Search Results for: where can i go

Moving to MySQL 5.6? We can help

If you are looking for a class that is designed to jump-start your knowledge on MySQL 5.6 features, a class that provides hands-on labs, and a class that shows various migration methods – look no further. We have been hard at work building a new class to ensure you have the knowledge and skills needed to verify […]

MySQL Workshops: Chicago & London this April

Percona will be in Chicago and London the week of April 8th delivering two 2-day MySQL workshops. For our MPB readers, we are offering a 15% discount. Just use MPB15A when purchasing your tickets to one or both MySQL workshops. Scaling and Optimization for MySQL on Monday & Tuesday, April 8 & 9 This MySQL workshop […]

Can’t Create Thread: Errno 11 (A Tale of Two Ulimits)

Recently some of my fellow Perconians and I have noticed a bit of an uptick in customer cases featuring the following error message:

The canonical solution to this issue, if you do a bit of Googling, is to increase the number of processes / threads available to the MySQL user, typically by adding a […]

Full table scan vs full index scan performance

Earlier this week, Cédric blogged about how easy we can get confused between a covering index and a full index scan in the EXPLAIN output. While a covering index (seen with EXPLAIN as Extra: Using index) is a very interesting performance optimization, a full index scan (type: index) is according to the documentation the 2nd […]

European and North American Training Schedule Announced

Ensuring that everyone has a chance to attend Percona’s training for MySQL, we are announcing the following dates for Europe. You can always find the current schedule at Percona Training. The dates for Europe are: Live Virtual Training: Developer Training for MySQL Begins Monday, August 27, 2012 , 9am – 11am, Greenwich Mean Time Madrid, España Begins Monday, […]

Where Percona software goes before it’s released

Where does software go while it’s waiting for release? The answer is: our experimental repository! For anywhere from a few days to a week before we release them, we stage our software releases in the TESTING download area and in separate software repositories for Debian/Ubuntu and CentOS/RHEL. This is so that we can co-ordinate things such […]

read_buffer_size can break your replication

There are some variables that can affect the replication behavior and sometimes cause some big troubles. In this post I’m going to talk about read_buffer_size and how this variable together with max_allowed_packet can break your replication. The setup is a master-master replication with the following values: max_allowed_packet = 32M read_buffer_size = 100M To break the […]