Update MySQL redo log writer thread guidance#3449
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jasonrandrews merged 1 commit intoJun 30, 2026
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- Add guidance for innodb_log_writer_threads, including the default behavior change after MySQL 8.4 and the current MySQL 9.x behavior that depends on binary logging and logical processor count. - Clarify that innodb_sync_spin_loops applies to internal InnoDB mutex and rw-lock polling, not SQL transaction locks used to enforce transaction isolation semantics.
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Add guidance for innodb_log_writer_threads, including the default behavior change after MySQL 8.4 and the current MySQL 9.x behavior that depends on binary logging and logical processor count.
Clarify that innodb_sync_spin_loops applies to internal InnoDB mutex and rw-lock polling, not SQL transaction locks used to enforce transaction isolation semantics.
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