Multi-line parsing supports SIMD optimization #1872
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@zhongyuankai Can you share the performance comparison before and after this PR? |
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yyuuttaaoo
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Dec 17, 2024
| const int vecSize = 32; | ||
| __m256i newlineVec = _mm256_set1_epi8('\n'); | ||
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| for (int32_t pos = end - vecSize; pos >= 0; pos -= vecSize) { |
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如果不是32的整数倍长度怎么办？好像剩下的没检查？
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Improve the performance of parsing newlines through SIMD.
The following are the performance comparison test results under 150 tasks and 180MB/s traffic:
Before optimization:
After optimization:
After optimization, the performance is improved by about 8%. If the
GetNextLinemethod is tested separately, the performance is improved by 1 times.