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I am speaking at MySQL Connect 2013
I open this blog to announce that I will be speaking at MySQL Connect in 2 weeks. I will present a conference session : 50 Tips for Boosting MySQL Performance [CON2655], Saturday 21 Sept, 1PM and a...
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MySQL Connect slides
Thank you for attending MySQL Connect 2013. The Saturday session 50 Tips for Boosting MySQL Performance [CON2655] was sold out. It shows the interest in practical recipes to solve performance problems....
View ArticlePoor man’s Online Optimize in 5.6
Table space fragmentation has generally 2 origins : File System fragmentation : the data file is spread physically on many non contiguous locations on the disk. Internal Fragmentation : the data and...
View ArticleA small optimizer change worth noticing
MySQL uses internal temporary tables to execute some queries. Usually the tables are stored in memory and on disk if some conditions are met : Some conditions prevent the use of an in-memory temporary...
View ArticleHow to calculate a specific InnoDB index size ?
MySQL provides commands to see the overall index size versus the data size. One of them is “show table status” :mysql> show table status like 't'\G *************************** 1. row...
View Article50 tips to boost MySQL Performance Webinar follow up
Thank you for attending the webinar ! Here are the ppt slides. If you missed it, you can still join the archived event by clicking the URL below....
View ArticlePerformance_schema success stories : host summary tables
This question was asked at support by a customer to solve a difficult issue. How to identify a sporadic burst of queries coming from one of the hosts accessing the database ? If there are hundreds of...
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Performance_schema success stories : replication SQL thread tuning
A lot of customers have lagging slaves. It could be one of the top issues at support, due to the infamous row based replication without primary key issue : Bug #53375 RBR + no PK => High load on...
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