…MySQL has implemented priority connection scheduling for the Thread Pool. (Alexey Kopytov) Percona Server for MySQL…better scalability in InnoDB high-concurrent workloads. Bugs fixed …MySQL 5.5.30-30.2 are available in our online documentation. Bugs can be reported on the launchpad bug tracker. UPDATE…
Post: Percona Server 5.5.30-30.2 rerelease fixes non-restart issue
April 24, 2013 By Leave a Comment
…completed regardless of its state before updating. This caused some problems for some…MySQL has implemented priority connection scheduling for the Thread Pool. (Alexey Kopytov) Percona Server for MySQL… provides much better scalability in InnoDB high-concurrent workloads. Bugs fixed #1131189 (Alexey…
Post: MySQL Configuration Wizard Updated
January 26, 2012 By 5 Comments
…ve released an updated version of the MySQL Configuration Wizard we announced at the end of last year…. our servers, whose cnf’s were put together by highly trained mysql certified dba’s. So what’s changed in… you, and so on. I have selected the next priorities, but I don’t want to spoil the surprise …
Post: SELECT LOCK IN SHARE MODE and FOR UPDATE
August 6, 2006 By 51 Comments
… comparing locking hints in MySQL and SQL Server. In MySQL/Innodb LOCK IN SHARE MODE and SELECT FOR UPDATE are more than hints…; – A lot of shared locks on Innodb table but no updates. Supporting MySQL hints “HIGH_PRIORITY” and “LOW_PRIORITY” would probably be good start.
Post: MySQL Upgrade Webinar Questions Followup
June 28, 2012 By 7 Comments
… get to former execution plan either by updating statistics (ANALYZE TABLE) or disabling some of …to upgrade from MySQL 5.5 to Percona Server 5.5 Compatibility is our highest priority with Percona… database binary incompatible with MySQL. Our focus on compatibility is indeed so high there are number …
Post: Using MyISAM in production
June 17, 2006 By 36 Comments
… one is enough. Lock priorities. By default MySQL treats updates as higher priority operations. You can use SELECT HIGH_PRIORITY or UPDATE LOW_PRIORITY to adjust that or you can simply set low_priority_updates…
Comment: More on MySQL Error Messages
April 6, 2011 By 9 Comments
… problem in Mysql replication on Slave Server. Probelm:: Last_SQL_Error: Could not execute Update_rows event on table cbs.airtel_high_priority_sms_que; Can’t find record in ‘airtel_high_priority_sms_que’, Error…
Post: High-Performance Click Analysis with MySQL
December 22, 2008 By 13 Comments
… we hear is how to build high-performance systems to do this work…. to save work. Avoid operations that update huge chunks of aggregated data at …a cost-benefit equation. What are your priorities? Choose the solution that meets them. … either using MySQL 5.1′s row-based replication, or in MySQL 5.0 and…
Post: Knowing what pt-online-schema-change will do
November 1, 2012 By 1 Comment
… `pt_osc_test_t_upd` AFTER UPDATE ON `test`.`t` FOR EACH ROW…is a dry run. INSERT LOW_PRIORITY IGNORE INTO `test`.`_t_new` (`id`, `… chunk boundary*/ The SQL statements will vary highly depending on the table, the number…in the tool, problems with the MySQL server (privileges, etc.), or other oddities…
