Yes, it seems that Oracle does care about performance in high-concurrency applications: https://www.mysql.com/why-mysql/benchmarks/
Even their own benchmarks show MySQL 5.7 dipping below previous versions at the low end of the concurrency scale.
Even their own benchmarks show MySQL 5.7 dipping below previous versions at the low end of the concurrency scale.
I also showed the impact for IO-bound workloads, and even there the regression is larger than I want. But not as bad as the in-memory workloads.