Bug #47489 Sample configuration file erroneous comment
Submitted: 21 Sep 2009 15:51 Modified: 21 Sep 2009 16:37
Reporter: Paul Dubois Email Updates:
Status: Verified Impact on me:
None 
Category:MySQL Server: General Severity:S3 (Non-critical)
Version:5.4 OS:Any
Assigned to: Assigned Account CPU Architecture:Any
Triage: Triaged: D4 (Minor)

[21 Sep 2009 15:51] Paul Dubois
Description:
Bug#44470 fixed the support-files/my-innodb-heavy-4G.cnf.sh sample
configuration file to use innodb_{read,write}_io_threads instead
of innodb_file_io_threads, as follows:

# Number of IO threads to use for async IO operations. This value is
# hardcoded to 8 on Unix, but on Windows disk I/O may benefit from a
# larger number.
innodb_write_io_threads = 8
innodb_read_io_threads = 8

However, the comment is now in error because the value is no longer
hardcoded on Unix and the benefit may no longer be limited only to
Windows.  The comment should be corrected.

Another issue is that this part of the file sets both variables to
the Summit defaults of 8. Perhaps it should use the InnoDB Plugin
defaults of 4. (This is not necessarily a bug, I am just point it
out because the Summit and Plugin defaults differ.)

How to repeat:
By inspection.
[21 Sep 2009 16:37] Valeriy Kravchuk
Thank you for the problem report. Verified by code review.