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Last active February 4, 2025 23:57
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scalar v/s SSE42
Raw
bench.log
Comparing scalar_crc32c to sse42_crc32c (from ./bench)
Benchmark Time CPU Time Old Time New CPU Old CPU New
------------------------------------------------------------------------------------------------------------------------------------
[scalar_crc32c vs. sse42_crc32c]/64 -0.8147 -0.8148 33 6 33 6
[scalar_crc32c vs. sse42_crc32c]/128 -0.8962 -0.8962 88 9 88 9
[scalar_crc32c vs. sse42_crc32c]/256 -0.9200 -0.9200 211 17 211 17
[scalar_crc32c vs. sse42_crc32c]/512 -0.9389 -0.9389 486 30 486 30
[scalar_crc32c vs. sse42_crc32c]/1024 -0.9452 -0.9452 1037 57 1037 57
[scalar_crc32c vs. sse42_crc32c]/2049 -0.9456 -0.9456 2140 116 2140 116
OVERALL_GEOMEAN -0.8063 -0.8063 0 0 0 0
Comparing sse42_crc32c to avx512_crc32c (from ./bench)
Benchmark Time CPU Time Old Time New CPU Old CPU New
------------------------------------------------------------------------------------------------------------------------------------
[sse42_crc32c vs. avx512_crc32c]/64 +0.0276 +0.0276 6 6 6 6
[sse42_crc32c vs. avx512_crc32c]/128 -0.0057 -0.0032 9 9 9 9
[sse42_crc32c vs. avx512_crc32c]/256 -0.4314 -0.4316 16 9 16 9
[sse42_crc32c vs. avx512_crc32c]/512 -0.5103 -0.5103 30 15 30 15
[sse42_crc32c vs. avx512_crc32c]/1024 -0.5371 -0.5378 57 26 57 26
[sse42_crc32c vs. avx512_crc32c]/2049 -0.5580 -0.5580 116 51 116 51
OVERALL_GEOMEAN -0.2548 -0.2548 0 0 0 0
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