zclllyybb opened a new pull request, #18697: URL: https://github.com/apache/doris/pull/18697
# Proposed changes before: ``` mysql [tpch]>select c_comment from customer; ...... 15000000 rows in set (9.20 sec) mysql [tpch]>select trim(c_comment) from customer; ...... 15000000 rows in set (10.26 sec) ``` after: ``` mysql [tpch]>select c_comment from customer; ...... 15000000 rows in set (9.15 sec) mysql [tpch]>select trim(c_comment) from customer; ...... 15000000 rows in set (9.15 sec) ``` ## Problem summary Introduced a set of low level tools for handwriting simd instructions. Now we can unify our simd usage and easily adapt to greater instructions set. Considering Doris's main situations to be used are high-performance servers, introduce avx512f(launched in 2016) and avx512bw(launched in 2017)... is meaningful. ## Checklist(Required) * [ ] Does it affect the original behavior * [ ] Has unit tests been added * [ ] Has document been added or modified * [ ] Does it need to update dependencies * [x] Is this PR support rollback (If NO, please explain WHY) ## Further comments Will soonly introduce more tools to completely improve our code's performance. It's expected mainly about string algorithm. -- This is an automated message from the Apache Git Service. To respond to the message, please log on to GitHub and use the URL above to go to the specific comment. To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For queries about this service, please contact Infrastructure at: us...@infra.apache.org --------------------------------------------------------------------- To unsubscribe, e-mail: commits-unsubscr...@doris.apache.org For additional commands, e-mail: commits-h...@doris.apache.org
