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 13:49	Modified:	11 Dec 2003 17:26
Reporter:	Paul DuBois	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server	Severity:	S3 (Non-critical)
Version:	Any	OS:	Any (Any)
Assigned to:	Dmitry Lenev	CPU Architecture:	Any

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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Additional info:

Will be included in the upcoming 4.0.17.