C++ VS Java 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.)

fannkuch-redux

Input: 11

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 753ms 4.3ms 1.0MB 1460ms 0ms g++ 12.2.0
cpp 1-im.cpp 772ms 3.1ms 3.5MB 1500ms 0ms clang++ 11.0.0
java 1-m.java 1645ms 15ms 103.7MB 3117ms 37ms graal/jvm 17.0.4
java 1-m.java 1708ms 31ms 42.4MB 3183ms 53ms openjdk/zgc 19
java 1-m.java 1717ms 10ms 42.4MB 3273ms 20ms openjdk 19
java 1-m.java 1719ms 55ms 44.3MB 3310ms 7ms openjdk 20

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1-im.cpp 72ms 1.9ms 1.0MB 120ms 0ms g++ 12.2.0
cpp 1-im.cpp 74ms 3.1ms 3.5MB 123ms 0ms clang++ 11.0.0
java 1-m.java 266ms 21ms 92.6MB 427ms 23ms graal/jvm 17.0.4
java 1-m.java 269ms 3.1ms 43.3MB 430ms 10ms openjdk 20
java 1-m.java 277ms 1.4ms 42.0MB 450ms 10ms openjdk 19
java 1-m.java 310ms 4.0ms 42.1MB 430ms 57ms openjdk/zgc 19

helloworld

Input: QwQ

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 2.4ms 0.6ms 1.1MB 0ms 0ms clang++ 11.0.0
cpp 1.cpp 3.1ms 2.0ms 1.0MB 0ms 0ms g++ 12.2.0
java 1.java 71ms 3.3ms 61.0MB 72ms 8ms graal/jvm 17.0.4
java 1.java 76ms 2.2ms 40.3MB 78ms 8ms openjdk 19
java 1.java 82ms 3.1ms 42.4MB 76ms 10ms openjdk 20
java 1.java 121ms 3.2ms 41.8MB 78ms 54ms openjdk/zgc 19

nbody

Input: 5000000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 226ms 1.0ms 0.9MB 220ms 0ms g++ 12.2.0
cpp 0-i.cpp 258ms 1.2ms 1.1MB 247ms 0ms clang++ 11.0.0
cpp 1.cpp 339ms 0.7ms 1.0MB 330ms 0ms g++ 12.2.0
cpp 1.cpp 384ms 0.4ms 1.1MB 370ms 0ms clang++ 11.0.0
java 1.java 545ms 1.4ms 88.5MB 593ms 17ms graal/jvm 17.0.4
java 1.java 555ms 2.6ms 42.2MB 570ms 10ms openjdk 20
java 1.java 558ms 4.1ms 42.2MB 573ms 13ms openjdk 19
java 1.java 610ms 3.8ms 42.6MB 587ms 53ms openjdk/zgc 19
java 2.java 1908ms 19ms 551.1MB 1937ms 120ms openjdk 20
java 2.java 1908ms 15ms 543.4MB 1937ms 117ms openjdk 19
java 2.java 2579ms 8.8ms 1221.6MB 1997ms 767ms openjdk/zgc 19

Input: 500000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 0-i.cpp 26ms 1.3ms 1.0MB 13ms 0ms g++ 12.2.0
cpp 0-i.cpp 29ms 0.6ms 1.1MB 20ms 0ms clang++ 11.0.0
cpp 1.cpp 37ms 0.7ms 1.0MB 30ms 0ms g++ 12.2.0
cpp 1.cpp 41ms 0.2ms 1.1MB 30ms 0ms clang++ 11.0.0
java 1.java 137ms 2.0ms 42.9MB 157ms 13ms openjdk 20
java 1.java 143ms 6.7ms 42.3MB 160ms 13ms openjdk 19
java 1.java 145ms 14ms 86.5MB 183ms 23ms graal/jvm 17.0.4
java 1.java 181ms 1.3ms 42.2MB 160ms 50ms openjdk/zgc 19
java 2.java 410ms 8.8ms 339.4MB 477ms 70ms openjdk 20
java 2.java 415ms 5.0ms 353.2MB 477ms 73ms openjdk 19
java 2.java 681ms 3.0ms 454.9MB 543ms 293ms openjdk/zgc 19

nsieve

Input: 12

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 419ms 3.4ms 7.5MB 407ms 0ms clang++ 11.0.0
cpp 1.cpp 644ms 2.2ms 7.7MB 630ms 0ms g++ 12.2.0
java 1.java 693ms 12ms 88.9MB 727ms 17ms openjdk 20
java 1.java 710ms 19ms 86.4MB 733ms 20ms openjdk 19
java 1.java 906ms 6.4ms 110.9MB 870ms 77ms openjdk/zgc 19
java 2.java 1009ms 4.8ms 52.5MB 1050ms 7ms openjdk 20
java 2.java 1023ms 0.1ms 51.3MB 1010ms 53ms openjdk/zgc 19
java 2.java 1034ms 32ms 54.1MB 1070ms 13ms openjdk 19
java 1-m.java 1209ms 11ms 163.8MB 1860ms 63ms graal/jvm 17.0.4
java 2-m.java 1836ms 24ms 126.4MB 3397ms 40ms graal/jvm 17.0.4

Input: 10

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 1.cpp 94ms 0.3ms 3.7MB 80ms 0ms clang++ 11.0.0
cpp 1.cpp 153ms 0.3ms 4.0MB 143ms 0ms g++ 12.2.0
java 1.java 230ms 2.9ms 62.0MB 260ms 10ms openjdk 19
java 1.java 230ms 1.4ms 60.8MB 257ms 20ms openjdk 20
java 1.java 277ms 1.4ms 59.2MB 257ms 67ms openjdk/zgc 19
java 2.java 321ms 3.1ms 46.7MB 363ms 10ms openjdk 20
java 2.java 326ms 6.8ms 48.4MB 360ms 13ms openjdk 19
java 1-m.java 330ms 6.9ms 135.8MB 470ms 47ms graal/jvm 17.0.4
java 2.java 355ms 4.1ms 44.3MB 343ms 50ms openjdk/zgc 19
java 2-m.java 606ms 0.6ms 127.4MB 1067ms 50ms graal/jvm 17.0.4

spectral-norm

Input: 8000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 1061ms 1.3ms 3.1MB 2073ms 0ms clang++ 11.0.0
cpp 7-m.cpp 1061ms 3.4ms 3.2MB 2073ms 3ms clang++ 11.0.0
cpp 7-m.cpp 1062ms 2.6ms 0.9MB 2083ms 0ms g++ 12.2.0
cpp 8-m.cpp 1063ms 0.8ms 0.9MB 2077ms 0ms g++ 12.2.0
cpp 6-im.cpp 2243ms 24ms 3.2MB 4400ms 0ms clang++ 11.0.0
cpp 6-im.cpp 2243ms 21ms 1.0MB 4400ms 0ms g++ 12.2.0
java 2-m.java 4304ms 3.1ms 108.4MB 8300ms 40ms graal/jvm 17.0.4
java 2.java timeout 0.0ms 0.0MB 0ms 0ms openjdk 19
java 2.java timeout 0.0ms 0.0MB 0ms 0ms openjdk 20
java 2.java timeout 0.0ms 0.0MB 0ms 0ms openjdk/zgc 19

Input: 4000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 276ms 1.4ms 3.2MB 517ms 0ms clang++ 11.0.0
cpp 7-m.cpp 279ms 4.6ms 0.9MB 523ms 0ms g++ 12.2.0
cpp 8-m.cpp 279ms 3.6ms 0.9MB 520ms 0ms g++ 12.2.0
cpp 7-m.cpp 279ms 5.3ms 3.2MB 520ms 0ms clang++ 11.0.0
cpp 6-im.cpp 567ms 1.3ms 1.0MB 1100ms 0ms g++ 12.2.0
cpp 6-im.cpp 568ms 1.5ms 3.2MB 1097ms 0ms clang++ 11.0.0
java 2-m.java 1236ms 17ms 104.3MB 2263ms 53ms graal/jvm 17.0.4
java 2-m.java 1594ms 56ms 44.3MB 3033ms 7ms openjdk 20
java 2-m.java 1771ms 183ms 44.6MB 3290ms 53ms openjdk/zgc 19
java 2-m.java 1825ms 192ms 44.4MB 3473ms 17ms openjdk 19

Input: 2000

lang code time stddev peak-mem mem time(user) time(sys) compiler compiler/runtime
cpp 8-m.cpp 76ms 1.1ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 7-m.cpp 76ms 0.8ms 1.0MB 130ms 0ms g++ 12.2.0
cpp 7-m.cpp 76ms 2.1ms 3.2MB 130ms 0ms clang++ 11.0.0
cpp 8-m.cpp 77ms 1.9ms 1.0MB 130ms 0ms g++ 12.2.0
cpp 6-im.cpp 150ms 0.2ms 3.2MB 277ms 0ms clang++ 11.0.0
cpp 6-im.cpp 151ms 1.4ms 1.0MB 280ms 0ms g++ 12.2.0
java 2-m.java 430ms 9.7ms 99.1MB 727ms 30ms graal/jvm 17.0.4
java 2-m.java 589ms 3.9ms 44.2MB 1060ms 13ms openjdk 19
java 2-m.java 600ms 7.1ms 42.7MB 1070ms 20ms openjdk 20
java 2-m.java 648ms 11ms 44.4MB 1083ms 53ms openjdk/zgc 19