innodb_buffer_pool_load_at_startup
INFO
Rule IDs: bp_007
Overview
- Purpose
- Documented in the MySQL 8.4 manual as a server system variable (scope: Global). Purpose and semantics are described at the linked manual page.
- Dynamic (MySQL 8.4 reference)
- MySQL 8.4 marks this variable as not dynamic (
Dynamic= No). It must be set inmy.cnfor on the command line; changing it requires a restart. - Default value
- ON (MySQL 8.4)
- Version and product notes
- MariaDB and Percona Server may use different names, defaults, or dynamic behavior; verify their documentation.
- Documentation
- https://dev.mysql.com/doc/refman/8.4/en/innodb-parameters.html#sysvar_innodb_buffer_pool_load_at_startup
- Other vendors
What is checked
Rules that reference this variable, with their severity and what each rule detects:
- INFO
bp_007: Enable innodb_buffer_pool_load_at_startup with dump_at_shutdown=ON for faster warm-up.
Tuning guidance
- Recommended actions:
- Enable innodb_buffer_pool_load_at_startup with dump_at_shutdown=ON for faster warm-up.
- Trade-offs: Larger buffer pools improve hit ratio but consume more RAM and increase restart warm-up time. Over-allocating risks OOM or swap. Under-allocating means more disk I/O.
Example
Configure in my.cnf (or equivalent) or server startup options, then restart.