October 24, 2014

Special Pass/Hotel Bundled Pricing for Percona Live London

I’m pleased to announce special bundled hotel/conference pass packages for the Percona Live London MySQL Conference which is December 3-4, 2012 at The Millennium Gloucester Conference Centre in London. The conference features tutorials December 3rd and breakout sessions December 4th. A networking reception will follow the Tuesday sessions. Four special, money-saving bundles are available, whether […]

Quality Assurance: Percona Server Development Now Monitored by Automated Sysbench Performance Regression Checks!

Continuous integration of new features and bug fixes is great – but what if a small change in seemingly insignificant code causes a major performance regression in overall server performance? We need to ensure this does not happen. That said, performance regressions can be hard to detect. They may hide for some time (or be […]

Recovering from a bad UPDATE statement

Did you just run an UPDATE against your 10 million row users table without a WHERE clause?  Did you know that in MySQL 5.5 that sometimes you can recover from a bad UPDATE statement?  This is possible if you are running in binlog_format=ROW ! Imagine this scenario:

We run an accidental UPDATE statement that […]

Merit of Private Training

Percona has offered Training for years, and I have personally delivered my share of Public and Private training.  Below are my thoughts on the different training delivery options and how to choose the one that fits your needs. The Onsite Public training is perhaps the most conventional type.  We get people from different people and go over our standard […]

Using pt-table-checksum with Percona XtraDB Cluster

As of Percona Toolkit v2.1.5, pt-table-checksum works correctly with Percona XtraDB Cluster, but it doesn’t work quite like a traditional replication setup because cluster nodes are not like traditional replicas.  In this post I demonstrate how to use pt-table-checksum with Percona XtraDB Cluster. First, you’ll need Percona Toolkit v2.1.5 or newer and Percona XtraDB Cluster 5.5.27-23.6 […]

On SSDs – Lifespans, Health Measurement and RAID

Solid State Drive (SSD) have made it big and have made their way not only in desktop computing but also in mission-critical servers. SSDs have proved to be a break-through in IO performance and leave HDD far far behind in terms of Random IO performance. Random IO is what most of the database administrators would […]

Released: Percona Toolkit 2.1.5

Although Percona Toolkit 2.1.4 was recently released, we soon after found and fixed a couple of bugs concerning how pt-table-checksum works with Percona XtraDB Cluster: pt-table-checksum 2.1.4 doesn’t detect diffs on Percona XtraDB Cluster nodes pt-table-checksum 2.1.4 miscategorizes Percona XtraDB Cluster-based slaves as cluster nodes There was also a bug affecting pt-table-sync –version-check, and the […]

Announcing Percona Server 5.5.27-29.0

Percona is glad to announce the release of Percona Server 5.5.27-29.0 on October 11th, 2012 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.27, including all the bug fixes in it, Percona Server 5.5.27-29.0 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 […]

Call for Papers for the Percona Live MySQL Conference and Expo ends soon!

Call for Papers for the annual Percona Live MySQL Conference and Expo in Santa Clara, are set to close at the end of the day tomorrow Oct. 12th. Please consider submitting one or more speaking proposals. If you are selected to speak you will receive a free full conference pass valued at over $1,500. In […]

MySQL 5.6.7-RC in tpcc-mysql benchmark

MySQL 5.6.7 RC is there, so I decided to test how it performs in tpcc-mysql workload from both performance and stability standpoints. I can’t say that my experience was totally flawless, I bumped into two bugs: MySQL 5.6.7 locks itself on CREATE INDEX MySQL 5.6.7-rc crashed under tpcc-mysql workload But at the end, is not […]