[ARROW-14481] [C++] Investigate recent regressions in some utf8 kernel benchmarks

• Type: Improvement
• Status: Closed
• Priority: Major
• Resolution: Cannot Reproduce
• Component/s: C++
• Labels: kernel
• External issue URL: https://github.com/apache/arrow/issues/30040
• Assignee: Unassigned
• Reporter: David Li
• Created: 26/Oct/21 22:09
• Updated: 11/Jan/23 08:40
• Resolved: 23/Nov/21 18:11

Description

See https://conbench.ursa.dev/benchmarks/6ccff6887e7c47148a09fe46f18c8688/

Some (on the surface) unrelated commits have caused performance for a few string kernels to plummet. We should try to replicate locally.

Issue Links

• Discovered while testing: ARROW-13879 [C++] Mixed support for binary types in regex functions