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Percona Server 5.6.25-73.0 is now available

Percona is glad to announce the release of Percona Server 5.6.25-73.0 on July 1, 2015. Download the latest version from the Percona web site or from the Percona Software Repositories. Based on MySQL 5.6.25, including all the bug fixes in it, Percona Server 5.6.25-73.0 is the current GA release in the Percona Server 5.6 series. Percona Server is open-source […]

Practical MySQL Performance Optimization (July 2 webinar)

Applications often become impacted by MySQL performance. Optimization is the obvious solution but where to start? Join me on July 2 at 11 a.m. Pacific and I’ll show you how to optimize MySQL in a practical way – spending time on what gives you the best return. Many of you have heard me talk on […]

Tips for avoiding malware from a lesson learned

In a recent article on the Percona blog, I recommended readers to a tool called CamStudio for making technical screen recordings. The blog post was very popular and got 300+ Facebook likes in a short time. Providentially though, a reader commented that the installer (as downloaded from the project website) installed “pretty annoying adware on […]

Oracle license revenue and the MySQL ecosystem

Oracle was in the news recently with the story of its license revenue declining as much as 17% in the recent quarter. This is blamed on transitioning to the cloud in some publications, but others, such as Bloomberg and TechRepublic, look deeper, seeing open source software responsible for the bulk of it. Things are especially […]

Percona Monitoring Plugins 1.1.5 release

Percona is glad to announce the release of Percona Monitoring Plugins 1.1.5. Changelog: Added more DB instance classes to pmp-check-aws-rds.py (issue 1398911) Added configurable query period and average time to pmp-check-aws-rds.py (issue 1436943) Added region support to pmp-check-aws-rds.py (issue 1442980) Added an option to alert when server is not configured as replica to pmp-check-mysql-replication-delay (issue […]

Getting EXPLAIN information from already running queries in MySQL 5.7

When a new version of MySQL is about to be released we read a lot of blog posts about the performance and scalability improvements. That’s good but sometimes we miss some small features that can help us a lot in our day-to-day tasks. One good example is the blog post that Aurimas wrote about a […]

Update on the InnoDB double-write buffer and EXT4 transactions

In a post, written a few months ago, I found that using EXT4 transactions with the “data=journal” mount option, improves the write performance significantly, by 55%, without putting data at risk. Many people commented on the post mentioning they were not able to reproduce the results and thus, I decided to further investigate in order […]

Percona XtraDB Cluster: Quorum and Availability of the cluster

Percona XtraDB Cluster (PXC) has become a popular option to provide high availability for MySQL servers. However many people are still having a hard time understanding what will happen to the cluster when one or several nodes leave the cluster (gracefully or ungracefully). This is what we will clarify in this post. Nodes leaving gracefully […]