Programming Language and compiler
Benchmarks

C# VS Rust benchmarks

Current benchmark data was generated on Wed May 25 2022, full log can be found HERE

CONTRIBUTIONS are WELCOME!

[x86_64][2 cores] Intel(R) Xeon(R) Platinum 8272CL CPU @ 2.60GHz (Model 85)

* -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 1595ms 35ms 305.1MB 1500ms 147ms dotnet 6.0.300
rust 4.rs 1628ms 114ms 33.8MB 1600ms 10ms rustc 1.61.0
rust 5.rs 1902ms 27ms 33.9MB 1867ms 17ms rustc 1.61.0
rust 3.rs 1939ms 119ms 49.8MB 1910ms 13ms rustc 1.61.0
csharp 1.cs 2472ms 34ms 107.8MB 2887ms 257ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 4.rs 138ms 1.4ms 5.7MB 120ms 0ms rustc 1.61.0
csharp 1.cs 164ms 1.0ms 44.7MB 137ms 13ms mono 6.12.0
rust 3.rs 166ms 0.5ms 7.7MB 153ms 0ms rustc 1.61.0
rust 5.rs 168ms 1.0ms 5.7MB 160ms 0ms rustc 1.61.0
csharp 1.cs 193ms 1.5ms 77.6MB 143ms 23ms dotnet 6.0.300

coro-prime-sieve

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 915ms 27ms 6.3MB 1760ms 17ms rustc 1.61.0
rust 5-m.rs 1033ms 130ms 5.7MB 1983ms 30ms rustc 1.61.0
rust 3.rs 1831ms 4.5ms 6.5MB 1777ms 37ms rustc 1.61.0
rust 4.rs 3182ms 1.1ms 4.5MB 3170ms 0ms rustc 1.61.0
rust 1-m.rs 3399ms 14ms 5.8MB 6590ms 83ms rustc 1.61.0
csharp 1-m.cs 4737ms 96ms 89.8MB 8880ms 67ms dotnet 6.0.300

Input: 1000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3-m.rs 85ms 15ms 3.0MB 137ms 7ms rustc 1.61.0
rust 3.rs 113ms 0.3ms 3.1MB 100ms 0ms rustc 1.61.0
rust 5-m.rs 120ms 13ms 3.2MB 200ms 0ms rustc 1.61.0
rust 4.rs 208ms 0.2ms 2.7MB 200ms 0ms rustc 1.61.0
rust 1-m.rs 234ms 2.8ms 2.8MB 427ms 7ms rustc 1.61.0
csharp 1-m.cs 429ms 21ms 78.6MB 657ms 47ms dotnet 6.0.300

edigits

Input: 250001

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 129ms 10ms 3.6MB 117ms 0ms rustc 1.61.0
rust 2.rs 538ms 2.3ms 3.6MB 527ms 0ms rustc 1.61.0
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms dotnet 6.0.300

Input: 100000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 38ms 0.8ms 2.9MB 30ms 0ms rustc 1.61.0
rust 2.rs 89ms 1.0ms 3.3MB 77ms 0ms rustc 1.61.0
csharp 1.cs 844ms 57ms 47.7MB 803ms 7ms dotnet 6.0.300

fasta

Input: 2500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 5-m.rs 166ms 1.3ms 2.3MB 287ms 0ms rustc 1.61.0
rust 5c-m.rs 175ms 6.6ms 1.2MB 297ms 0ms rustc 1.63.0
rust 1c.rs 191ms 3.2ms 0.7MB 180ms 0ms rustc 1.63.0
rust 1.rs 234ms 0.2ms 0.6MB 223ms 0ms rustc 1.61.0
csharp 5-m.cs 401ms 20ms 91.1MB 600ms 93ms dotnet 6.0.300
csharp 5-m.cs 528ms 11ms 34.3MB 877ms 113ms mono 6.12.0

Input: 250000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1c.rs 24ms 1.7ms 0.6MB 13ms 0ms rustc 1.63.0
rust 5c-m.rs 26ms 1.8ms 1.3MB 27ms 0ms rustc 1.63.0
rust 5-m.rs 27ms 2.0ms 1.3MB 27ms 0ms rustc 1.61.0
rust 1.rs 27ms 1.1ms 1.9MB 20ms 0ms rustc 1.61.0
csharp 5-m.cs 98ms 9.7ms 34.6MB 113ms 37ms mono 6.12.0
csharp 5.cs 100ms 11ms 40.3MB 77ms 37ms dotnet 6.0.300

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 2.2ms 0.6ms 2.0MB 0ms 0ms rustc 1.63.0
rust 1.rs 2.4ms 0.5ms 0.6MB 0ms 0ms rustc 1.61.0
csharp 1.cs 22ms 0.9ms 25.8MB 10ms 0ms mono 6.12.0
csharp 1.cs 52ms 6.4ms 29.0MB 20ms 4ms dotnet 6.0.300

http-server

Input: 3000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 216ms 54ms 47.0MB 120ms 130ms rustc 1.61.0
rust 2-m.rs 557ms 7.6ms 114.0MB 317ms 557ms rustc 1.61.0
csharp 2-http2.cs 665ms 24ms 113.5MB 733ms 93ms dotnet 6.0.300
rust 1-http2.rs 814ms 173ms 81.0MB 937ms 413ms rustc 1.61.0
csharp 2.cs 904ms 35ms 153.5MB 847ms 430ms dotnet 6.0.300
csharp 1-m.cs 937ms 49ms 171.9MB 943ms 470ms dotnet 6.0.300
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 75ms 19ms 15.7MB 27ms 23ms rustc 1.61.0
rust 2.rs 135ms 13ms 29.9MB 33ms 103ms rustc 1.61.0
rust 2-http2.rs 292ms 30ms 28.7MB 400ms 87ms rustc 1.61.0
rust 1-http2.rs 365ms 5.4ms 28.5MB 520ms 103ms rustc 1.61.0
csharp 2.cs 483ms 5.6ms 80.8MB 397ms 110ms dotnet 6.0.300
csharp 1.cs 503ms 19ms 91.9MB 490ms 127ms dotnet 6.0.300
csharp 2-http2.cs 519ms 15ms 83.2MB 510ms 60ms dotnet 6.0.300

json-serde

Input: sample 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 82ms 0.4ms 36.4MB 57ms 10ms rustc 1.61.0
rust 2.rs 88ms 4.3ms 38.1MB 60ms 13ms rustc 1.61.0
rust 1.rs 145ms 8.0ms 75.5MB 97ms 33ms rustc 1.61.0
csharp 2.cs 337ms 24ms 69.7MB 293ms 27ms dotnet 6.0.300
csharp 1.cs 542ms 2.6ms 147.1MB 487ms 73ms dotnet 6.0.300

Input: canada 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 3.rs 491ms 0.6ms 258.3MB 383ms 90ms rustc 1.61.0
rust 2.rs 492ms 1.3ms 258.4MB 370ms 103ms rustc 1.61.0
rust 1.rs 918ms 44ms 605.1MB 637ms 260ms rustc 1.61.0
csharp 2.cs 1989ms 91ms 275.2MB 2103ms 107ms dotnet 6.0.300
csharp 1.cs 3179ms 46ms 799.4MB 3127ms 390ms dotnet 6.0.300

knucleotide

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 360ms 6.6ms 28.2MB 633ms 10ms rustc 1.61.0
rust 8.rs 637ms 8.6ms 23.9MB 610ms 13ms rustc 1.61.0
csharp 6.cs 1274ms 7.0ms 77.3MB 1860ms 37ms dotnet 6.0.300
csharp 6-m.cs 1776ms 5.9ms 69.5MB 2940ms 27ms 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 50ms 3.4ms 16.1MB 63ms 7ms rustc 1.61.0
rust 8.rs 75ms 3.8ms 11.6MB 53ms 10ms rustc 1.61.0
csharp 6.cs 249ms 7.7ms 62.2MB 280ms 27ms dotnet 6.0.300
csharp 6.cs 270ms 6.3ms 55.6MB 357ms 20ms mono 6.12.0

lru

Input: 1000 1000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0-unsafe.rs 59ms 7.6ms 0.6MB 47ms 0ms rustc 1.61.0
rust 1.rs 77ms 12ms 2.1MB 70ms 0ms rustc 1.61.0
csharp 2.cs 197ms 1.2ms 27.4MB 183ms 0ms mono 6.12.0
csharp 2.cs 210ms 0.9ms 27.7MB 173ms 0ms dotnet 6.0.300
csharp 1.cs 1575ms 7.0ms 75.7MB 1540ms 20ms dotnet 6.0.300
csharp 1.cs 3411ms 3.0ms 47.7MB 3360ms 43ms 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 204ms 28ms 0.6MB 193ms 0ms rustc 1.61.0
rust 1.rs 285ms 29ms 2.2MB 277ms 0ms rustc 1.61.0
csharp 2.cs 464ms 4.2ms 28.0MB 437ms 7ms dotnet 6.0.300
csharp 2.cs 526ms 3.2ms 26.0MB 510ms 0ms mono 6.12.0
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms dotnet 6.0.300
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 32ms 0.5ms 0.6MB 20ms 0ms rustc 1.61.0
rust 1.rs 40ms 0.9ms 0.7MB 30ms 0ms rustc 1.61.0
csharp 2.cs 112ms 0.8ms 27.2MB 97ms 0ms mono 6.12.0
csharp 2.cs 132ms 3.8ms 25.9MB 97ms 7ms dotnet 6.0.300
csharp 1.cs 4345ms 104ms 62.0MB 4307ms 27ms dotnet 6.0.300
csharp 1.cs 4416ms 309ms 32.3MB 4393ms 10ms mono 6.12.0

mandelbrot

Input: 5000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 9.rs 362ms 2.1ms 4.9MB 350ms 0ms rustc 1.63.0
rust 8.rs 455ms 0.4ms 4.9MB 443ms 0ms rustc 1.61.0
csharp 2.cs 668ms 10ms 81.3MB 617ms 30ms dotnet 6.0.300
csharp 1.cs 3440ms 14ms 36.3MB 3410ms 3ms dotnet 6.0.300
csharp 3.cs 3646ms 4.4ms 38.0MB 3613ms 3ms dotnet 6.0.300
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 18ms 0.4ms 0.6MB 10ms 0ms rustc 1.63.0
rust 8.rs 22ms 0.8ms 0.6MB 10ms 0ms rustc 1.61.0
csharp 2.cs 92ms 1.5ms 38.9MB 57ms 10ms dotnet 6.0.300
csharp 3.cs 222ms 4.8ms 33.0MB 187ms 10ms dotnet 6.0.300
csharp 1.cs 318ms 2.1ms 33.2MB 290ms 3ms dotnet 6.0.300
csharp 1.cs 740ms 1.1ms 26.5MB 720ms 3ms mono 6.12.0

merkletrees

Input: 17

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 817ms 1.1ms 33.8MB 787ms 10ms rustc 1.61.0
csharp 2.cs 1061ms 2.4ms 388.0MB 937ms 167ms dotnet 6.0.300
csharp 1.cs 1098ms 27ms 305.2MB 957ms 170ms dotnet 6.0.300
csharp 1.cs 1920ms 11ms 147.1MB 2480ms 123ms mono 6.12.0

Input: 15

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 167ms 1.9ms 9.9MB 153ms 0ms rustc 1.61.0
csharp 2.cs 308ms 5.3ms 135.0MB 213ms 70ms dotnet 6.0.300
csharp 1.cs 323ms 1.1ms 164.5MB 227ms 80ms dotnet 6.0.300
csharp 1.cs 346ms 0.7ms 74.4MB 317ms 47ms 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 188ms 0.3ms 0.6MB 180ms 0ms rustc 1.61.0
rust 7-i.rs 276ms 22ms 0.6MB 263ms 0ms rustc 1.61.0
rust 3.rs 301ms 0.1ms 0.6MB 290ms 0ms rustc 1.63.0
rust 2.rs 337ms 0.4ms 0.6MB 330ms 0ms rustc 1.61.0
rust 1.rs 408ms 10ms 0.6MB 400ms 0ms rustc 1.61.0
csharp 9.cs 443ms 4.3ms 31.2MB 410ms 3ms dotnet 6.0.300
csharp 8.cs 618ms 8.4ms 27.2MB 583ms 7ms dotnet 6.0.300
csharp 8.cs 1298ms 29ms 25.0MB 1280ms 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 23ms 0.4ms 0.6MB 10ms 0ms rustc 1.61.0
rust 7-i.rs 27ms 0.1ms 0.6MB 20ms 0ms rustc 1.61.0
rust 3.rs 32ms 1.3ms 0.6MB 20ms 0ms rustc 1.63.0
rust 2.rs 36ms 2.0ms 0.6MB 30ms 0ms rustc 1.61.0
rust 1.rs 41ms 2.7ms 2.1MB 30ms 0ms rustc 1.61.0
csharp 9.cs 96ms 3.5ms 27.2MB 60ms 0ms dotnet 6.0.300
csharp 8.cs 112ms 7.1ms 29.1MB 83ms 0ms dotnet 6.0.300
csharp 8.cs 147ms 9.2ms 25.0MB 133ms 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 460ms 2.0ms 6.6MB 440ms 0ms rustc 1.61.0
csharp 2.cs 1007ms 64ms 42.1MB 973ms 3ms dotnet 6.0.300
rust 1.rs 1182ms 8.4ms 40.9MB 1157ms 7ms rustc 1.61.0
csharp 1.cs 1293ms 32ms 96.5MB 1240ms 27ms dotnet 6.0.300
csharp 1.cs 1450ms 53ms 86.6MB 1417ms 20ms mono 6.12.0
csharp 2.cs 2628ms 182ms 32.4MB 2617ms 0ms mono 6.12.0

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 2.rs 105ms 1.2ms 3.2MB 90ms 0ms rustc 1.61.0
rust 1.rs 127ms 0.8ms 11.7MB 110ms 0ms rustc 1.61.0
csharp 1.cs 183ms 2.0ms 48.7MB 143ms 13ms dotnet 6.0.300
csharp 1.cs 199ms 1.6ms 42.6MB 180ms 3ms mono 6.12.0
csharp 2.cs 310ms 2.5ms 31.6MB 270ms 10ms dotnet 6.0.300
csharp 2.cs 612ms 0.3ms 26.1MB 600ms 0ms mono 6.12.0

pidigits

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 1740ms 1.0ms 2.9MB 1573ms 147ms rustc 1.61.0
rust 2.rs 1804ms 7.3ms 2.7MB 1733ms 60ms rustc 1.61.0
csharp 1.cs timeout 0.0ms 0.0MB 0ms 0ms dotnet 6.0.300

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 1.rs 375ms 1.1ms 2.7MB 353ms 7ms rustc 1.61.0
rust 2.rs 408ms 1.2ms 2.5MB 400ms 0ms rustc 1.61.0
csharp 1.cs 1348ms 3.0ms 79.6MB 1333ms 43ms dotnet 6.0.300

regex-redux

Input: 2500000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 534ms 33ms 77.5MB 703ms 20ms rustc 1.61.0
csharp 5.cs 2913ms 188ms 589.8MB 2837ms 267ms dotnet 7.0.100
csharp 5p.cs 3745ms 33ms 591.6MB 3603ms 257ms dotnet 7.0.100
csharp 5.cs 3954ms 237ms 522.8MB 3853ms 243ms dotnet 6.0.300

Input: 250000_in

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 7.rs 58ms 0.7ms 11.8MB 63ms 0ms rustc 1.61.0
csharp 5.cs 455ms 7.3ms 168.0MB 390ms 50ms dotnet 7.0.100
csharp 5p.cs 494ms 19ms 162.0MB 423ms 53ms dotnet 7.0.100
csharp 5.cs 537ms 6.2ms 89.3MB 483ms 43ms dotnet 6.0.300

secp256k1

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 126ms 8.2ms 0.7MB 117ms 0ms rustc 1.61.0
rust 1.rs 1769ms 116ms 0.7MB 1757ms 0ms rustc 1.61.0
csharp 1.cs 4641ms 242ms 79.1MB 4623ms 33ms dotnet 6.0.300

Input: 500

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 0.rs 36ms 0.6ms 0.7MB 27ms 0ms rustc 1.61.0
rust 1.rs 462ms 0.7ms 0.6MB 450ms 0ms rustc 1.61.0
csharp 1.cs 1157ms 36ms 75.0MB 1140ms 23ms dotnet 6.0.300

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 872ms 1.5ms 2.6MB 1613ms 3ms rustc 1.63.0
rust 7-m.rs 893ms 2.6ms 2.2MB 1717ms 0ms rustc 1.61.0
rust 8.rs 1518ms 1.1ms 2.5MB 1510ms 0ms rustc 1.63.0
rust 2-m.rs 1706ms 54ms 2.1MB 3290ms 7ms rustc 1.61.0
rust 7.rs 1722ms 3.0ms 2.2MB 1710ms 0ms rustc 1.61.0
csharp 3-m.cs 2478ms 3.8ms 29.7MB 4743ms 17ms dotnet 6.0.300
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 1.61.0

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
rust 8-m.rs 220ms 6.5ms 2.4MB 397ms 0ms rustc 1.63.0
rust 7-m.rs 233ms 1.5ms 0.7MB 423ms 0ms rustc 1.61.0
rust 7.rs 416ms 29ms 0.6MB 403ms 0ms rustc 1.61.0
rust 8.rs 432ms 0.5ms 2.2MB 420ms 0ms rustc 1.63.0
rust 2-m.rs 435ms 7.8ms 2.3MB 820ms 0ms rustc 1.61.0
csharp 3-m.cs 686ms 0.7ms 30.1MB 1230ms 10ms dotnet 6.0.300
rust 2.rs 1371ms 0.7ms 0.6MB 1360ms 0ms rustc 1.61.0
csharp 3-m.cs 2554ms 15ms 27.7MB 4747ms 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 60ms 1.7ms 2.3MB 100ms 0ms rustc 1.63.0
rust 7-m.rs 64ms 0.6ms 0.7MB 100ms 0ms rustc 1.61.0
rust 7.rs 103ms 7.6ms 0.6MB 93ms 0ms rustc 1.61.0
rust 8.rs 107ms 6.1ms 2.2MB 97ms 0ms rustc 1.63.0
rust 2-m.rs 115ms 3.3ms 0.7MB 200ms 0ms rustc 1.61.0
csharp 3-m.cs 227ms 5.2ms 27.3MB 337ms 7ms dotnet 6.0.300
rust 2.rs 391ms 0.6ms 0.6MB 380ms 0ms rustc 1.61.0
csharp 3-m.cs 662ms 0.1ms 29.7MB 1207ms 0ms mono 6.12.0