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Special Forums UNIX and Linux Applications MySQL optimization or why the server is worsened Post 302808877 by radoulov on Friday 17th of May 2013 04:28:40 PM
Old 05-17-2013
Sorry, I don't have quick solutions for what I see in your files.
There are many select statements in state: locked ... Your biggest problem seems to be the storage engine - you're using MyISAM.
You should consider switching to InnoDB, but you should test the migration thoroughly. And you should upgrade to a newer version, 5.1 is may too old.

I suppose your best bet now is to activate the slow log (if I recall correctly, it's dynamic in 5.1) and try to tune your queries, to minimize the locking issue.

By the way, why you're using 2G for the InnoDB buffer pool and only 128M for your MyISAM key buffer? Do you have InnoDB tables
(not mentioned in the uploaded files)?
 

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MYSQL_CONVERT_TAB(1)					       MySQL Database System					      MYSQL_CONVERT_TAB(1)

NAME
mysql_convert_table_format - convert tables to use a given storage engine SYNOPSIS
mysql_convert_table_format [options] db_name DESCRIPTION
mysql_convert_table_format converts the tables in a database to use a particular storage engine (MyISAM by default). mysql_convert_table_format is written in Perl and requires that the DBI and DBD::mysql Perl modules be installed (see Section 2.13, "Perl Installation Notes"). Invoke mysql_convert_table_format like this: shell> mysql_convert_table_format [options]db_name The db_name argument indicates the database containing the tables to be converted. mysql_convert_table_format supports the options described in the following list. o --help Display a help message and exit. o --force Continue even if errors occur. o --host=host_name Connect to the MySQL server on the given host. o --password=password The password to use when connecting to the server. Note that the password value is not optional for this option, unlike for other MySQL programs. Specifying a password on the command line should be considered insecure. See Section 6.1.2.1, "End-User Guidelines for Password Security". You can use an option file to avoid giving the password on the command line. o --port=port_num The TCP/IP port number to use for the connection. o --socket=path For connections to localhost, the Unix socket file to use. o --type=engine_name Specify the storage engine that the tables should be converted to use. The default is MyISAM if this option is not given. o --user=user_name The MySQL user name to use when connecting to the server. o --verbose Verbose mode. Print more information about what the program does. o --version Display version information and exit. COPYRIGHT
Copyright (C) 1997, 2014, Oracle and/or its affiliates. All rights reserved. This documentation is free software; you can redistribute it and/or modify it only under the terms of the GNU General Public License as published by the Free Software Foundation; version 2 of the License. This documentation is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with the program; if not, write to the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA or see http://www.gnu.org/licenses/. SEE ALSO
For more information, please refer to the MySQL Reference Manual, which may already be installed locally and which is also available online at http://dev.mysql.com/doc/. AUTHOR
Oracle Corporation (http://dev.mysql.com/). MySQL 5.5 01/30/2014 MYSQL_CONVERT_TAB(1)
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