Programming Language and compiler
Benchmarks

Rust VS C++ 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.)

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 1.0ms 0.0ms 1.4MB 0ms 0ms g++ 11.4.0
rust 1.rs 1.2ms 0.0ms 1.9MB 0ms 0ms rustc 1.84.0
rust 1.rs 1.3ms 0.1ms 1.8MB 0ms 0ms rustc 1.86.0-nightly
cpp 1.cpp 1.5ms 0.1ms 2.3MB 0ms 0ms clang++ 14.0.0-1ubuntu1.1

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 248ms 0.6ms 4.9MB 237ms 0ms rustc 1.86.0-nightly
rust 8.rs 324ms 31ms 4.9MB 313ms 0ms rustc 1.84.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 13ms 0.4ms 2.0MB 0ms 0ms rustc 1.86.0-nightly
rust 8.rs 15ms 0.3ms 2.0MB 0ms 0ms rustc 1.84.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 166ms 0.1ms 1.5MB 160ms 0ms g++ 11.4.0
rust 4-i.rs 167ms 7.9ms 1.9MB 153ms 0ms rustc 1.84.0
cpp 0-i.cpp 170ms 0.6ms 2.3MB 160ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 7-i.rs 236ms 0.8ms 1.9MB 227ms 0ms rustc 1.84.0
rust 1.rs 239ms 0.8ms 1.8MB 230ms 0ms rustc 1.84.0
rust 2.rs 279ms 1.1ms 1.8MB 267ms 0ms rustc 1.84.0
rust 3.rs 280ms 0.3ms 1.9MB 267ms 0ms rustc 1.86.0-nightly
cpp 1.cpp 313ms 1.7ms 1.8MB 303ms 0ms g++ 11.4.0
cpp 1.cpp 313ms 1.0ms 2.3MB 300ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 19ms 0.1ms 1.5MB 10ms 0ms g++ 11.4.0
cpp 0-i.cpp 19ms 0.2ms 2.3MB 10ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 4-i.rs 21ms 3.7ms 1.8MB 10ms 0ms rustc 1.84.0
rust 7-i.rs 26ms 0.4ms 1.8MB 20ms 0ms rustc 1.84.0
rust 1.rs 26ms 0.5ms 1.9MB 17ms 0ms rustc 1.84.0
rust 2.rs 30ms 0.2ms 1.8MB 20ms 0ms rustc 1.84.0
rust 3.rs 30ms 0.2ms 1.8MB 20ms 0ms rustc 1.86.0-nightly
cpp 1.cpp 34ms 0.6ms 2.3MB 27ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1.cpp 34ms 0.8ms 1.8MB 23ms 0ms g++ 11.4.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 471ms 6.8ms 7.6MB 1820ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 488ms 8.2ms 4.2MB 1883ms 0ms g++ 11.4.0
rust 8-m.rs 498ms 0.6ms 4.6MB 1907ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 499ms 0.2ms 4.2MB 1927ms 0ms rustc 1.84.0
cpp 6-im.cpp 920ms 3.4ms 7.4MB 3587ms 7ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 925ms 1.0ms 4.2MB 3613ms 0ms g++ 11.4.0
rust 8.rs 1010ms 1.5ms 2.4MB 1000ms 0ms rustc 1.86.0-nightly
rust 2-m.rs 1942ms 1.3ms 6.2MB 7613ms 3ms rustc 1.84.0
rust 7.rs 2082ms 9.0ms 2.0MB 2070ms 0ms rustc 1.84.0
rust 2.rs 4212ms 29ms 2.0MB 4203ms 0ms rustc 1.84.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 128ms 0.3ms 4.2MB 463ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 128ms 0.3ms 6.1MB 470ms 0ms rustc 1.84.0
cpp 8-m.cpp 129ms 6.4ms 7.4MB 460ms 3ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 129ms 0.3ms 4.1MB 477ms 0ms g++ 11.4.0
cpp 6-im.cpp 244ms 4.5ms 4.2MB 917ms 0ms g++ 11.4.0
cpp 6-im.cpp 246ms 5.8ms 7.3MB 917ms 0ms clang++ 14.0.0-1ubuntu1.1
rust 8.rs 255ms 0.7ms 2.3MB 250ms 0ms rustc 1.86.0-nightly
rust 2-m.rs 491ms 0.2ms 4.1MB 1880ms 7ms rustc 1.84.0
rust 7.rs 525ms 4.8ms 1.9MB 517ms 0ms rustc 1.84.0
rust 2.rs 1050ms 2.4ms 2.0MB 1037ms 0ms rustc 1.84.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 36ms 0.4ms 4.1MB 107ms 0ms rustc 1.86.0-nightly
rust 7-m.rs 36ms 0.4ms 4.1MB 103ms 7ms rustc 1.84.0
cpp 8-m.cpp 40ms 1.9ms 7.4MB 110ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 8-m.cpp 40ms 0.7ms 4.0MB 127ms 0ms g++ 11.4.0
rust 8.rs 66ms 0.8ms 2.0MB 57ms 0ms rustc 1.86.0-nightly
cpp 6-im.cpp 67ms 0.7ms 7.1MB 227ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 6-im.cpp 68ms 0.6ms 4.0MB 240ms 0ms g++ 11.4.0
rust 2-m.rs 127ms 0.2ms 4.1MB 460ms 3ms rustc 1.84.0
rust 7.rs 134ms 2.4ms 1.9MB 127ms 0ms rustc 1.84.0
rust 2.rs 265ms 1.3ms 2.0MB 253ms 0ms rustc 1.84.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1246ms 3.8ms 33.8MB 1220ms 13ms rustc 1.84.0
rust 5.rs 1349ms 11ms 33.8MB 1327ms 7ms rustc 1.84.0
rust 3.rs 1475ms 58ms 49.8MB 1443ms 17ms rustc 1.84.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 122ms 1.4ms 5.8MB 110ms 0ms rustc 1.84.0
rust 5.rs 124ms 0.7ms 5.8MB 110ms 0ms rustc 1.84.0
rust 3.rs 139ms 4.3ms 7.8MB 123ms 3ms rustc 1.84.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 559ms 73ms 7.5MB 2073ms 83ms rustc 1.84.0
rust 3-m.rs 564ms 15ms 11.2MB 2110ms 70ms rustc 1.84.0
rust 1-m.rs 975ms 19ms 10.4MB 3477ms 337ms rustc 1.84.0
rust 3.rs 1152ms 6.3ms 9.3MB 1097ms 40ms rustc 1.84.0
rust 4.rs 1894ms 14ms 7.5MB 1883ms 0ms rustc 1.84.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 51ms 0.7ms 5.4MB 150ms 10ms rustc 1.84.0
rust 3-m.rs 54ms 2.8ms 6.0MB 153ms 17ms rustc 1.84.0
rust 3.rs 72ms 1.9ms 4.0MB 60ms 0ms rustc 1.84.0
rust 1-m.rs 81ms 8.9ms 5.8MB 230ms 60ms rustc 1.84.0
rust 4.rs 115ms 0.8ms 3.4MB 107ms 0ms rustc 1.84.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 118ms 0.7ms 3.6MB 110ms 0ms rustc 1.84.0
rust 2.rs 423ms 4.0ms 3.6MB 417ms 0ms rustc 1.84.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 33ms 1.4ms 2.9MB 23ms 0ms rustc 1.84.0
rust 2.rs 77ms 2.1ms 3.0MB 63ms 0ms rustc 1.84.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 406ms 13ms 7.9MB 1557ms 7ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 407ms 4.6ms 4.7MB 1547ms 0ms g++ 11.4.0
rust 3-im.rs 411ms 1.6ms 4.0MB 1577ms 0ms rustc 1.84.0
rust 5-m.rs 566ms 8.3ms 4.0MB 2153ms 0ms rustc 1.84.0
rust 2-im.rs 629ms 8.2ms 4.0MB 2403ms 3ms rustc 1.84.0
rust 1-m.rs 967ms 7.9ms 4.0MB 3727ms 0ms rustc 1.84.0
rust 3-i.rs 1495ms 5.0ms 1.9MB 1483ms 0ms rustc 1.84.0
rust 2-i.rs 1759ms 3.0ms 1.8MB 1750ms 0ms rustc 1.84.0
rust 1.rs 2665ms 2.5ms 1.8MB 2657ms 0ms rustc 1.84.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 38ms 0.2ms 6.0MB 120ms 0ms rustc 1.84.0
cpp 1-im.cpp 42ms 1.3ms 7.9MB 127ms 0ms clang++ 14.0.0-1ubuntu1.1
cpp 1-im.cpp 43ms 0.7ms 4.7MB 140ms 0ms g++ 11.4.0
rust 5-m.rs 56ms 3.5ms 4.0MB 170ms 0ms rustc 1.84.0
rust 2-im.rs 62ms 0.9ms 6.0MB 200ms 0ms rustc 1.84.0
rust 1-m.rs 86ms 1.8ms 6.0MB 300ms 0ms rustc 1.84.0
rust 3-i.rs 126ms 1.4ms 1.9MB 120ms 0ms rustc 1.84.0
rust 2-i.rs 149ms 0.9ms 1.8MB 140ms 0ms rustc 1.84.0
rust 1.rs 224ms 1.9ms 1.8MB 210ms 0ms rustc 1.84.0

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 88ms 0.2ms 6.5MB 233ms 3ms rustc 1.84.0
rust 5-m.rs 98ms 2.1ms 4.8MB 310ms 3ms rustc 1.84.0
rust 1c.rs 163ms 1.0ms 1.9MB 153ms 0ms rustc 1.84.0
rust 1.rs 204ms 1.5ms 1.9MB 190ms 0ms rustc 1.84.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 16ms 0.2ms 4.8MB 23ms 0ms rustc 1.84.0
rust 5-m.rs 17ms 0.4ms 6.5MB 20ms 7ms rustc 1.84.0
rust 1c.rs 19ms 0.5ms 1.9MB 10ms 0ms rustc 1.84.0
rust 1.rs 23ms 0.1ms 1.9MB 10ms 0ms rustc 1.84.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2-http2.rs 331ms 18ms 64.9MB 513ms 413ms rustc 1.84.0
rust 1.rs 346ms 28ms 43.3MB 143ms 310ms rustc 1.84.0
rust 2-m.rs 400ms 23ms 75.0MB 177ms 867ms rustc 1.84.0
rust 1-http2.rs 476ms 91ms 60.4MB 740ms 623ms rustc 1.84.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 70ms 8.0ms 16.8MB 7ms 80ms rustc 1.84.0
rust 2-m.rs 112ms 6.5ms 30.4MB 47ms 163ms rustc 1.84.0
rust 2-http2.rs 160ms 41ms 30.9MB 250ms 160ms rustc 1.84.0
rust 1-http2.rs 239ms 34ms 31.5MB 543ms 177ms rustc 1.84.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 29ms 0.7ms 9.8MB 13ms 0ms rustc 1.84.0
rust 4-i.rs 31ms 1.8ms 7.9MB 17ms 3ms rustc 1.84.0
rust 3.rs 60ms 0.2ms 32.0MB 37ms 7ms rustc 1.84.0
rust 2.rs 64ms 1.4ms 33.8MB 37ms 13ms rustc 1.84.0
rust 1.rs 100ms 1.1ms 67.4MB 53ms 30ms rustc 1.84.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-i.rs 216ms 3.0ms 52.8MB 183ms 10ms rustc 1.84.0
rust 4-i.rs 263ms 6.1ms 53.6MB 203ms 40ms rustc 1.84.0
rust 3.rs 400ms 0.9ms 238.3MB 287ms 97ms rustc 1.84.0
rust 2.rs 406ms 1.7ms 238.1MB 297ms 93ms rustc 1.84.0
rust 1.rs 680ms 5.5ms 551.7MB 437ms 230ms rustc 1.84.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 241ms 8.1ms 30.2MB 700ms 3ms rustc 1.84.0
rust 8.rs 482ms 4.7ms 23.8MB 463ms 3ms rustc 1.84.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 32ms 2.6ms 16.2MB 63ms 7ms rustc 1.84.0
rust 8.rs 70ms 5.7ms 11.4MB 57ms 0ms rustc 1.84.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 35ms 3.7ms 1.9MB 23ms 0ms rustc 1.84.0
rust 1.rs 53ms 2.6ms 2.0MB 40ms 0ms rustc 1.84.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 134ms 22ms 1.9MB 123ms 0ms rustc 1.84.0
rust 1.rs 178ms 9.4ms 2.0MB 167ms 0ms rustc 1.84.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 24ms 0.4ms 1.9MB 13ms 0ms rustc 1.84.0
rust 1.rs 30ms 1.8ms 1.9MB 20ms 0ms rustc 1.84.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 694ms 5.4ms 33.8MB 673ms 7ms rustc 1.84.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 151ms 3.7ms 9.8MB 137ms 0ms rustc 1.84.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 313ms 4.9ms 40.9MB 293ms 7ms rustc 1.84.0
rust 2.rs 319ms 1.7ms 6.6MB 307ms 0ms rustc 1.84.0
cpp 1.cpp 483ms 3.5ms 7.3MB 470ms 0ms g++ 11.4.0
cpp 1.cpp 526ms 1.4ms 7.7MB 513ms 0ms clang++ 14.0.0-1ubuntu1.1

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 59ms 1.3ms 11.6MB 50ms 0ms rustc 1.84.0
rust 2.rs 80ms 0.7ms 2.9MB 70ms 0ms rustc 1.84.0
cpp 1.cpp 121ms 3.9ms 3.6MB 107ms 0ms g++ 11.4.0
cpp 1.cpp 132ms 1.8ms 4.0MB 123ms 0ms clang++ 14.0.0-1ubuntu1.1

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1530ms 9.8ms 2.7MB 1270ms 237ms rustc 1.84.0
rust 2.rs 1713ms 10ms 2.8MB 1610ms 90ms rustc 1.84.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 323ms 2.8ms 2.4MB 287ms 17ms rustc 1.84.0
rust 2.rs 380ms 2.1ms 2.5MB 370ms 0ms rustc 1.84.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 445ms 5.0ms 80.4MB 477ms 10ms rustc 1.84.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 51ms 0.5ms 11.4MB 40ms 0ms rustc 1.84.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 118ms 3.3ms 1.8MB 110ms 0ms rustc 1.84.0
rust 1.rs 1408ms 7.3ms 1.9MB 1397ms 0ms rustc 1.84.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 31ms 0.2ms 1.8MB 20ms 0ms rustc 1.84.0
rust 1.rs 356ms 4.9ms 1.9MB 343ms 0ms rustc 1.84.0