
rust 1.rs 302ms 4.2ms 40.9MB 287ms 0ms rustc 1.85.1
rust 2.rs 314ms 1.2ms 6.6MB 300ms 0ms rustc 1.85.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 51ms 0.5ms 11.5MB 40ms 0ms nim 2.2.2
nim 1.nim 57ms 0.8ms 11.8MB 50ms 0ms nim/clang 2.2.2
rust 1.rs 59ms 3.1ms 11.6MB 50ms 0ms rustc 1.85.1
rust 2.rs 79ms 0.9ms 2.9MB 70ms 0ms rustc 1.85.1

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 437ms 2.6ms 77.5MB 447ms 13ms rustc 1.85.1
nim 1.nim 1633ms 8.8ms 164.1MB 1603ms 13ms nim/clang 2.2.2
nim 1.nim 1703ms 20ms 163.9MB 1670ms 20ms nim 2.2.2

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 49ms 0.4ms 12.6MB 43ms 0ms rustc 1.85.1
nim 1.nim 173ms 2.3ms 20.9MB 160ms 0ms nim/clang 2.2.2
nim 1.nim 178ms 2.0ms 20.6MB 163ms 0ms nim 2.2.2

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 495ms 3.5ms 2.5MB 1890ms 7ms rustc 1.88.0-nightly
rust 7-m.rs 502ms 0.8ms 2.1MB 1930ms 3ms rustc 1.85.1
rust 8.rs 992ms 0.2ms 2.4MB 980ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 1956ms 1.0ms 2.3MB 7687ms 7ms rustc 1.85.1
rust 7.rs 2115ms 12ms 1.9MB 2107ms 0ms rustc 1.85.1
nim 1.nim 3590ms 1.4ms 1.6MB 3580ms 0ms nim/clang 2.2.2
nim 1.nim 3596ms 7.0ms 1.9MB 3583ms 0ms nim 2.2.2
rust 2.rs 4212ms 7.3ms 2.0MB 4203ms 0ms rustc 1.85.1

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 128ms 0.2ms 2.3MB 470ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 130ms 0.3ms 2.1MB 477ms 3ms rustc 1.85.1
rust 8.rs 250ms 0.1ms 2.1MB 240ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 494ms 0.3ms 2.1MB 1910ms 0ms rustc 1.85.1
rust 7.rs 532ms 3.6ms 1.9MB 520ms 0ms rustc 1.85.1
nim 1.nim 899ms 0.8ms 1.5MB 890ms 0ms nim/clang 2.2.2
nim 1.nim 901ms 1.6ms 1.3MB 890ms 0ms nim 2.2.2
rust 2.rs 1057ms 2.8ms 2.0MB 1047ms 0ms rustc 1.85.1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 36ms 0.4ms 2.3MB 107ms 0ms rustc 1.88.0-nightly
rust 7-m.rs 36ms 0.1ms 2.0MB 113ms 0ms rustc 1.85.1
rust 8.rs 65ms 0.2ms 2.0MB 60ms 0ms rustc 1.88.0-nightly
rust 2-m.rs 128ms 0.3ms 2.1MB 470ms 3ms rustc 1.85.1
rust 7.rs 136ms 1.7ms 1.9MB 130ms 0ms rustc 1.85.1
nim 1.nim 227ms 0.3ms 1.5MB 220ms 0ms nim/clang 2.2.2
nim 1.nim 229ms 1.2ms 1.3MB 220ms 0ms nim 2.2.2
rust 2.rs 266ms 1.4ms 2.0MB 260ms 0ms rustc 1.85.1