If your MySQL database tables still run on the MyISAM engine (formerly the default), you may want to consider switching to the InnoDB engine instead, for better reliability and scalability. To update a table from MyISAM to InnoDB you can run this SQL:
ALTER TABLE table_name ENGINE = InnoDB;
Once you’ve switched all your tables to InnoDB, you can adjust some memory usage settings.
Update MySQL memory usage settings for InnoDB
Firstly, check the current settings for innerdb_buffer_pool_size
. You can view these settings by running the following SQL (you can run this in phpMyAdmin):
SHOW VARIABLES;
Look for innerdb_buffer_pool_size
. You’ll see it’s been assigned a particular number of bytes. This allocated cache stores table and index data, and keeps queries and query results in memory for faster lookup. So the more memory you can afford to dedicate to it the better – MySQL recommends to use 80% of the available memory. You can read about it here .
I had 2GB of server memory to play with, so I chose a moderate 1GB to allocate to the innerdb_buffer_pool_size
. To add this setting, we’ll create and load our own custom MySQL cnf
file, which will house some extra settings.
On Linux Ubuntu , add a new cnf
file here:
sudo nano /etc/mysql/conf.d/innodb.cnf
The file name must end in .cnf , but call it whatever you like, so long as it’s not clashing with another file name.
Inside of this file, we add our new memory allocation:
[mysqld]innodb_buffer_pool_size = 1024Mkey_buffer_size = 8M
I’ve also added a new key_buffer_size
value of 8MB. If you’ve deprecated your use of the MyISAM engine, it’s recommended to reduce this memory allocation. Previously I had 16M for key_buffer_size , so I decided to half it.
Finish off by restarting MySQL so that the changes can be applied:
sudo service mysql restart
If you check the MySQL variables once more:
SHOW VARIABLES;
You’ll hopefully now have some new and importantly increased memory values for innodb_buffer_pool_size and key_buffer_size
You’ve successfully optimised your MySQL database a bit more!

This article explores optimizing MySQL memory usage in Docker. It discusses monitoring techniques (Docker stats, Performance Schema, external tools) and configuration strategies. These include Docker memory limits, swapping, and cgroups, alongside

This article addresses MySQL's "unable to open shared library" error. The issue stems from MySQL's inability to locate necessary shared libraries (.so/.dll files). Solutions involve verifying library installation via the system's package m

The article discusses using MySQL's ALTER TABLE statement to modify tables, including adding/dropping columns, renaming tables/columns, and changing column data types.

This article compares installing MySQL on Linux directly versus using Podman containers, with/without phpMyAdmin. It details installation steps for each method, emphasizing Podman's advantages in isolation, portability, and reproducibility, but also

This article provides a comprehensive overview of SQLite, a self-contained, serverless relational database. It details SQLite's advantages (simplicity, portability, ease of use) and disadvantages (concurrency limitations, scalability challenges). C

Article discusses configuring SSL/TLS encryption for MySQL, including certificate generation and verification. Main issue is using self-signed certificates' security implications.[Character count: 159]

This guide demonstrates installing and managing multiple MySQL versions on macOS using Homebrew. It emphasizes using Homebrew to isolate installations, preventing conflicts. The article details installation, starting/stopping services, and best pra

Article discusses popular MySQL GUI tools like MySQL Workbench and phpMyAdmin, comparing their features and suitability for beginners and advanced users.[159 characters]


Hot AI Tools

Undresser.AI Undress
AI-powered app for creating realistic nude photos

AI Clothes Remover
Online AI tool for removing clothes from photos.

Undress AI Tool
Undress images for free

Clothoff.io
AI clothes remover

AI Hentai Generator
Generate AI Hentai for free.

Hot Article

Hot Tools

SAP NetWeaver Server Adapter for Eclipse
Integrate Eclipse with SAP NetWeaver application server.

MinGW - Minimalist GNU for Windows
This project is in the process of being migrated to osdn.net/projects/mingw, you can continue to follow us there. MinGW: A native Windows port of the GNU Compiler Collection (GCC), freely distributable import libraries and header files for building native Windows applications; includes extensions to the MSVC runtime to support C99 functionality. All MinGW software can run on 64-bit Windows platforms.

VSCode Windows 64-bit Download
A free and powerful IDE editor launched by Microsoft

MantisBT
Mantis is an easy-to-deploy web-based defect tracking tool designed to aid in product defect tracking. It requires PHP, MySQL and a web server. Check out our demo and hosting services.

mPDF
mPDF is a PHP library that can generate PDF files from UTF-8 encoded HTML. The original author, Ian Back, wrote mPDF to output PDF files "on the fly" from his website and handle different languages. It is slower than original scripts like HTML2FPDF and produces larger files when using Unicode fonts, but supports CSS styles etc. and has a lot of enhancements. Supports almost all languages, including RTL (Arabic and Hebrew) and CJK (Chinese, Japanese and Korean). Supports nested block-level elements (such as P, DIV),
