MySQL 8.0.15 performs worse in sysbench oltp_read_write than MySQL 5.7.25 Initially I was testing group replication performance and was puzzled why MySQL 8.0.15 performs consistently worse than MySQL 5.7.25. It appears that a single server instance is affected by a performance degradation. My testing setup Hardware details: Bare metal server provided by packet.net, instance size: [&]

https://www.percona.com/blog/2019/02/21/mysql-8-is-not-always-faster-than-mysql-5-7/