Speed up ORDERBY query _ MySQL

Accelerate ORDERBY query speed bitsCN.com

Speed up order by Query

To increase the order by speed, you must first check whether MySQL can use indexes instead of additional sorting procedures. If you cannot use an index, follow these policies:

Increase the value of sort_buffer_size.

Increase the value of read_rnd_buffer_size.

Modify tmpdir to point to a dedicated file system with a lot of available space. If you use MySQL 4.1 or update, this option allows multiple paths to use the loop format.

Each path is separated by a colon (':') on Unix, and a semicolon (';') on Windows, NetWare, and OS/2 (';').

This feature can be used to evenly distribute loads to several directories. Note: these paths must be directories distributed on different physical disks, rather than different directories on the same physical disk.

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