July 25, 2014

InnoDB Full-text Search in MySQL 5.6: Part 3, Performance

This is part 3 of a 3 part series covering the new InnoDB full-text search features in MySQL 5.6. To catch up on the previous parts, see part 1 or part 2 Some of you may recall a few months ago that I promised a third part in my InnoDB full-text search (FTS) series, in […]

Let’s talk about Percona Server 5.6: Enterprise Grade MySQL (webinar)

The new Percona Server 5.6 is the most manageable, highest performance, and most scalable version of MySQL available. Percona Server 5.6 is the best open source MySQL choice for enterprise-grade applications because it combines new features with the best features of Percona Server 5.5 and MySQL 5.6 to provide unparalleled performance. Join me tomorrow as […]

Why it’s beneficial to attend MySQL conferences

In the MySQL ecosystem, there is some sort of conference or another all year long. But why are they important? To answer this, we can split the audience into 3 groups: – MySQL Professionnals – MySQL Community Members – MySQL (Future?) Users Depending on which category you are in, you can have different expectations about […]

Your troubles are over, pt-heartbeat 2.1

Poor pt-heartbeat 2.1: it was perfectly fine through Percona Toolkit 2.1.7, but it’s had a rough life since. Its troubles are finally over as of Percona Toolkit 2.1.10. At a conference recently, a user joked to me that “Percona Toolkit is awesome, but you really broke pt-heartbeat.” It’s true, and if you haven’t heard or […]

Checking B+tree leaf nodes list consistency in InnoDB

If we have InnoDB pages there are two ways to learn how many records they contain: PAGE_N_RECS field in the page header Count records while walking over the list of records from infimum to supremum In some previous revision of the recovery tool a short summary was added to a dump which is produced by […]

Percona Monitoring Plugins 1.0.4 release: Now with Galera graphs

Percona is glad to announce the release of Percona Monitoring Plugins 1.0.4. The components are designed to integrate seamlessly with widely deployed solutions such as Nagios and Cacti, and are delivered in the form of templates, plugins, and scripts. Changelog: * Added Galera/MySQL Monitoring Template for Cacti * Added “Disk Read/Write Time per IO Request […]

Growth of Percona software releases

It was once said that “real artists ship.” In looking over the history of Percona software releases, we are currently shipping more software than ever before. First, let’s look at Percona Server. Let’s look at all major versions: 5.1, 5.5 and 5.6 as well as the total for each year. The estimate for 2013 comes […]

Another reason why SQL_SLAVE_SKIP_COUNTER is bad in MySQL

It is everywhere in the world of MySQL that if your replication is broken because an event caused a duplicate key or a row was not found and it cannot be updated or deleted, then you can use ‘ STOP SLAVE; SET GLOBAL SQL_SLAVE_SKIP_COUNTER=1; START SLAVE; ‘ and be done with it. In some cases this is fine and you can repair the […]

What kind of queries are bad for MySQL?

In writing a recommendation for our Web development team on how to use MySQL, I came up with the following list, which I want to share: What kind of queries are bad for MySQL? Any query is bad. Send a query only if you must. (Hint: use caching like memcache or redis) Queries that examine […]

Percona Toolkit 2.1.10 is now available

Percona is glad to announce the release of Percona Toolkit 2.1.10 on July 18th, 2013 (Downloads are available here). Bugs Fixed: Unfortunately, the relatively new –utc option for pt-heart was still broken because “MySQL interprets date as a value in the current time zone and converts it to an internal value in UTC.” Now the tool works […]