Bug #99364 The default value of innodb_purge_threads is 4, not 1

• Submitted: 27 Apr 2020 4:09
• Modified: 20 Jul 2020 8:54
• Reporter: Sho Iizuka
• Status: Closed
• Category: MySQL Server: Documentation
• Severity: S3 (Non-critical)
• Version: 5.7, 8.0
• OS: Any
• CPU Architecture: Any

[27 Apr 2020 4:09] Sho Iizuka

Description:
Even though the default value of innodb_purge_threads is 4 in MySQL 5.7 or later, some of the documentation says "The default value is 1".

How to repeat:
Open the following pages.

* https://dev.mysql.com/doc/refman/5.7/en/innodb-parameters.html#sysvar_innodb_purge_threads
* https://dev.mysql.com/doc/refman/8.0/en/innodb-parameters.html#sysvar_innodb_purge_threads

The content of tables are correct, but the descriptions are incorrect.

[27 Apr 2020 5:34] MySQL Verification Team

Hello Sho Iizuka-San,

Thank you for the report and feedback.

regards,
Umesh

[20 Jul 2020 8:54] Erlend Dahl

This has now been addressed in the documentation.