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high-performance MySQL tuning script

High-performance MySQL tuning script written in perl that will provide you with a snapshot of a MySQL server?s health. Based on the statistics gathered, specific recommendations will be provided that will increase a MySQL server's efficiency and performance. The script gives you automated MySQL tuning that is on the level of what you would receive from a MySQL DBA.


* Memory Usage: Calculates MySQL memory usage at max load and makes recommendations for increasing or decreasing the MySQL memory footprint. Per-thread and server-wide buffer data is calculated separately for an accurate snapshot of the server?s configuration. * Slow Queries: Reviews the amount of slow queries relative to the total queries. Slow query time limits are also analyzed and recommendations are made. * Connections: Current and historical connection counts are reviewed. * Key Buffer: Takes configuration data and compares it to the actual indexes found in MyISAM tables. Key cache hit rates are calculated and variable adjustments are suggested. * Query Cache: Query cache hit rates and usage percentages are used to make recommendations for the query cache configuration variables. * Sorting & Joins: Per-thread buffers that affect sorts and joins are reviewed along with the statistics from the queries run against the server. * Temporary Tables: Variable recommendations are made to reduce temporary tables that are written to the disk. * Table Cache: Compares total tables opened to the currently open tables. Calculates the table cache hit rate in order to make suggestions. * Open Files: Determines if the server will approach or run into the open file limit set by the operating system or the MySQL server itself. * Table Locks: Finds table locking that forces queries to wait and makes suggestions for reducing locks that require a wait. * Thread Cache: Calculates how many times MySQL must create a new thread to respond to a query. * Aborted Connections: Finds applications that are not closing connections to MySQL properly. * Read/Write Ratios: Calculates the percentage of read and write operations on your MySQL installation.

Package version:1.1.0


mysqltuner(1)                                          mysqltuner(1)

       mysqltuner - high-performance MySQL tuning script

       mysqltuner [ option ]

       High-performance  MySQL tuning script that will provide you a
       MySQL server's health. Based on the statistics gathered, spe‐
       cific  recommendations  will be provided that will increase a


mysqltuner (1.1.0) unstable; urgency=low

  * New release (Closes: #497639)

 -- Marcela Tiznado <>  Sun, 15 Nov 2009 23:59:46 -0300

mysqltuner (0.9.0) unstable; urgency=low

  * New release
  * Colours fixed by new release (Closes: #470588)
  * Removed debian/watch
  * Updated manpage

 -- Marcela Tiznado <>  Sun, 25 May 2008 03:11:25 -0300

mysqltuner (0.1rev29-1) un


This package was debianized by Marcela Tiznado <> on
Sat, 22 Dec 2007 03:48:59 -0300.

It was downloaded from  

Upstream Author: 

   Major Hayden <>


    Copyright (C) 2007 Major Hayden


The Debian packaging is (C) 2007, Marcela Tiznado <> and
is licensed under the GPL, see `/usr/share/common

Browse inside mysqltuner_1.1.0_all.deb

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