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Re: MySQL became too slowly when using O_DIRECT
Posted by: Peter Brawley
Date: June 11, 2018 08:11AM

Sorry to be unclear, I didn't mean MySQL variables, which I think won't help to clarify why fsync slows your i/o so noticeably, I mean disk-level variables, eg those referenced in ...

https://bugs.mysql.com/bug.php?id=45892

https://stackoverflow.com/questions/41440492/why-mysql-still-use-fsync-to-flush-the-data-when-the-option-is-o-direct

https://stackoverflow.com/questions/31579418/how-to-improve-mariadb-10-0-20-read-write-performance-than-mysql-5-1-43

https://dba.stackexchange.com/questions/1568/clarification-on-mysql-innodb-flush-method-variable/1575#1575

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