MySQL Cluster analysis for

This is an automated analysis of the database for migration into MySQL Cluster. No warranty is made to the accuracy of the information.

This information should be valid for MySQL 4.1 and 5.0. Since 5.1 is not a final release yet, the numbers should be used as a guide only.

5.1-dd is for tables stored on disk. The ndb_size.pl estimates are experimental and should not be trusted. Notably we don't take into account indexed columns being in DataMemory versus non-indexed on disk.

Parameter Settings

NOTE the configuration parameters below do not take into account system tables and other requirements.

Parameter

Memory usage because of parameters

Usage is in kilobytes. Actual usage will vary as you should set the parameters larger than those listed in the table above.

Parameter

Table List

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Column	Type	VARSIZE	Size	Key	NDB Size
		YES

Indexes

We assume that indexes are ORDERED (not created USING HASH). If order is not required, 10 bytes of data memory can be saved per row if the index is created USING HASH

Index	Type	Columns	IdxMem	DatMem

DataMemory Usage


Nr Varsized Attributes
Row Overhead
Varsized Overhead
Column DataMemory/Row
Index DataMemory/Row
Total DataMemory/Row
Rows per 32kb page
Current number of rows
Total DataMemory (kb)

IndexMemory Usage


IndexMemory/Row
Rows per 8kb page
Current number of rows
Total IndexMemory (kb)

This is the output of ndb_size.pl.