Cloud SQL for MySQL now supports the innodb_cloudsql_managed_buffer_pool_tuneup_pct database flag.

Cloud SQL for MySQL now supports the innodb_cloudsql_managed_buffer_pool_tuneup_pct database flag.

Managed buffer pool automatically adjusts the InnoDB buffer pool size to reduce out-of-memory events. When instance memory usage remains at or below 70% for 10 minutes or longer after prior reductions, Cloud SQL increases the buffer pool size. You can now use the innodb_cloudsql_managed_buffer_pool_tuneup_pct flag to change this 70% threshold to a different percentage. Increase the threshold to restore the InnoDB buffer pool size when baseline usage exceeds 70%, or decrease it to preserve additional RAM allocation for memory spikes.

This flag requires the Cloud SQL maintenance version MYSQL_VERSION.R20260726.00_05 or later. For more information, see Enable managed buffer pool.