Programming Language and compiler
Benchmarks

Nim VS Rust benchmarks

Current benchmark data was generated on Tue Mar 25 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 909ms 6.8ms 34.6MB 893ms 0ms nim 2.2.2
nim 2.nim 952ms 13ms 34.9MB 937ms 0ms nim/clang 2.2.2
rust 4.rs 1295ms 3.8ms 33.6MB 1273ms 10ms rustc 1.85.1
rust 5.rs 1401ms 21ms 33.8MB 1377ms 7ms rustc 1.85.1
rust 3.rs 1556ms 12ms 49.8MB 1523ms 20ms rustc 1.85.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 2.nim 89ms 2.7ms 5.5MB 80ms 0ms nim 2.2.2
nim 2.nim 93ms 1.8ms 5.8MB 80ms 0ms nim/clang 2.2.2
rust 4.rs 123ms 2.5ms 5.8MB 113ms 0ms rustc 1.85.1
rust 5.rs 127ms 3.9ms 5.8MB 117ms 0ms rustc 1.85.1
rust 3.rs 136ms 2.8ms 7.8MB 123ms 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 581ms 48ms 9.3MB 2187ms 73ms rustc 1.85.1
rust 5-m.rs 617ms 62ms 5.6MB 2333ms 63ms rustc 1.85.1
rust 1-m.rs 957ms 7.3ms 8.4MB 3493ms 230ms rustc 1.85.1
rust 3.rs 1163ms 33ms 9.3MB 1117ms 30ms rustc 1.85.1
rust 4.rs 1886ms 1.9ms 7.4MB 1870ms 0ms rustc 1.85.1
nim 1.nim timeout 0.0ms 553.5MB 2540ms 2000ms nim 2.2.2
nim 1.nim timeout 0.0ms 559.8MB 2507ms 2027ms 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 54ms 1.7ms 3.3MB 163ms 13ms rustc 1.85.1
rust 3-m.rs 59ms 1.8ms 4.1MB 187ms 10ms rustc 1.85.1
rust 3.rs 72ms 1.0ms 4.0MB 60ms 0ms rustc 1.85.1
rust 1-m.rs 73ms 0.5ms 3.9MB 233ms 23ms rustc 1.85.1
rust 4.rs 119ms 3.2ms 3.3MB 110ms 0ms rustc 1.85.1
nim 1.nim 4311ms 7.9ms 519.8MB 2117ms 1770ms nim/clang 2.2.2
nim 1.nim 4368ms 20ms 519.3MB 2157ms 1783ms 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 91ms 0.5ms 3.2MB 260ms 3ms rustc 1.85.1
rust 5-m.rs 95ms 0.4ms 3.2MB 297ms 0ms rustc 1.85.1
rust 1c.rs 162ms 1.0ms 1.9MB 153ms 0ms rustc 1.85.1
nim 2.nim 189ms 1.0ms 1.5MB 180ms 0ms nim 2.2.2
rust 1.rs 196ms 1.0ms 1.9MB 187ms 0ms rustc 1.85.1
nim 2.nim 235ms 1.2ms 1.8MB 227ms 0ms nim/clang 2.2.2
nim 1.nim 555ms 2.0ms 1.8MB 453ms 87ms nim/clang 2.2.2
nim 1.nim 580ms 1.8ms 1.5MB 467ms 103ms 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 3.2MB 27ms 0ms rustc 1.85.1
rust 5-m.rs 16ms 0.9ms 3.2MB 27ms 0ms rustc 1.85.1
rust 1c.rs 19ms 0.3ms 1.9MB 10ms 0ms rustc 1.85.1
nim 2.nim 21ms 1.0ms 1.5MB 10ms 0ms nim 2.2.2
rust 1.rs 22ms 0.7ms 2.0MB 10ms 0ms rustc 1.85.1
nim 2.nim 26ms 0.5ms 1.8MB 20ms 0ms nim/clang 2.2.2
nim 1.nim 59ms 1.4ms 1.8MB 40ms 3ms nim/clang 2.2.2
nim 1.nim 61ms 1.3ms 1.5MB 43ms 3ms 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 1.4MB 0ms 0ms nim 2.2.2
nim 1.nim 1.2ms 0.1ms 1.8MB 0ms 0ms nim/clang 2.2.2
rust 1.rs 1.2ms 0.1ms 1.8MB 0ms 0ms rustc 1.85.1
rust 1.rs 1.4ms 0.2ms 1.9MB 0ms 0ms rustc 1.87.0-nightly

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 42ms 4.5ms 1.8MB 37ms 0ms rustc 1.85.1
rust 1.rs 52ms 8.0ms 2.0MB 47ms 0ms rustc 1.85.1
nim 2.nim 112ms 1.0ms 1.6MB 100ms 0ms nim/clang 2.2.2
nim 2.nim 112ms 1.7ms 1.8MB 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 143ms 14ms 1.9MB 137ms 0ms rustc 1.85.1
rust 1.rs 193ms 34ms 2.0MB 183ms 0ms rustc 1.85.1
nim 2.nim 328ms 1.5ms 1.6MB 320ms 0ms nim/clang 2.2.2
nim 2.nim 331ms 2.1ms 1.4MB 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 0.9ms 1.8MB 20ms 0ms rustc 1.85.1
rust 1.rs 29ms 0.1ms 1.8MB 20ms 0ms rustc 1.85.1
nim 2.nim 50ms 1.8ms 1.5MB 40ms 0ms nim/clang 2.2.2
nim 2.nim 50ms 1.3ms 1.3MB 40ms 0ms nim 2.2.2
nim 1.nim 445ms 9.6ms 1.5MB 437ms 0ms nim/clang 2.2.2
nim 1.nim 480ms 3.4ms 1.3MB 473ms 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 256ms 16ms 4.7MB 250ms 0ms rustc 1.87.0-nightly
rust 8.rs 308ms 1.4ms 4.7MB 300ms 0ms rustc 1.85.1
nim 1.nim 388ms 0.7ms 4.7MB 380ms 0ms nim/clang 2.2.2
nim 1.nim 577ms 2.5ms 4.4MB 567ms 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 0.2ms 1.9MB 10ms 0ms rustc 1.87.0-nightly
rust 8.rs 18ms 5.2ms 1.9MB 13ms 0ms rustc 1.85.1
nim 1.nim 19ms 0.4ms 2.0MB 10ms 0ms nim/clang 2.2.2
nim 1.nim 27ms 1.4ms 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 545ms 5.4ms 34.6MB 527ms 0ms nim 2.2.2
nim 1.nim 618ms 12ms 34.9MB 597ms 3ms nim/clang 2.2.2
rust 1.rs 708ms 3.7ms 33.8MB 683ms 10ms rustc 1.85.1

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 116ms 0.7ms 9.6MB 100ms 0ms nim 2.2.2
nim 1.nim 134ms 1.4ms 9.9MB 120ms 0ms nim/clang 2.2.2
rust 1.rs 153ms 0.3ms 9.8MB 140ms 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 168ms 2.2ms 1.9MB 160ms 0ms rustc 1.85.1
rust 7-i.rs 238ms 0.9ms 1.9MB 230ms 0ms rustc 1.85.1
rust 1.rs 240ms 0.8ms 1.8MB 230ms 0ms rustc 1.85.1
rust 3.rs 280ms 0.4ms 1.8MB 270ms 0ms rustc 1.87.0-nightly
rust 2.rs 288ms 8.0ms 1.6MB 277ms 0ms rustc 1.85.1
nim 2.nim 320ms 3.2ms 1.8MB 310ms 0ms nim 2.2.2
nim 2.nim 347ms 6.4ms 2.0MB 337ms 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 19ms 0.3ms 1.8MB 10ms 0ms rustc 1.85.1
rust 7-i.rs 26ms 0.2ms 1.8MB 20ms 0ms rustc 1.85.1
rust 1.rs 26ms 0.3ms 1.9MB 20ms 0ms rustc 1.85.1
rust 3.rs 30ms 0.1ms 1.8MB 20ms 0ms rustc 1.87.0-nightly
rust 2.rs 30ms 0.7ms 1.8MB 20ms 0ms rustc 1.85.1
nim 2.nim 35ms 1.0ms 1.8MB 30ms 0ms nim 2.2.2
nim 2.nim 37ms 1.3ms 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
rust 2.rs 317ms 3.9ms 6.7MB 307ms 0ms rustc 1.85.1
nim 1.nim 320ms 5.6ms 41.8MB 307ms 0ms nim/clang 2.2.2
rust 1.rs 323ms 1.8ms 40.9MB 303ms 0ms rustc 1.85.1
nim 1.nim 330ms 8.4ms 41.5MB 317ms 0ms nim 2.2.2

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
nim 1.nim 56ms 4.0ms 11.5MB 47ms 0ms nim 2.2.2
nim 1.nim 59ms 4.5ms 11.8MB 50ms 0ms nim/clang 2.2.2
rust 1.rs 61ms 2.9ms 11.6MB 50ms 0ms rustc 1.85.1
rust 2.rs 79ms 2.3ms 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 448ms 14ms 77.6MB 470ms 13ms rustc 1.85.1
nim 1.nim 1640ms 16ms 164.0MB 1607ms 17ms nim/clang 2.2.2
nim 1.nim 1702ms 8.7ms 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 48ms 0.8ms 12.6MB 40ms 0ms rustc 1.85.1
nim 1.nim 174ms 1.8ms 20.9MB 160ms 0ms nim/clang 2.2.2
nim 1.nim 179ms 0.8ms 20.6MB 160ms 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 494ms 0.3ms 2.5MB 1913ms 0ms rustc 1.87.0-nightly
rust 7-m.rs 501ms 1.3ms 2.3MB 1937ms 7ms rustc 1.85.1
rust 8.rs 994ms 1.8ms 2.4MB 980ms 0ms rustc 1.87.0-nightly
rust 2-m.rs 1967ms 0.5ms 2.3MB 7720ms 7ms rustc 1.85.1
rust 7.rs 2112ms 8.4ms 2.0MB 2103ms 0ms rustc 1.85.1
nim 1.nim 3592ms 5.8ms 1.6MB 3583ms 0ms nim/clang 2.2.2
nim 1.nim 3603ms 11ms 1.4MB 3593ms 0ms nim 2.2.2
rust 2.rs 4212ms 3.9ms 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 0.3ms 2.3MB 467ms 3ms rustc 1.87.0-nightly
rust 7-m.rs 129ms 0.0ms 2.1MB 477ms 0ms rustc 1.85.1
rust 8.rs 251ms 0.9ms 2.1MB 240ms 0ms rustc 1.87.0-nightly
rust 2-m.rs 499ms 4.2ms 2.1MB 1907ms 0ms rustc 1.85.1
rust 7.rs 535ms 4.9ms 1.9MB 523ms 0ms rustc 1.85.1
nim 1.nim 901ms 1.0ms 1.8MB 890ms 0ms nim 2.2.2
nim 1.nim 902ms 2.9ms 1.5MB 890ms 0ms nim/clang 2.2.2
rust 2.rs 1057ms 5.0ms 2.0MB 1043ms 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 0.2ms 2.3MB 107ms 0ms rustc 1.87.0-nightly
rust 7-m.rs 37ms 0.8ms 2.1MB 113ms 0ms rustc 1.85.1
rust 8.rs 65ms 0.4ms 2.0MB 60ms 0ms rustc 1.87.0-nightly
rust 2-m.rs 128ms 0.5ms 2.0MB 470ms 0ms rustc 1.85.1
rust 7.rs 136ms 2.4ms 1.9MB 130ms 0ms rustc 1.85.1
nim 1.nim 227ms 0.4ms 1.5MB 220ms 0ms nim/clang 2.2.2
nim 1.nim 228ms 0.8ms 1.3MB 220ms 0ms nim 2.2.2
rust 2.rs 267ms 1.3ms 2.0MB 260ms 0ms rustc 1.85.1