MySQL Bugs: #1952: SHOW TABLE STATUS very slow w/large number of tables

Bug #1952	SHOW TABLE STATUS very slow w/large number of tables
Submitted:	25 Nov 2003 14:49	Modified:	11 Dec 2003 18:26
Reporter:	Paul DuBois
Status:	Closed
Category:	Server	Severity:	S3 (Non-critical)
Version:	Any	OS:	Any (Any)
Assigned to:	Dmitri Lenev	Target Version:

Description:
Create 20,000 or so MyISAM tables, then try to do SHOW TABLE STATUS
for one of them. Even with a literal table name, the statement will be
very slow to return.

Monty indicates that:

the problem is that the code that read file names allocates blocks in small increments
and does in 
this case have to do a LOT of realloc calls

How to repeat:
See above.

Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.

If necessary, you can access the source repository and build the latest
available version, including the bugfix, yourself. More information 
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    http://www.mysql.com/doc/en/Installing_source_tree.html

Additional info:

Will be included in the upcoming 4.0.17.