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Posted to commits@doris.apache.org by GitBox <gi...@apache.org> on 2022/06/20 03:43:11 UTC
[GitHub] [doris] xiaokang commented on pull request #10169: optimize substr performance
xiaokang commented on PR #10169:
URL: https://github.com/apache/doris/pull/10169#issuecomment-1159934807
I have done the performance comparison test. The test shows that:
1. volnitsky algorithm with searching across rows is the best, which is 2.0x and 1.5x faster than std::search in two test cases. And gcc
2. gcc-11.1.0 and clang-13.0.1 is almost the same, with little difference and is negligible since tested at different time.
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