October 1, 2014

How Percona tested Percona Server 5.6: A world premiere in advanced testing

8PM. One of the servers found a critical bug. Hop online and discuss, log bug. 10PM. Patch ready. 10:30PM. New build ready. 10:45PM. New RQG run initiated. This was by no means an uncommon sight during the months of testing that went into Percona Server 5.6, in fact it was commonplace. At a certain point, […]

QA: Advanced Option Combinatorics (Pairwise Testing): Combinatorial mysqld Option Test Case Generation

How do we ensure that, when we have 35+ testable option combinations for mysqld, we test each and every combination of them? For example: will a different innodb_log_file_size combined with more innodb_log_files_in_group and a modified innodb_fast_shutdown setting truly not affect Percona’s log archiving feature? Most option-related bugs are caused by the setting of 1 or […]

Using per-query variable statements in Percona Server

Percona Server has implemented per-query variable statement support in version 5.6.14-62.0. This feature provides the ability to set variable values only for a certain query, after execution of which the previous values will be restored. Per-query variable values can be set up with the following command:

Example: If we want to increase the sort_buffer_size […]

Percona Playback 0.7 is now available

Percona is glad to announce the release of Percona Playback 0.7 for MySQL on October 22nd, 2013. Downloads are available from our download site and Percona Software Repositories. Percona Playback for MySQL is a tool for replaying the load of one database server to another. Currently it can read queries from MySQL query-log and MySQL […]

Percona Server 5.1.71-14.9 is now available!

Percona is glad to announce the release of Percona Server 5.1.71-14.9 on August 27th, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.1.71, including all the bug fixes in it, Percona Server 5.1.71-14.9 is now the current stable release in the 5.1 series. All of Percona‘s software is open-source and free, all the details of the release […]

Percona Server 5.5.33-31.1 is now available

Percona is glad to announce the release of Percona Server 5.5.33-31.1 on August 27th, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.33, including all the bug fixes in it, Percona Server 5.5.33-31.1 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of the release […]

Percona Server for MySQL 5.5.31-30.3 now available

Percona is glad to announce the release of Percona Server for MySQL 5.5.31-30.3 on May 24, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.31, including all the bug fixes in it, Percona Server 5.5.31-30.3 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of […]

Is your MySQL buffer pool warm? Make it sweat!

Today’s blog post diving into the waters of the MySQL buffer pool is a cross-post from Groupon’s engineering blog, and is Part 1 of 2. Thank you to Kyle Oppenheim at Groupon for contributing to this project and post. We’ll be posting Part 2 on Thursday. I’ll be at the Percona Live MySQL Conference and […]

Percona Playback 0.6 for MySQL now available

Percona is glad to announce the release of Percona Playback 0.6 for MySQL on April 9, 2013. Downloads are available from our download site and Percona Software Repositories. Percona Playback for MySQL is a tool for replaying the load of one database server to another. Currently it can read queries from MySQL query-log and MySQL […]

Announcing Percona Server for MySQL 5.6.10-60.2

Percona is glad to announce the release of Percona Server for MySQL 5.6.10-60.2 on March 14, 2013.  (Downloads are available here and from the experimental Percona Software Repositories). Based on MySQL 5.6.10, including all the bug fixes in it, Percona Server 5.6.10-60.2 is the third ALPHA release in the Percona Server 5.6 series. All of Percona‘s software is open-source and free, all the […]