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NDB_SIZE.PL(1)			      MySQL Database System			   NDB_SIZE.PL(1)

NAME
       ndb_size.pl - NDBCLUSTER Size Requirement Estimator

SYNOPSIS
       ndb_size.pl arguments

DESCRIPTION
       This is a Perl script that can be used to estimate the amount of space that would be
       required by a MySQL database if it were converted to use the NDBCLUSTER storage engine.
       Unlike the other utilities discussed in this section, it does not require access to a
       MySQL Cluster (in fact, there is no reason for it to do so). However, it does need to
       access the MySQL server on which the database to be tested resides.
	       Requirements

       o   A running MySQL server. The server instance does not have to provide support for MySQL
	   Cluster.

       o   A working installation of Perl.

       o   The DBI module, which can be obtained from CPAN if it is not already part of your Perl
	   installation. (Many Linux and other operating system distributions provide their own
	   packages for this library.)

       o   A MySQL user account having the necessary privileges. If you do not wish to use an
	   existing account, then creating one using GRANT USAGE ON db_name.*--where db_name is
	   the name of the database to be examined--is sufficient for this purpose.

       ndb_size.pl can also be found in the MySQL sources in storage/ndb/tools.

       The following table includes options that are specific to the MySQL Cluster program
       ndb_size.pl. Additional descriptions follow the table. For options common to most MySQL
       Cluster programs (including ndb_size.pl), see Options Common to MySQL Cluster Programs(1).

       Table 17.27. ndb_size.pl Options and Variables: MySQL Cluster NDB 7.2
       +--------------------------------+--------------------------+-----------------------+
       |Format				| Description		   | Added / Removed	   |
       +--------------------------------+--------------------------+-----------------------+
       |				| The database or	   |			   |
       |       --database=dbname	| databases to examine;    |	    All MySQL 5.5  |
       |				| accepts a		   |	    based releases |
       |				| comma-delimited list;    |			   |
       |				|	      the default  |			   |
       |				| is ALL (use all	   |			   |
       |				| databases found on the   |			   |
       |				| server)		   |			   |
       +--------------------------------+--------------------------+-----------------------+
       |				| Specify host and	   |			   |
       |       --hostname[:port]	| optional port as	   |	    All MySQL 5.5  |
       |				| host[:port]		   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Specify a socket to	   |			   |
       |       --socket=file		| connect to		   |	    All MySQL 5.5  |
       |				|			   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Specify a MySQL user	   |			   |
       |       --user=string		| name			   |	    All MySQL 5.5  |
       |				|			   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Specify a MySQL user	   |			   |
       |       --password=string	| password		   |	    All MySQL 5.5  |
       |				|			   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Set output format (text  |			   |
       |       --format=string		| or HTML)		   |	    All MySQL 5.5  |
       |				|			   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Skip any tables in a	   |			   |
       |       --excludetables=tbl_list | comma-separated list of  |	    All MySQL 5.5  |
       |				| tables		   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Skip any databases in a  |			   |
       |       --excludedbs=db_list	| comma-separated list of  |	    All MySQL 5.5  |
       |				| databases		   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Saves all queries to the |			   |
       |       --savequeries=file	| database into the file   |	    All MySQL 5.5  |
       |				| specified		   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
       |				| Loads all queries from   |			   |
       |       --loadqueries=file	| the file specified; does |	    All MySQL 5.5  |
       |				| not connect to a	   |	    based releases |
       |				|	      database	   |			   |
       +--------------------------------+--------------------------+-----------------------+
       |				| Designates a table to    |			   |
       |       --real_table_name=table	| handle unique index size |	    All MySQL 5.5  |
       |				| calculations		   |	    based releases |
       +--------------------------------+--------------------------+-----------------------+
	       Usage

	   perl ndb_size.pl [--database={db_name|ALL}] [--hostname=host[:port]] [--socket=socket] \
		 [--user=user] [--password=password]  \
		 [--help|-h] [--format={html|text}] \
		 [--loadqueries=file_name] [--savequeries=file_name]

       By default, this utility attempts to analyze all databases on the server. You can specify
       a single database using the --database option; the default behavior can be made explicit
       by using ALL for the name of the database. You can also exclude one or more databases by
       using the --excludedbs option with a comma-separated list of the names of the databases to
       be skipped. Similarly, you can cause specific tables to be skipped by listing their names,
       separated by commas, following the optional --excludetables option. A host name can be
       specified using --hostname; the default is localhost. In MySQL Cluster NDB 7.2.6 and
       later, you can specify a port in addition to the host using host:port format for the value
       of --hostname. The default port number is 3306. If necessary, you can also specify a
       socket; the default is /var/lib/mysql.sock. A MySQL user name and password can be
       specified the corresponding options shown. It also possible to control the format of the
       output using the --format option; this can take either of the values html or text, with
       text being the default. An example of the text output is shown here:

	   shell> ndb_size.pl --database=test --socket=/tmp/mysql.sock
	   ndb_size.pl report for database: 'test' (1 tables)
	   --------------------------------------------------
	   Connected to: DBI:mysql:host=localhost;mysql_socket=/tmp/mysql.sock
	   Including information for versions: 4.1, 5.0, 5.1
	   test.t1
	   -------
	   DataMemory for Columns (* means varsized DataMemory):
		    Column Name 	   Type  Varsized   Key  4.1  5.0   5.1
		HIDDEN_NDB_PKEY 	 bigint 	    PRI    8	8     8
			     c2     varchar(50) 	Y	  52   52    4*
			     c1 	int(11) 		   4	4     4
								  --   --    --
	   Fixed Size Columns DM/Row				  64   64    12
	      Varsize Columns DM/Row				   0	0     4
	   DataMemory for Indexes:
	      Index Name		 Type	     4.1	5.0	   5.1
		 PRIMARY		BTREE	      16	 16	    16
						      --	 --	    --
		  Total Index DM/Row		      16	 16	    16
	   IndexMemory for Indexes:
			  Index Name	    4.1        5.0	  5.1
			     PRIMARY	     33 	16	   16
					     -- 	--	   --
		      Indexes IM/Row	     33 	16	   16
	   Summary (for THIS table):
					    4.1        5.0	  5.1
	       Fixed Overhead DM/Row	     12 	12	   16
		      NULL Bytes/Row	      4 	 4	    4
		      DataMemory/Row	     96 	96	   48
			       (Includes overhead, bitmap and indexes)
	     Varsize Overhead DM/Row	      0 	 0	    8
	      Varsize NULL Bytes/Row	      0 	 0	    4
		  Avg Varside DM/Row	      0 	 0	   16
			    No. Rows	      0 	 0	    0
		   Rows/32kb DM Page	    340        340	  680
	   Fixedsize DataMemory (KB)	      0 	 0	    0
	   Rows/32kb Varsize DM Page	      0 	 0	 2040
	     Varsize DataMemory (KB)	      0 	 0	    0
		    Rows/8kb IM Page	    248        512	  512
		    IndexMemory (KB)	      0 	 0	    0
	   Parameter Minimum Requirements
	   ------------------------------
	   * indicates greater than default
			   Parameter	 Default	4.1	    5.0 	5.1
		     DataMemory (KB)	   81920	  0	      0 	  0
		  NoOfOrderedIndexes	     128	  1	      1 	  1
			  NoOfTables	     128	  1	      1 	  1
		    IndexMemory (KB)	   18432	  0	      0 	  0
	       NoOfUniqueHashIndexes	      64	  0	      0 	  0
		      NoOfAttributes	    1000	  3	      3 	  3
			NoOfTriggers	     768	  5	      5 	  5

       For debugging purposes, the Perl arrays containing the queries run by this script can be
       read from the file specified using can be saved to a file using --savequeries; a file
       containing such arrays to be read in during script execution can be specified using
       --loadqueries. Neither of these options has a default value.

       To produce output in HTML format, use the --format option and redirect the output to a
       file, as shown here:

	   shell> ndb_size.pl --database=test --socket=/tmp/mysql.sock --format=html > ndb_size.html

       (Without the redirection, the output is sent to stdout.)

       The output from this script includes the following information:

       o   Minimum values for the DataMemory, IndexMemory, MaxNoOfTables, MaxNoOfAttributes,
	   MaxNoOfOrderedIndexes, MaxNoOfUniqueHashIndexes, and MaxNoOfTriggers configuration
	   parameters required to accommodate the tables analyzed.

       o   Memory requirements for all of the tables, attributes, ordered indexes, and unique
	   hash indexes defined in the database.

       o   The IndexMemory and DataMemory required per table and table row.

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				   NDB_SIZE.PL(1)
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