…use it for web site performance analyzes. As… have different performance profile. mysql> select count(*) …count(*) fatal from performance_log_080523; +———+——————+——–+——–+——–+ | cnt | avw | soso | poor | fatal |… set performance goals for high percentage portion such…
Post: ORDER BY ... LIMIT Performance Optimization
September 1, 2006 By 93 Comments
… LIMIT is often the cause of MySQL Performance problems. Here is what you …data sets being sorted. On many web sites you will fine top tags, recently …high end custom search solutions can be developed, but if we stick to simple MySQL… can be found in slow query log or by examining Hander statistics). …
Post: Implementing efficient counters with MySQL
July 1, 2007 By 16 Comments
…it can be rather expensive from performance point of view. The nasty …view counter. For smaller single system web site with no caching the overhead may … of updates may be very high and ask for optimization. Thinking …+ another mysql instance (or simply the database which is not replicated) to log …
Post: Is disk Everything for MySQL Performance ?
April 25, 2008 By 7 Comments
…MySQL UC2008 Scalability Panel ? Indeed disks MAY be the most important part in your system performance… of data in. Many Web 2.0 sites in particular design for… high in memory fit. For large number of applications optimizing IO performance… files (and whole datadir) and log files on the same partition…
Post: Is it query which needs to be optimized ?
March 6, 2007 By 9 Comments
… lot of questions at MySQL Performance Forum as well as …SELECT COUNT(*) cnt, page FROM log GROUP BY page ORDER BY…of this type in many web applications which do group … browsing at social networking site – SELECT COUNT(*) FROM profiles … overload server. Also watch high limit values and “post filtering…
