crc32bench

CRC32 Benchmark for x86_64 processors

- Prerequisities -

    C compiler: gcc or clang
    TASKSET: part of the util-linux package

- Compilation -

    cc -Wall -O0 crc32bench.c -o crc32bench

- Input -

    # ASM version
    taskset -c 1 ./crc32bench a GenuineIntel AuthenticAMD
    # C version
    taskset -c 1 ./crc32bench c GenuineIntel AuthenticAMD

- Results (gcc) -

    # ASM version
    Benchmark = 8882632044 cycles
    crc32bench(GenuineIntel,12) => 75a2ba39
    crc32bench(GenuineIntel,12) => 75a2ba39
    # C version (gcc)
    Benchmark = 31046108769 cycles
    crc32bench(GenuineIntel,12) => 75a2ba39
    crc32bench(AuthenticAMD,12) => 3485bbd3
    # C version (clang)
    Benchmark = 17586801852 cycles
    crc32bench(GenuineIntel,12) => 75a2ba39
    crc32bench(AuthenticAMD,12) => 3485bbd3