… the Star Schema Benchmark. In my previous blog post I compared MySQL 5.5.30 to MySQL 5.6.10, both with default… almost always performs better, at least for this workload. Notes MySQL version used: 5.6.11, custom compiled to remove performance… [mysqld] datadir=/mnt/mysql56/data basedir=/usr/local/mysql socket=/var/lib/mysql/mysql.sock user=justin innodb_buffer_pool_size=64G innodb…
Post: MySQL Query Patterns, Optimized - Webinar questions followup
June 3, 2013 By 2 Comments
On Friday I gave a presentation on “MySQL Query Patterns, Optimized” for Percona MySQL Webinars. If you missed it, you can still… queries. The query optimizer analyzes queries for common patterns the MySQL designers know can be improved. But there’s a finite…-12, 2013. We also look forward to the Percona Live MySQL Conference and Expo in Santa Clara, California starting March 31…
Post: Replication in MySQL 5.6: GTIDs benefits and limitations - Part 2
May 30, 2013 By 6 Comments
… slave; # For s1, s3 and s4 mysql> stop slave; mysql> change master to master_port=10002; mysql> start slave; Those of you who… try! # For s0,s1, s3, s4 mysql> stop slave; mysql> change master to master_port=10002; mysql> start slave; # And then check the…. This can even be made easier with mysqlfailover from the MySQL Utilities (this will be the topic of a future post…
Comment: Percona XtraBackup 2.1.3 for MySQL available for download
May 30, 2013 By 3 Comments
… mysqld_safe mysqld from pid file /var/lib/mysql/srv-d2-mysql02.pid ended in an another environment I have three nodes…
Post: How to fix your PRM cluster when upgrading to RHEL/CentOS 6.4
May 29, 2013 By 2 Comments
…: ms_MySQL [p_mysql] (unmanaged) p_mysql:0 (ocf::percona:mysql): Master percona2 (unmanaged) p_mysql:1 (ocf::percona:mysql): Started percona3 (unmanaged) Stopped: [ p_mysql:2..._MySQL [p_mysql] (unmanaged) p_mysql:0 (ocf::percona:mysql): Master percona1 (unmanaged) p_mysql:1 (ocf::percona:mysql): Slave percona2 (unmanaged) p_mysql:2 (ocf::percona:mysql…
Post: Choosing a MySQL HA Solution - MySQL Webinar: June 5
May 28, 2013 By 1 Comment
… UTC), I will be presenting a webinar entitled, Choosing a MySQL HA Solution, in which we’ll explore the topic of…. We will then explore some of the more well-known MySQL HA tools and technologies available today (largely grouped into those which use traditional MySQL replication, those which use some other MySQL-level replication, and those which replicate at…
Comment: How to calculate a good InnoDB log file size
May 21, 2013 By 38 Comments
…/lib/mysql/ib_logfile* -rw-rw—- 1 mysql mysql 536870912 May 21 22:23 /var/lib/mysql/ib_logfile0 -rw-rw—- 1 mysql mysql 536870912 May 21 22:23 /var/lib/mysql/ib… InnoDB: https://blogs.oracle.com/mysqlinnodb/entry/innodb_recovery_is_now_faster And from the manual: http://dev.mysql.com/doc/refman…
Post: Replication in MySQL 5.6: GTIDs benefits and limitations - Part 1
May 21, 2013 By 8 Comments
… not on slave #2: # slave #1 mysql> change master to master_auto_position = 1; mysql> start slave; and let’s create a… STATUS? Look at the last field, Auto_Position: # Slave #1 mysql> show slave status\G [...] Auto_Position: 1 -> GTID-based positioning # Slave #2 mysql> show slave status\G [...] Auto_Position: 0 -> File-based positioning Conclusion…
Comment: Performance Schema overhead
June 12, 2013 By 22 Comments
Great test and report Vadim! I think the performance schema will be a great addition to MySQL once it’s more established. Just starting with MySQL after retiring from handling oracle databases – now volunteering 
Thanks for sharing.
Comment: Converting Character Sets
June 12, 2013 By 22 Comments
… correct. There was no truncation: MEDIUMTEXT is bigger than TEXT. MySQL does this to make sure there’s *no* truncation, as explained in the manual – http://dev.mysql.com/doc/refman/5.1/en/alter-table.html “For…
