MySQL/MariaDB Settings Calculator

Select a predefined template or customize your own settings.

Total Server Memory in GB
Reserved Memory for OS in GB
Memory for Other Tasks in GB
Affects optimal InnoDB flush method settings
Affects InnoDB I/O optimizations

Performance Score

0 Performance Score

Recommendations

Frequently Asked Questions

What is innodb_buffer_pool_size?

The innodb_buffer_pool_size is the size in bytes of the memory buffer InnoDB uses to cache data and indexes of its tables.

How is max_connections calculated?

In this calculator, max_connections is estimated as 100 connections per GB of available memory. However, the actual optimal value depends on your specific workload and server configuration.

Why is some memory reserved for the OS?

Reserving memory for the OS ensures that the system has enough resources to run smoothly, preventing potential slowdowns or crashes due to memory exhaustion.

Are these settings optimal for all scenarios?

No, these are general recommendations. The optimal settings can vary greatly depending on your specific use case, workload, and hardware. It's always best to monitor your system's performance and adjust accordingly.

Why do different storage types matter?

SSDs and NVMe drives have much higher IOPS (Input/Output Operations Per Second) than traditional HDDs. Settings like innodb_io_capacity, innodb_flush_neighbors, and innodb_flush_method should be optimized differently based on your storage type. For example, disabling innodb_flush_neighbors improves performance on SSDs but can harm performance on HDDs.

How is innodb_flush_method chosen?

The optimal innodb_flush_method varies by operating system. For Linux, O_DIRECT is generally recommended as it bypasses the filesystem cache. For Windows, unbuffered is typically best, while macOS often works best with fsync.