Comments on: MySQLTuner Revision 19 is available http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/ Words of wisdom from a server administrator Mon, 21 May 2012 12:07:17 +0000 hourly 1 http://wordpress.org/?v=3.3.2 By: major http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-75 major Thu, 18 Oct 2007 20:31:01 +0000 http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-75 I use the 85% threshold as I've found it to be a good average for most shared hosting environments. However, if the server is a dedicated MySQL server, the threshold could be increased to 90 or 95% of system memory. For servers running web applications that use a lot of memory, like Java or Ruby on Rails, the threshold may need to be lowered to allow for better stability of the whole system. I use the 85% threshold as I've found it to be a good average for most shared hosting environments. However, if the server is a dedicated MySQL server, the threshold could be increased to 90 or 95% of system memory. For servers running web applications that use a lot of memory, like Java or Ruby on Rails, the threshold may need to be lowered to allow for better stability of the whole system.

]]> By: dwellman http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-74 dwellman Thu, 18 Oct 2007 20:23:47 +0000 http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-74 This script is handy for a quick check on the health of a mysql instance. I modified the script to skip suggesting turning on concurrent inserts for SMP systems. Also I added a check to determine whether the innodb buffer and the innodb aditional memory pool ((nnodb buffer / 20) + whatever to get divisible by 16). I am curious why the 85% threshold for MySQL memory usage? This script is handy for a quick check on the health of a mysql instance. I modified the script to skip suggesting turning on concurrent inserts for SMP systems. Also I added a check to determine whether the innodb buffer and the innodb aditional memory pool ((nnodb buffer / 20) + whatever to get divisible by 16).

I am curious why the 85% threshold for MySQL memory usage?

]]> By: major http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-73 major Wed, 17 Oct 2007 00:06:32 +0000 http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-73 I'm glad you like it! :-) Let me know if you have any suggestions for updates. I'm glad you like it! :-) Let me know if you have any suggestions for updates.

]]> By: brocknoland http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-70 brocknoland Tue, 16 Oct 2007 18:25:18 +0000 http://rackerhacker.com/2007/10/15/mysqltuner-revision-19-is-available/#comment-70 Thanks, this is awesome! Thanks, this is awesome!

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