Rust VS C++ benchmarks

Current benchmark data was generated on Fri May 20 2022, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8370C CPU @ 2.80GHz (Model 106)

* -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.)

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 180ms 3.2ms 1.3MB 313ms 3ms rustc 1.63.0
rust 5-m.rs 206ms 1.1ms 1.3MB 370ms 0ms rustc 1.61.0
rust 1c.rs 234ms 0.2ms 0.7MB 227ms 0ms rustc 1.63.0
rust 1.rs 315ms 0.7ms 0.6MB 307ms 0ms rustc 1.61.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 28ms 2.3ms 0.7MB 20ms 0ms rustc 1.63.0
rust 5c-m.rs 29ms 2.8ms 1.3MB 33ms 0ms rustc 1.63.0
rust 5-m.rs 29ms 1.4ms 1.3MB 33ms 0ms rustc 1.61.0
rust 1.rs 35ms 1.1ms 2.1MB 23ms 0ms rustc 1.61.0

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 2.0ms 0.6ms 0.9MB 0ms 0ms g++ 12.1.0
rust 1.rs 2.1ms 1.0ms 0.6MB 0ms 0ms rustc 1.63.0
cpp 1.cpp 2.5ms 1.0ms 1.1MB 0ms 0ms clang++ 11.0.0
rust 1.rs 6.1ms 9.2ms 0.6MB 0ms 0ms rustc 1.61.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 415ms 1.0ms 5.0MB 403ms 0ms rustc 1.63.0
rust 8.rs 581ms 0.7ms 4.9MB 570ms 0ms rustc 1.61.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 21ms 0.6ms 2.1MB 10ms 0ms rustc 1.63.0
rust 8.rs 30ms 2.5ms 2.0MB 17ms 0ms rustc 1.61.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 225ms 0.3ms 0.9MB 213ms 0ms g++ 12.1.0
rust 4-i.rs 253ms 0.8ms 0.6MB 240ms 0ms rustc 1.61.0
cpp 0-i.cpp 258ms 0.6ms 1.1MB 247ms 0ms clang++ 11.0.0
rust 7-i.rs 305ms 0.2ms 0.6MB 290ms 0ms rustc 1.61.0
rust 3.rs 319ms 0.2ms 0.6MB 310ms 0ms rustc 1.63.0
cpp 1.cpp 339ms 0.4ms 0.9MB 330ms 0ms g++ 12.1.0
rust 2.rs 347ms 9.0ms 0.6MB 337ms 0ms rustc 1.61.0
cpp 1.cpp 386ms 2.5ms 1.1MB 373ms 0ms clang++ 11.0.0
rust 1.rs 390ms 11ms 0.6MB 377ms 0ms rustc 1.61.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 26ms 0.4ms 1.0MB 17ms 0ms g++ 12.1.0
cpp 0-i.cpp 29ms 0.6ms 1.1MB 20ms 0ms clang++ 11.0.0
rust 4-i.rs 29ms 1.4ms 0.6MB 20ms 0ms rustc 1.61.0
rust 7-i.rs 33ms 1.1ms 0.6MB 23ms 0ms rustc 1.61.0
rust 3.rs 35ms 1.8ms 0.6MB 30ms 0ms rustc 1.63.0
cpp 1.cpp 36ms 0.7ms 0.9MB 23ms 0ms g++ 12.1.0
cpp 1.cpp 41ms 0.2ms 1.1MB 30ms 0ms clang++ 11.0.0
rust 1.rs 42ms 1.4ms 0.6MB 30ms 0ms rustc 1.61.0
rust 2.rs 50ms 12ms 0.6MB 40ms 0ms rustc 1.61.0

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 1060ms 0.4ms 3.1MB 2070ms 0ms clang++ 11.0.0
cpp 7-m.cpp 1061ms 0.7ms 3.2MB 2073ms 0ms clang++ 11.0.0
rust 7-m.rs 1065ms 1.3ms 2.2MB 2063ms 0ms rustc 1.61.0
cpp 8-m.cpp 1066ms 2.3ms 1.0MB 2083ms 0ms g++ 12.1.0
rust 8-m.rs 1067ms 3.9ms 2.3MB 2060ms 3ms rustc 1.63.0
cpp 7-m.cpp 1067ms 1.7ms 0.9MB 2093ms 0ms g++ 12.1.0
rust 8.rs 2062ms 1.0ms 2.5MB 2050ms 0ms rustc 1.63.0
rust 7.rs 2063ms 0.4ms 2.1MB 2050ms 0ms rustc 1.61.0
rust 2-m.rs 2152ms 7.6ms 2.2MB 4170ms 3ms rustc 1.61.0
cpp 6-im.cpp 2241ms 10.0ms 1.0MB 4400ms 0ms g++ 12.1.0
cpp 6-im.cpp 2242ms 13ms 3.2MB 4400ms 3ms clang++ 11.0.0
rust 2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.61.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 275ms 1.2ms 0.7MB 510ms 0ms rustc 1.61.0
cpp 8-m.cpp 275ms 0.5ms 3.2MB 517ms 0ms clang++ 11.0.0
rust 8-m.rs 275ms 1.1ms 2.2MB 507ms 0ms rustc 1.63.0
cpp 8-m.cpp 277ms 1.3ms 1.0MB 523ms 0ms g++ 12.1.0
cpp 7-m.cpp 277ms 1.7ms 3.2MB 520ms 0ms clang++ 11.0.0
cpp 7-m.cpp 279ms 2.1ms 1.0MB 527ms 0ms g++ 12.1.0
rust 8.rs 518ms 0.3ms 2.2MB 510ms 0ms rustc 1.63.0
rust 7.rs 518ms 0.9ms 0.6MB 510ms 0ms rustc 1.61.0
rust 2-m.rs 543ms 1.0ms 2.1MB 1033ms 0ms rustc 1.61.0
cpp 6-im.cpp 569ms 0.4ms 3.1MB 1097ms 0ms clang++ 11.0.0
cpp 6-im.cpp 571ms 3.0ms 1.0MB 1100ms 0ms g++ 12.1.0
rust 2.rs 1704ms 0.1ms 0.6MB 1690ms 0ms rustc 1.61.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 76ms 0.9ms 2.2MB 127ms 0ms rustc 1.63.0
rust 7-m.rs 76ms 1.2ms 0.7MB 127ms 0ms rustc 1.61.0
cpp 8-m.cpp 76ms 0.5ms 3.3MB 130ms 0ms clang++ 11.0.0
cpp 7-m.cpp 77ms 1.9ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 8-m.cpp 78ms 3.3ms 1.0MB 133ms 0ms g++ 12.1.0
cpp 7-m.cpp 78ms 2.7ms 1.0MB 130ms 0ms g++ 12.1.0
rust 8.rs 132ms 1.4ms 2.1MB 120ms 0ms rustc 1.63.0
rust 7.rs 133ms 1.1ms 0.6MB 120ms 0ms rustc 1.61.0
rust 2-m.rs 144ms 0.6ms 0.7MB 257ms 0ms rustc 1.61.0
cpp 6-im.cpp 151ms 1.3ms 1.0MB 280ms 0ms g++ 12.1.0
cpp 6-im.cpp 151ms 1.5ms 3.1MB 273ms 0ms clang++ 11.0.0
rust 2.rs 429ms 1.3ms 0.6MB 417ms 0ms rustc 1.61.0

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 1792ms 160ms 33.7MB 1770ms 7ms rustc 1.61.0
rust 3.rs 1864ms 18ms 49.8MB 1833ms 17ms rustc 1.61.0
rust 5.rs 2061ms 144ms 33.9MB 2040ms 3ms rustc 1.61.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 155ms 13ms 5.8MB 140ms 0ms rustc 1.61.0
rust 5.rs 171ms 15ms 5.9MB 157ms 0ms rustc 1.61.0
rust 3.rs 182ms 1.8ms 7.8MB 170ms 0ms rustc 1.61.0

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 926ms 44ms 6.2MB 1777ms 27ms rustc 1.61.0
rust 5-m.rs 1068ms 96ms 5.5MB 2043ms 30ms rustc 1.61.0
rust 3.rs 1836ms 5.8ms 6.5MB 1803ms 13ms rustc 1.61.0
rust 1-m.rs 2854ms 48ms 5.6MB 5457ms 143ms rustc 1.61.0
rust 4.rs 3338ms 1.9ms 4.7MB 3330ms 0ms rustc 1.61.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 74ms 1.5ms 3.0MB 120ms 0ms rustc 1.61.0
rust 5-m.rs 94ms 26ms 3.2MB 153ms 3ms rustc 1.61.0
rust 3.rs 128ms 12ms 3.1MB 110ms 3ms rustc 1.61.0
rust 1-m.rs 203ms 7.2ms 2.8MB 353ms 20ms rustc 1.61.0
rust 4.rs 221ms 0.3ms 2.7MB 207ms 0ms rustc 1.61.0

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 147ms 0.3ms 3.7MB 140ms 0ms rustc 1.61.0
rust 2.rs 585ms 1.3ms 3.8MB 570ms 0ms rustc 1.61.0

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 41ms 0.9ms 3.0MB 30ms 0ms rustc 1.61.0
rust 2.rs 110ms 1.6ms 3.3MB 100ms 0ms rustc 1.61.0

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 726ms 2.1ms 0.7MB 1407ms 0ms rustc 1.61.0
cpp 1-im.cpp 757ms 0.8ms 1.0MB 1457ms 0ms g++ 12.1.0
cpp 1-im.cpp 774ms 8.3ms 3.6MB 1503ms 0ms clang++ 11.0.0
rust 2-im.rs 1043ms 7.2ms 0.6MB 2010ms 0ms rustc 1.61.0
rust 5-m.rs 1222ms 14ms 0.7MB 2350ms 0ms rustc 1.61.0
rust 3-i.rs 1429ms 4.8ms 0.6MB 1417ms 0ms rustc 1.61.0
rust 2-i.rs 1865ms 8.9ms 0.6MB 1857ms 0ms rustc 1.61.0
rust 1-m.rs 2009ms 8.0ms 0.7MB 3873ms 0ms rustc 1.61.0
rust 1.rs 3709ms 24ms 0.6MB 3697ms 0ms rustc 1.61.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-im.rs 67ms 0.7ms 0.7MB 110ms 0ms rustc 1.61.0
cpp 1-im.cpp 72ms 0.6ms 1.0MB 123ms 0ms g++ 12.1.0
cpp 1-im.cpp 73ms 0.8ms 3.6MB 123ms 0ms clang++ 11.0.0
rust 2-im.rs 94ms 1.9ms 0.7MB 160ms 0ms rustc 1.61.0
rust 5-m.rs 112ms 0.6ms 0.7MB 190ms 0ms rustc 1.61.0
rust 3-i.rs 121ms 1.5ms 0.6MB 110ms 0ms rustc 1.61.0
rust 2-i.rs 156ms 1.3ms 0.6MB 147ms 0ms rustc 1.61.0
rust 1-m.rs 178ms 3.1ms 0.7MB 317ms 0ms rustc 1.61.0
rust 1.rs 326ms 12ms 0.6MB 317ms 0ms rustc 1.61.0

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 149ms 13ms 21.0MB 90ms 87ms rustc 1.61.0
rust 2-m.rs 470ms 50ms 114.0MB 220ms 500ms rustc 1.61.0
rust 1-http2.rs 915ms 119ms 87.8MB 1123ms 477ms rustc 1.61.0
rust 2-http2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.61.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 80ms 16ms 17.2MB 17ms 23ms rustc 1.61.0
rust 2.rs 132ms 11ms 27.9MB 37ms 87ms rustc 1.61.0
rust 1-http2.rs 404ms 19ms 32.1MB 583ms 120ms rustc 1.61.0
rust 2-http2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.61.0

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 77ms 1.0ms 36.3MB 57ms 7ms rustc 1.61.0
rust 2.rs 77ms 1.7ms 38.1MB 53ms 7ms rustc 1.61.0
rust 1.rs 120ms 2.9ms 75.4MB 73ms 33ms rustc 1.61.0

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 496ms 0.9ms 258.4MB 383ms 97ms rustc 1.61.0
rust 3.rs 499ms 3.7ms 257.7MB 377ms 107ms rustc 1.61.0
rust 1.rs 828ms 1.8ms 605.3MB 583ms 227ms rustc 1.61.0

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 350ms 7.7ms 29.1MB 603ms 17ms rustc 1.61.0
rust 8.rs 615ms 8.3ms 23.2MB 593ms 10ms rustc 1.61.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 50ms 2.3ms 16.0MB 70ms 3ms rustc 1.61.0
rust 8.rs 76ms 0.9ms 11.6MB 57ms 3ms rustc 1.61.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 53ms 6.9ms 0.6MB 43ms 0ms rustc 1.61.0
rust 1.rs 80ms 1.6ms 2.1MB 70ms 0ms rustc 1.61.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 208ms 2.4ms 0.6MB 200ms 0ms rustc 1.61.0
rust 1.rs 301ms 19ms 2.0MB 290ms 0ms rustc 1.61.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 36ms 2.1ms 0.6MB 23ms 0ms rustc 1.61.0
rust 1.rs 46ms 1.2ms 0.7MB 40ms 0ms rustc 1.61.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 927ms 16ms 33.8MB 903ms 7ms rustc 1.61.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 192ms 2.1ms 9.8MB 180ms 0ms rustc 1.61.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 422ms 5.1ms 7.4MB 403ms 0ms clang++ 11.0.0
rust 2.rs 465ms 0.8ms 6.5MB 450ms 0ms rustc 1.61.0
cpp 1.cpp 648ms 1.2ms 7.7MB 637ms 0ms g++ 12.1.0
rust 1.rs 898ms 26ms 41.0MB 870ms 10ms rustc 1.61.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 94ms 0.2ms 3.7MB 83ms 0ms clang++ 11.0.0
rust 2.rs 108ms 1.9ms 3.1MB 100ms 0ms rustc 1.61.0
rust 1.rs 131ms 1.0ms 11.7MB 117ms 0ms rustc 1.61.0
cpp 1.cpp 154ms 0.6ms 4.0MB 147ms 0ms g++ 12.1.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 1829ms 0.8ms 2.8MB 1750ms 67ms rustc 1.61.0
rust 1.rs 1829ms 0.7ms 2.9MB 1670ms 143ms rustc 1.61.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 390ms 0.6ms 2.6MB 373ms 0ms rustc 1.61.0
rust 2.rs 409ms 0.9ms 2.6MB 397ms 0ms rustc 1.61.0

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 564ms 4.9ms 77.1MB 713ms 20ms rustc 1.61.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 66ms 3.2ms 11.9MB 73ms 0ms rustc 1.61.0

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 146ms 0.7ms 0.6MB 140ms 0ms rustc 1.61.0
rust 1.rs 1857ms 16ms 0.7MB 1843ms 0ms rustc 1.61.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 39ms 0.9ms 0.7MB 30ms 0ms rustc 1.61.0
rust 1.rs 467ms 1.7ms 0.7MB 457ms 0ms rustc 1.61.0