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How to set the innodb_buffer_pool_size size in the mysql parameter

2025-01-16 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Database >

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This article mainly shows you "how to set the innodb_buffer_pool_size size in the mysql parameters", which is easy to understand and clear. I hope it can help you solve your doubts. Let me lead you to study and learn how to set the innodb_buffer_pool_size size in the mysql parameters.

Mysql > show global variables like 'innodb_buffer_pool_size'

+-+ +

| | Variable_name | Value |

+-+ +

| | innodb_buffer_pool_size | 134217728 | |

+-+ +

1 row in set (0.00 sec)

So how do you set the size of this parameter? First, check the runtime buffer pool-related data metrics:

Mysql > show global status like 'Innodb_buffer_pool_pages_data'

+-+ +

| | Variable_name | Value |

+-+ +

| | Innodb_buffer_pool_pages_data | 314 | |

+-+ +

1 row in set (0.00 sec)

Mysql > show global status like 'Innodb_buffer_pool_pages_total'

+-+ +

| | Variable_name | Value |

+-+ +

| | Innodb_buffer_pool_pages_total | 8191 | |

+-+ +

1 row in set (0.00 sec)

Mysql > show global status like 'Innodb_page_size'

+-+ +

| | Variable_name | Value |

+-+ +

| | Innodb_page_size | 16384 | |

+-+ +

1 row in set (0.00 sec)

The meanings of the above three indicators are as follows:

Innodb_buffer_pool_pages_data

The number of pages in the InnoDB buffer pool containing data. The number includes both dirty and

Clean pages.

Innodb_buffer_pool_pages_total

The total size of the InnoDB buffer pool, in pages.

Innodb_page_size

InnoDB page size (default 16KB). Many values are counted in pages; the page size enables them to be

Easily converted to bytes

Calculate Innodb_buffer_pool_pages_data/Innodb_buffer_pool_pages_total*100%

Increase innodb_buffer_pool_size when the result is > 95%, and 75% of physical memory is recommended.

Reduce innodb_buffer_pool_size when the result is less than 95%

Recommended setting size is: Innodb_buffer_pool_pages_data* Innodb_page_size * 1.05 / (1024 / 1024 / 1024)

Commands such as: SET GLOBAL innodb_buffer_pool_size= 32423423: unit kb

The above is all the contents of the article "how to set the innodb_buffer_pool_size size in the mysql parameters". Thank you for reading! I believe we all have a certain understanding, hope to share the content to help you, if you want to learn more knowledge, welcome to follow the industry information channel!

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