Raid1+0 stripe size for MySQL InnoDB
MySQL InnoDB使用 Raid 1+0 stripe size 大小该如何配置？ By: 谭俊青@MySQL实验室 要理解Raid 1+0，我们首先要先理解Raid 0，看下图： 左图为 4kb stripe size；右图为 64kb stripe size 存储文件大小：红色:4kiB，蓝色:20kiB，绿色:100kiB，紫色:500kiB Ra
MySQL InnoDB使用 Raid 1+0 stripe size 大小该如何配置？
By: 谭俊青@MySQL实验室
要理解Raid 1+0，我们首先要先理解Raid 0，看下图：
左图为 4kb stripe size；右图为 64kb stripe size
存储文件大小：红色:4kiB，蓝色:20kiB，绿色:100kiB，紫色:500kiB
Raid 0 准确的来说应该称 AID 0
大家可以看到，如果stripe size设置过大，在单线程的情况下起不到提速作用。而设置过小又会产生多次IO操作。因此我们通过简化模型，将大部分请求的文件块大小（IO_SIZE）除以RAID0 的磁盘数量（DISK_NUM）来估算stripe size大小（stripe size＝IO_SIZE / DISK_NUM）。
比如MySQL InnoDB，假设平时大部分请求文件块的大小为1M（16kb＊64）,那么在8块盘组成的Raid1＋0的情况下stripe size＝1024kb / 4 = 256kb。这时候将Raid的条带大小配置为256kb是比较合适的。MyISAM存储引擎使用情况相对复杂。
实际上管理和磁盘定位等还有一定开销，更为主要的是不同的业务，请求的文件块大小相差很大，所以在实际环境中很难一刀切说多大的stripe size最佳，因此在估算之后可以上下浮动评测，选择适合自己系统的最优大小的stripe size。
顺便今天在MySQL实验室的2个群里调查了下，stripe size大小为64kb、256kb基本各占50％。
－－ －－－－－－－－－－－－－
SDO：测试下8块及以上盘阵 strip size 256k最佳
点评网：256k
畅游：512k 综合效果更好 （来源评论）
继续统计更新…
Related posts:
- InnoDB Plugin 1.0.4 for MySQL 5.1.37
- InnoDB plugin 1.0.7
- NoSQL到MySQL+Memcache(d)重树MySQL王者地位
- MySQL5.5与MySQL5.1 性能(比较)对比测试
- MySQL Cluster致命缺点
? 谭俊青 发布在 MySQL性能、MySQL Cluster集群、MySQL HA高可用等研究 - MySQL实验室, 2011.
可以任意转载, 但转载时务必以超链接形式标明文章原始出处 和 作者信息。
链接: http://www.mysqlab.net/blog/2011/12/raid10-stripe-size-for-mysql-innodb/
标签: Raid, stripe size
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
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
PHP's big data structure processing skills
May 08, 2024 am 10:24 AM
Big data structure processing skills: Chunking: Break down the data set and process it in chunks to reduce memory consumption. Generator: Generate data items one by one without loading the entire data set, suitable for unlimited data sets. Streaming: Read files or query results line by line, suitable for large files or remote data. External storage: For very large data sets, store the data in a database or NoSQL.
How to optimize MySQL query performance in PHP?
Jun 03, 2024 pm 08:11 PM
MySQL query performance can be optimized by building indexes that reduce lookup time from linear complexity to logarithmic complexity. Use PreparedStatements to prevent SQL injection and improve query performance. Limit query results and reduce the amount of data processed by the server. Optimize join queries, including using appropriate join types, creating indexes, and considering using subqueries. Analyze queries to identify bottlenecks; use caching to reduce database load; optimize PHP code to minimize overhead.
How to use MySQL backup and restore in PHP?
Jun 03, 2024 pm 12:19 PM
Backing up and restoring a MySQL database in PHP can be achieved by following these steps: Back up the database: Use the mysqldump command to dump the database into a SQL file. Restore database: Use the mysql command to restore the database from SQL files.
How to insert data into a MySQL table using PHP?
Jun 02, 2024 pm 02:26 PM
How to insert data into MySQL table? Connect to the database: Use mysqli to establish a connection to the database. Prepare the SQL query: Write an INSERT statement to specify the columns and values to be inserted. Execute query: Use the query() method to execute the insertion query. If successful, a confirmation message will be output.
How to fix mysql_native_password not loaded errors on MySQL 8.4
Dec 09, 2024 am 11:42 AM
One of the major changes introduced in MySQL 8.4 (the latest LTS release as of 2024) is that the "MySQL Native Password" plugin is no longer enabled by default. Further, MySQL 9.0 removes this plugin completely. This change affects PHP and other app
How to use MySQL stored procedures in PHP?
Jun 02, 2024 pm 02:13 PM
To use MySQL stored procedures in PHP: Use PDO or the MySQLi extension to connect to a MySQL database. Prepare the statement to call the stored procedure. Execute the stored procedure. Process the result set (if the stored procedure returns results). Close the database connection.
How to create a MySQL table using PHP?
Jun 04, 2024 pm 01:57 PM
Creating a MySQL table using PHP requires the following steps: Connect to the database. Create the database if it does not exist. Select a database. Create table. Execute the query. Close the connection.
The difference between oracle database and mysql
May 10, 2024 am 01:54 AM
Oracle database and MySQL are both databases based on the relational model, but Oracle is superior in terms of compatibility, scalability, data types and security; while MySQL focuses on speed and flexibility and is more suitable for small to medium-sized data sets. . ① Oracle provides a wide range of data types, ② provides advanced security features, ③ is suitable for enterprise-level applications; ① MySQL supports NoSQL data types, ② has fewer security measures, and ③ is suitable for small to medium-sized applications.
