http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/ Percona's MySQL & InnoDB performance and scalability blog Sat, 11 Feb 2012 16:45:54 +0000 hourly 1 http://wordpress.org/?v=3.2.1 http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/comment-page-1/#comment-816169 Tomas Fri, 26 Aug 2011 11:40:20 +0000 http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/#comment-816169 I would love to see/do some tests related to 3variables changing in some predefined way. sort_buffer_size max_length_for_sort_data read_rnd_buffer_size it looks to me that by changing those 3 variables one would be able to tune it in way that - short data to be sorted will use just sort_buffer_size - while longer rows will also use read_rnd_... which might be set higher and the way to change when the data/row is short or long is by max_length_for_sort_data I would love to see/do some tests related to 3variables changing in some predefined way.
sort_buffer_size
max_length_for_sort_data
read_rnd_buffer_size
it looks to me that by changing those 3 variables one would be able to tune it in way that
- short data to be sorted will use just sort_buffer_size
- while longer rows will also use read_rnd_… which might be set higher
and the way to change when the data/row is short or long is by max_length_for_sort_data

]]> http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/comment-page-1/#comment-527315 根据status信息对MySQL服务器进行优化[转超群] - I'm stone www.wunengwu.cn Thu, 02 Apr 2009 02:36:26 +0000 http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/#comment-527315 [...] 另外，增加read_rnd_buffer_size(3.2.3是record_rnd_buffer_size)的值对排序的操作也有一点的好处，参见：http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/ [...] [...] 另外，增加read_rnd_buffer_size(3.2.3是record_rnd_buffer_size)的值对排序的操作也有一点的好处，参见：http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/ [...]

]]> http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/comment-page-1/#comment-518209 根据status信息对MySQL服务器进行优化（二） » 超群.com的博客 Wed, 25 Mar 2009 07:08:56 +0000 http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/#comment-518209 [...] 另外，增加read_rnd_buffer_size(3.2.3是record_rnd_buffer_size)的值对排序的操作也有一点的好处，参见：http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/ [...] [...] 另外，增加read_rnd_buffer_size(3.2.3是record_rnd_buffer_size)的值对排序的操作也有一点的好处，参见：http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/ [...]

]]> http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/comment-page-1/#comment-447037 Project 2061 Techlog » Best Practices for Setting MySQL Server Runtime Parameters Fri, 16 Jan 2009 16:18:43 +0000 http://www.mysqlperformanceblog.com/2007/07/24/what-exactly-is-read_rnd_buffer_size/#comment-447037 [...] MySQL Performance Blog: What exactly is read_rnd_buffer_size? [...] [...] MySQL Performance Blog: What exactly is read_rnd_buffer_size? [...]

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