Monthly Archives - March 2012

BOFs and Lightning Talks Announced for Percona Live MySQL Conference & Expo

The Percona Live MySQL Conference & Expo is going to be awesome! Great speakers, an A-list of sponsors, countless opportunities to engage with the community, and an enthusiastic crowd of MySQL users ensure this is going to be a great event. The conference features 72 breakout sessions, keynotes by leading industry luminaries, an optional […]

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Multi Range Read (MRR) in MySQL 5.6 and MariaDB 5.5

This is the second blog post in the series of blog posts leading up to the talk comparing the optimizer enhancements in MySQL 5.6 and MariaDB 5.5. This blog post is aimed at the optimizer enhancement Multi Range Read (MRR). Its available in both MySQL 5.6 and MariaDB 5.5
Now let’s take a look at […]

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Troubleshooting MySQL Memory Usage

One of the most painful troubleshooting tasks with MySQL is troubleshooting memory usage. The problem usually starts like this – you have configured MySQL to use reasonable global buffers, such as
innodb_buffer_size, key_buffer_size etc, you have reasonable amount of connections but yet MySQL takes much more memory than you would expect, causing swapping or other […]

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Win Free MySQL Conference Tickets!

Tokutek and Percona are giving away free tickets to the Percona Live MySQL Conference and Expo (worth $995 each), and you can win them! We’re also giving away copies of High Performance MySQL, 3rd Edition (worth $55 each).
This year’s event is the best ever, with a better lineup of talks and speakers than ever before.  It’s […]

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Announcing Percona Server 5.5.21-25.0

Percona is glad to announce the release of Percona Server 5.5.21-25.0 on March 20th, 2012. Downloads are available here and from the Percona Software Repositories.
Based on MySQL 5.5.21, including all the bug fixes in it, Percona Server 5.5.21-25.0 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 can […]

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Free ticket to MySQL User Conference on SF Meetup with talk “Percona XtraDB Cluster”

Just a reminder that I will be giving a talk “Percona XtraDB Cluster” on coming San Francisco MySQL Meetup, next Wednesday, March-21, 2012. Along with talk I will give away one full ticket (tutorials + sessions + expo hall) to Percona Live MySQL User Conference 2012 and three copies our new book “High Performance […]

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ext4 vs xfs on SSD

As ext4 is a standard de facto filesystem for many modern Linux system, I am getting a lot of question if this is good for SSD, or something else (i.e. xfs) should be used.
Traditionally our recommendation is xfs, and it comes to known problem in ext3, where IO gets serialized per i_node in O_DIRECT […]

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Give feedback on a pt-online-schema-change update

I am writing a specification for updating pt-online-schema-change. The outline of the changes I want to make is here: https://www.percona.com/docs/wiki/ptdev:blueprints:redesign-pt-online-schema-change
The idea is to make the tool Do The Right Thing, with features such as automatically throttling its operation to avoid causing replicas to lag. Many of the features and improvements are similar to those […]

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