Percona is pleased to announce the availability of Percona Toolkit 2.2.14.  Released April 14, 2015. Percona Toolkit is a collection of advanced command-line tools to perform a variety of MySQL server and system tasks that are too difficult or complex for DBAs to perform manually. Percona Toolkit, like all Percona software, is free and open source.

This release is the current GA (Generally Available) stable release in the 2.2 series. It includes multiple bug fixes for pt-table-checksum with better support for Percona XtraDB Cluster, various other fixes, as well as continued preparation for MySQL 5.7 compatibility. Full details are below. Downloads are available  …

MySQL 5.7-RC1 is available now since the last week and you may find a lot about all the new improvement coming from our Team Blog and many other blog posts on this site as well. While in this article I'll just mention that with MySQL 5.7 all scalability limits are going more and more far! -- it's not that we resolved all of them, no, just that we become better and better ;-)

And one of the huge win coming now with MySQL 5.7-RC1 is that for the first time ever we're getting the same performance levels on a single hot table as on several tables used in parallel!

Here is the Max QPS result on the Sysbench RO Point-Select workload with 8-tables running on 40cores-HT server :

And here is the same load, but bombarding only one single table :

Now a full Sysbench OLTP_RO workload on 8-tables :
…

Last week we proudly announced the first Release Candidate (RC) of MySQL 5.7. MySQL 5.7.7 includes additional enhancements and aggregates the Development Milestones Releases (DMRs) the MySQL team at Oracle previously delivered to the MySQL community. With the first Release Candidate, it’s more important than ever that we hear your feedback on the pre-GA version in order to help ensure very high quality for the GA release.

MySQL 5.7 is an extremely exciting new version of the world’s most popular open source database that is …

Download MariaDB 10.1.4 beta

Release Notes Changelog What is MariaDB 10.1?

MariaDB APT and YUM Repository Configuration Generator

The MariaDB project is pleased to announce the immediate availability of MariaDB 10.1.4. This is a Beta release.

See the Release Notes and …

Sometimes trying to keep a post short and to the point raises other questions. Clearly, my Python-MySQL Program post over the weekend did raise a question. They were extending the query example and encountered this error:

      TypeError: range() integer end argument expected, got tuple.

That should be a straight forward error message because of two things. First, the Python built-in range() function manages a range of numbers. Second, the row returned from a cursor is actually a tuple (from relational algebra), and it may contain non-numeric data like strings and dates.

The reader was trying to dynamically navigate the number of columns in a row by using the …

As noted in an earlier post, MySQL Server 5.7 prefers and enables SSL/TLS connections by default.  That’s great and useful progress towards secure connections, but we know that not all SSL/TLS ciphers are created equal – some are older and more vulnerable.  Furthermore, some recent vulnerabilities rely on the ability to negotiate less-secure ciphers during the handshake.  Monitoring which ciphers are used can help identify connections using low-grade ciphers, but also to build an appropriate restricted cipher list.  Using improvements to PERFORMANCE_SCHEMA introduced in 5.7, you can now easily do this – and this post will show you how.

The cipher used for each TLS connection is stored in a …

One of my goals at Acmebenchmarking is make sure I'm running on hardware that is representative of real-world infrastructure, while at the same time doing it as inexpensively as possible.

To date I've been running on two custom built "desktops" (for lack of a better term). Both have an Intel Core i7 4790K processor (quad core plus hyperthreading, 4Ghz), 32GB RAM (dual channel), and a quality SSD. They are named acmebench01 and acmebench02.

Alas, it is time to expand. MUST...PURCHASE...MORE...HARDWARE!

In order to maintain the inexpensive theme I tend to buy used hardware, my goal on this purchase was to achieve many more cores and greater memory bandwidth than my existing machines can provide. Keep in mind that used hardware is great for benchmarking (and likely development and QA environments) but you might want to avoid it for production. For years now I've been purchasing used hardware …

Folks, as usual Pythian is organizing the community dinner. After many years, food, (responsible) drinking and photos, this event has become an important moment for all of us, to know each other better, discuss and have fun.

This year is also the 20th year for MySQL so … YEAAAH let us celebrate, with more food, fun and responsible drinking.

If you had not done it yet … register yourself here: https://www.eventbrite.com/e/the-pythian-mysql-community-pay-your-own-way-dinner-tickets-15692805604

Info about the event:

When: Tuesday April 14, 2015 – 7:00 PM at Pedro’s (You are welcome to show up later, too!)
Where: Pedro’s Restaurant and Cantina – 3935 Freedom Circle, Santa Clara, CA 95054

I know, I know … we …

I’ve started my long journey from Florianópolis, Brazil, to Santa Clara, California and I type this words while waiting for a connection flight. Next Wednesday, Daniel Guzmán Burgos and I will be presenting in the Percona Live MySQL Conference and Expo (PLMCE).

I’m so excited with the new MySQL 101 program that has been added to this year’s event! Along the years I’ve been working as a Support Engineer at Percona I’ve heard two very distinct types of comments amongst others from some people, customers and community in general, about PLMCE:

1) That they went and it was awesome but they found it hard to follow as most of the …

Introduction

One of the primary objectives of MySQL replication is providing an easy failover process i.e. switching to a redundant system if the primary MySQL server fails. In MySQL this translates to switching to the most appropriate slave server in the eventuality of a failure of the master server.

The promotion of a candidate slave to become a new master is based on a lot of factors, undoubtedly the most important factor being that the chosen slave should be most up to date with the primary server (the old master) before we lost it! This blog explains how to use new features in MySQL 5.7.4 and later to make failover easier.

To find the most up to date slave server, a failover script looks at the set of transactions received by the slave and compares it with every other slave to find the one that has received the biggest set of transactions. There could be more sophisticated ways of doing this, for instance you …