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Displaying posts with tag: mysql buffer pool size allocation (reset)
How to get confused about buffer pool size allocation?

How it feels when you realize that, something going to be scary in term of question – “Wait, why? how?”
Let’s see:

I am trying to allocate 9G buffer pool size with 64 instances:


From error log it said that:

InnoDB: Initializing buffer pool, total size = 16G, instances = 64, chunk size = 128M

“Wait, why? how?” N1

From select it is also allocated 16G:

mysql> select @@innodb_buffer_pool_size/1024/1024/1024;
| @@innodb_buffer_pool_size/1024/1024/1024 |
| 16.000000000000 |

Just continue to increase pool size:

If you give 17G:

[Note] InnoDB: Initializing buffer pool, …

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