C# VS Rust benchmarks

Current benchmark data was generated on Mon Oct 03 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.)

binarytrees

Input: 18

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
csharp 1.cs 1356ms 24ms 392.1MB 1253ms 170ms dotnet 6.0.401
rust 4.rs 1546ms 1.5ms 33.7MB 1523ms 7ms rustc 1.64.0
rust 5.rs 1738ms 4.2ms 33.8MB 1713ms 3ms rustc 1.64.0
rust 3.rs 1832ms 14ms 49.8MB 1807ms 13ms rustc 1.64.0
csharp 1.cs 2170ms 29ms 100.2MB 2493ms 153ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 141ms 1.9ms 5.7MB 130ms 0ms rustc 1.64.0
csharp 1.cs 153ms 1.8ms 44.8MB 127ms 7ms mono 6.12.0
rust 5.rs 158ms 1.3ms 5.6MB 150ms 0ms rustc 1.64.0
rust 3.rs 164ms 3.7ms 7.9MB 147ms 0ms rustc 1.64.0
csharp 1.cs 188ms 2.9ms 89.2MB 127ms 33ms dotnet 6.0.401

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 949ms 23ms 6.1MB 1817ms 30ms rustc 1.64.0
rust 5-m.rs 1215ms 288ms 5.3MB 2340ms 30ms rustc 1.64.0
rust 3.rs 1824ms 8.8ms 6.5MB 1783ms 27ms rustc 1.64.0
rust 1-m.rs 2566ms 12ms 5.2MB 4930ms 103ms rustc 1.64.0
rust 4.rs 3186ms 0.9ms 4.3MB 3170ms 0ms rustc 1.64.0
csharp 1-m.cs 4272ms 154ms 104.3MB 7873ms 80ms dotnet 6.0.401

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 74ms 2.9ms 2.9MB 123ms 3ms rustc 1.64.0
rust 5-m.rs 80ms 16ms 3.0MB 127ms 3ms rustc 1.64.0
rust 3.rs 118ms 0.5ms 3.2MB 103ms 0ms rustc 1.64.0
rust 1-m.rs 193ms 9.3ms 2.8MB 320ms 20ms rustc 1.64.0
rust 4.rs 210ms 0.2ms 2.5MB 200ms 0ms rustc 1.64.0
csharp 1-m.cs 408ms 26ms 82.3MB 623ms 43ms dotnet 6.0.401

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 147ms 0.7ms 3.6MB 140ms 0ms rustc 1.64.0
rust 2.rs 600ms 1.4ms 3.7MB 587ms 0ms rustc 1.64.0
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms dotnet 6.0.401

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 41ms 0.7ms 3.0MB 30ms 0ms rustc 1.64.0
rust 2.rs 113ms 0.1ms 3.3MB 107ms 0ms rustc 1.64.0
csharp 1.cs 1107ms 3.4ms 47.8MB 1070ms 7ms dotnet 6.0.401

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5c-m.rs 182ms 3.7ms 1.3MB 317ms 3ms rustc 1.66.0-nightly
rust 5-m.rs 202ms 2.7ms 1.2MB 360ms 3ms rustc 1.64.0
rust 1c.rs 227ms 0.9ms 0.6MB 217ms 0ms rustc 1.66.0-nightly
rust 1.rs 316ms 1.8ms 0.6MB 303ms 0ms rustc 1.64.0
csharp 5-m.cs 404ms 16ms 83.6MB 610ms 107ms dotnet 6.0.401
csharp 5-m.cs 504ms 35ms 85.0MB 833ms 113ms mono 6.12.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 27ms 0.4ms 0.7MB 17ms 0ms rustc 1.66.0-nightly
rust 5c-m.rs 28ms 2.7ms 1.2MB 37ms 0ms rustc 1.66.0-nightly
rust 5-m.rs 29ms 1.0ms 1.2MB 37ms 0ms rustc 1.64.0
rust 1.rs 35ms 0.5ms 0.6MB 23ms 0ms rustc 1.64.0
csharp 5.cs 85ms 4.3ms 36.8MB 103ms 20ms mono 6.12.0
csharp 5.cs 97ms 5.2ms 39.7MB 87ms 17ms dotnet 6.0.401

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1.9ms 0.8ms 0.6MB 0ms 0ms rustc 1.66.0-nightly
rust 1.rs 2.2ms 0.8ms 0.6MB 0ms 0ms rustc 1.64.0
csharp 1.cs 19ms 0.8ms 24.3MB 10ms 0ms mono 6.12.0
csharp 1.cs 50ms 7.0ms 27.1MB 18ms 6ms dotnet 6.0.401

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 133ms 16ms 23.0MB 87ms 77ms rustc 1.64.0
rust 2-http2.rs 350ms 37ms 47.0MB 467ms 113ms rustc 1.64.0
rust 2-m.rs 491ms 5.2ms 112.1MB 287ms 473ms rustc 1.64.0
csharp 2-http2.cs 642ms 12ms 122.7MB 720ms 90ms dotnet 6.0.401
csharp 2-http3.cs 787ms 27ms 271.8MB 843ms 243ms dotnet 7.0.100-rc.1.22431.12
csharp 2.cs 825ms 29ms 146.2MB 797ms 373ms dotnet 6.0.401
csharp 1-m.cs 878ms 52ms 165.1MB 893ms 437ms dotnet 6.0.401
rust 1-http2.rs 1056ms 219ms 82.7MB 1453ms 437ms rustc 1.64.0

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 64ms 7.7ms 13.4MB 20ms 17ms rustc 1.64.0
rust 2.rs 123ms 6.2ms 29.8MB 30ms 90ms rustc 1.64.0
rust 2-http2.rs 317ms 58ms 29.1MB 460ms 80ms rustc 1.64.0
rust 1-http2.rs 382ms 48ms 28.4MB 563ms 97ms rustc 1.64.0
csharp 2.cs 442ms 10ms 76.9MB 370ms 103ms dotnet 6.0.401
csharp 1.cs 474ms 5.4ms 83.9MB 467ms 100ms dotnet 6.0.401
csharp 2-http3.cs 499ms 7.8ms 188.8MB 413ms 123ms dotnet 7.0.100-rc.1.22431.12
csharp 2-http2.cs 510ms 12ms 78.4MB 520ms 40ms dotnet 6.0.401

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 75ms 0.7ms 36.4MB 53ms 7ms rustc 1.64.0
rust 2.rs 76ms 0.9ms 38.0MB 47ms 13ms rustc 1.64.0
rust 1.rs 122ms 1.8ms 75.3MB 80ms 27ms rustc 1.64.0
csharp 2.cs 388ms 18ms 66.2MB 330ms 20ms dotnet 6.0.401
csharp 1.cs 521ms 5.9ms 144.1MB 487ms 60ms dotnet 6.0.401

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 505ms 1.0ms 258.5MB 400ms 90ms rustc 1.64.0
rust 2.rs 513ms 0.6ms 257.5MB 407ms 93ms rustc 1.64.0
rust 1.rs 856ms 1.4ms 605.7MB 603ms 237ms rustc 1.64.0
csharp 2.cs 2037ms 11ms 265.9MB 2110ms 100ms dotnet 6.0.401
csharp 1.cs 3342ms 247ms 759.2MB 3303ms 340ms dotnet 6.0.401

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 343ms 10ms 28.9MB 593ms 10ms rustc 1.64.0
rust 8.rs 621ms 29ms 23.1MB 593ms 13ms rustc 1.64.0
csharp 6-m.cs 1144ms 5.2ms 70.7MB 1687ms 30ms dotnet 6.0.401
csharp 6-m.cs 1568ms 60ms 69.8MB 2570ms 17ms mono 6.12.0

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 48ms 1.5ms 16.4MB 60ms 3ms rustc 1.64.0
rust 8.rs 75ms 1.4ms 11.7MB 53ms 7ms rustc 1.64.0
csharp 6.cs 229ms 1.0ms 51.2MB 303ms 13ms mono 6.12.0
csharp 6.cs 229ms 4.3ms 62.1MB 257ms 17ms dotnet 6.0.401

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 63ms 2.4ms 0.6MB 53ms 0ms rustc 1.64.0
rust 1.rs 87ms 4.7ms 2.1MB 77ms 0ms rustc 1.64.0
csharp 2.cs 186ms 2.6ms 25.5MB 167ms 0ms mono 6.12.0
csharp 2.cs 206ms 5.1ms 28.1MB 170ms 0ms dotnet 6.0.401
csharp 1.cs 1695ms 39ms 88.7MB 1610ms 33ms dotnet 6.0.401
csharp 1.cs 3023ms 16ms 49.6MB 2993ms 20ms mono 6.12.0

Input: 1000 3000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 205ms 4.3ms 0.6MB 190ms 0ms rustc 1.64.0
rust 1.rs 290ms 20ms 2.1MB 280ms 0ms rustc 1.64.0
csharp 2.cs 462ms 9.8ms 28.4MB 440ms 0ms dotnet 6.0.401
csharp 2.cs 506ms 4.4ms 27.5MB 493ms 0ms mono 6.12.0
csharp 1.cs 4631ms 6.8ms 91.1MB 4590ms 27ms dotnet 6.0.401
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms mono 6.12.0

Input: 100 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 35ms 0.9ms 0.6MB 27ms 0ms rustc 1.64.0
rust 1.rs 44ms 0.1ms 0.6MB 40ms 0ms rustc 1.64.0
csharp 2.cs 106ms 1.7ms 26.0MB 90ms 3ms mono 6.12.0
csharp 2.cs 134ms 1.6ms 30.0MB 97ms 3ms dotnet 6.0.401
csharp 1.cs 3184ms 4.2ms 77.1MB 3137ms 30ms dotnet 6.0.401
csharp 1.cs 3186ms 0.7ms 30.6MB 3167ms 3ms mono 6.12.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 414ms 0.8ms 4.8MB 400ms 0ms rustc 1.66.0-nightly
rust 8.rs 580ms 0.1ms 4.9MB 567ms 0ms rustc 1.64.0
csharp 2.cs 755ms 19ms 94.3MB 680ms 30ms dotnet 6.0.401
csharp 1.cs 3770ms 131ms 34.4MB 3740ms 0ms dotnet 6.0.401
csharp 3.cs 4339ms 9.3ms 36.3MB 4300ms 3ms dotnet 6.0.401
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms mono 6.12.0

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 21ms 1.3ms 0.6MB 10ms 0ms rustc 1.66.0-nightly
rust 8.rs 31ms 5.0ms 0.6MB 23ms 0ms rustc 1.64.0
csharp 2.cs 108ms 1.1ms 36.8MB 60ms 7ms dotnet 6.0.401
csharp 3.cs 251ms 0.8ms 33.2MB 217ms 3ms dotnet 6.0.401
csharp 1.cs 289ms 8.3ms 33.4MB 267ms 3ms dotnet 6.0.401
csharp 1.cs 832ms 3.6ms 25.0MB 820ms 0ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 892ms 8.0ms 33.9MB 867ms 13ms rustc 1.64.0
csharp 2.cs 914ms 7.1ms 378.8MB 773ms 170ms dotnet 6.0.401
csharp 1.cs 919ms 7.8ms 392.6MB 787ms 170ms dotnet 6.0.401
csharp 1.cs 1663ms 12ms 141.4MB 2043ms 107ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 185ms 2.7ms 9.9MB 170ms 0ms rustc 1.64.0
csharp 2.cs 259ms 4.0ms 92.3MB 203ms 30ms dotnet 6.0.401
csharp 1.cs 293ms 7.5ms 185.8MB 200ms 70ms dotnet 6.0.401
csharp 1.cs 306ms 3.4ms 72.6MB 290ms 23ms mono 6.12.0

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 252ms 0.2ms 0.6MB 240ms 0ms rustc 1.64.0
rust 7-i.rs 305ms 0.5ms 0.6MB 290ms 0ms rustc 1.64.0
rust 3.rs 338ms 0.2ms 0.6MB 330ms 0ms rustc 1.66.0-nightly
rust 2.rs 341ms 5.7ms 0.6MB 330ms 0ms rustc 1.64.0
rust 1.rs 384ms 0.6ms 0.6MB 370ms 0ms rustc 1.64.0
csharp 9.cs 403ms 4.5ms 29.4MB 370ms 0ms dotnet 6.0.401
csharp 8.cs 535ms 3.0ms 29.4MB 503ms 0ms dotnet 6.0.401
csharp 8.cs 1111ms 5.5ms 26.4MB 1093ms 0ms mono 6.12.0

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4-i.rs 28ms 0.8ms 0.6MB 20ms 0ms rustc 1.64.0
rust 7-i.rs 33ms 0.5ms 0.6MB 23ms 0ms rustc 1.64.0
rust 3.rs 36ms 0.5ms 0.7MB 30ms 0ms rustc 1.66.0-nightly
rust 2.rs 38ms 2.1ms 0.6MB 30ms 0ms rustc 1.64.0
rust 1.rs 41ms 0.6ms 0.6MB 30ms 0ms rustc 1.64.0
csharp 9.cs 87ms 3.3ms 27.5MB 60ms 0ms dotnet 6.0.401
csharp 8.cs 103ms 6.9ms 29.3MB 73ms 3ms dotnet 6.0.401
csharp 8.cs 132ms 0.5ms 23.0MB 120ms 0ms mono 6.12.0

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 462ms 1.4ms 6.7MB 450ms 0ms rustc 1.64.0
csharp 1.cs 734ms 4.5ms 88.1MB 690ms 17ms dotnet 6.0.401
rust 1.rs 736ms 47ms 40.9MB 713ms 7ms rustc 1.64.0
csharp 1.cs 793ms 34ms 82.8MB 763ms 17ms mono 6.12.0
csharp 2.cs 996ms 4.1ms 36.2MB 957ms 10ms dotnet 6.0.401
csharp 2.cs 2434ms 0.4ms 32.4MB 2417ms 3ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 107ms 1.4ms 3.1MB 97ms 0ms rustc 1.64.0
rust 1.rs 131ms 1.2ms 11.5MB 120ms 0ms rustc 1.64.0
csharp 1.cs 181ms 1.9ms 46.0MB 147ms 10ms dotnet 6.0.401
csharp 1.cs 185ms 2.0ms 40.6MB 167ms 3ms mono 6.12.0
csharp 2.cs 278ms 1.1ms 29.8MB 250ms 3ms dotnet 6.0.401
csharp 2.cs 604ms 0.6ms 27.7MB 583ms 7ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1934ms 3.2ms 2.8MB 1750ms 167ms rustc 1.64.0
rust 2.rs 1947ms 0.7ms 2.9MB 1877ms 53ms rustc 1.64.0
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms dotnet 6.0.401

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 393ms 1.0ms 2.6MB 377ms 0ms rustc 1.64.0
rust 2.rs 435ms 0.5ms 2.6MB 423ms 0ms rustc 1.64.0
csharp 1.cs 1271ms 5.4ms 96.5MB 1257ms 37ms dotnet 6.0.401

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 565ms 12ms 77.5MB 720ms 13ms rustc 1.64.0
csharp 5.cs 3119ms 121ms 618.6MB 2993ms 207ms dotnet 7.0.100-rc.1.22431.12
csharp 5.cs 4149ms 49ms 527.8MB 4090ms 197ms dotnet 6.0.401

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 63ms 1.1ms 11.9MB 73ms 0ms rustc 1.64.0
csharp 5.cs 456ms 3.6ms 179.6MB 390ms 57ms dotnet 7.0.100-rc.1.22431.12
csharp 5.cs 542ms 4.3ms 90.5MB 493ms 27ms dotnet 6.0.401

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 152ms 5.5ms 0.7MB 147ms 0ms rustc 1.64.0
rust 1.rs 2062ms 0.5ms 0.7MB 2050ms 0ms rustc 1.64.0
csharp 1.cs 4397ms 116ms 91.0MB 4377ms 27ms dotnet 6.0.401

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 40ms 1.5ms 0.7MB 30ms 0ms rustc 1.64.0
rust 1.rs 507ms 20ms 0.6MB 497ms 0ms rustc 1.64.0
csharp 1.cs 1170ms 9.4ms 90.6MB 1147ms 27ms dotnet 6.0.401

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 1059ms 1.5ms 2.3MB 2053ms 0ms rustc 1.64.0
rust 8-m.rs 1069ms 15ms 2.5MB 2047ms 7ms rustc 1.66.0-nightly
rust 7.rs 2060ms 0.1ms 2.1MB 2050ms 0ms rustc 1.64.0
rust 8.rs 2060ms 0.2ms 2.5MB 2050ms 0ms rustc 1.66.0-nightly
rust 2-m.rs 2134ms 15ms 2.2MB 4147ms 0ms rustc 1.64.0
csharp 3-m.cs 3138ms 699ms 32.7MB 5223ms 17ms dotnet 6.0.401
csharp 3.cs timeout 0.0ms 0.0MB 0ms 0ms mono 6.12.0
rust 2.rs timeout 0.0ms 0.0MB 0ms 0ms rustc 1.64.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7-m.rs 273ms 0.8ms 0.7MB 507ms 0ms rustc 1.64.0
rust 8-m.rs 277ms 5.0ms 2.4MB 513ms 0ms rustc 1.66.0-nightly
rust 8.rs 517ms 0.3ms 2.2MB 507ms 0ms rustc 1.66.0-nightly
rust 7.rs 518ms 0.3ms 0.6MB 510ms 0ms rustc 1.64.0
rust 2-m.rs 540ms 1.6ms 2.2MB 1030ms 0ms rustc 1.64.0
csharp 3-m.cs 721ms 1.6ms 30.6MB 1313ms 10ms dotnet 6.0.401
rust 2.rs 1707ms 4.3ms 0.6MB 1697ms 0ms rustc 1.64.0
csharp 3-m.cs 3184ms 138ms 29.2MB 6040ms 3ms mono 6.12.0

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 76ms 1.1ms 2.3MB 127ms 0ms rustc 1.66.0-nightly
rust 7-m.rs 77ms 2.6ms 0.7MB 130ms 0ms rustc 1.64.0
rust 7.rs 132ms 0.9ms 0.6MB 120ms 0ms rustc 1.64.0
rust 8.rs 134ms 2.9ms 2.2MB 120ms 0ms rustc 1.66.0-nightly
rust 2-m.rs 143ms 0.5ms 0.7MB 250ms 3ms rustc 1.64.0
csharp 3-m.cs 232ms 2.2ms 30.0MB 357ms 7ms dotnet 6.0.401
rust 2.rs 431ms 1.5ms 0.6MB 420ms 0ms rustc 1.64.0
csharp 3-m.cs 800ms 2.0ms 27.8MB 1523ms 0ms mono 6.12.0