July 31, 2014

Looking out for max values in integer-based columns in MySQL

Yay! My first blog post! As long as at least 1 person finds it useful, I’ve done my job. Recently, one of my long-term clients was noticing that while their INSERTs were succeeding, a particular column counter was not incrementing. A quick investigation determined the column was of type int(11) and they had reached the […]

Analyzing air traffic performance with InfoBright and MonetDB

Accidentally me and Baron played with InfoBright (see http://www.mysqlperformanceblog.com/2009/09/29/quick-comparison-of-myisam-infobright-and-monetdb/) this week. And following Baron’s example I also run the same load against MonetDB. Reading comments to Baron’s post I tied to load the same data to LucidDB, but I was not successful in this. I tried to analyze a bigger dataset and I took public […]

Percona Monitoring Plugins 1.1.4 release

Percona is glad to announce the release of Percona Monitoring Plugins 1.1.4. Changelog: * Added login-path support to Nagios plugins with MySQL client 5.6 (bug 1338549) * Added a new threshold option for delayed slaves to pmp-check-mysql-replication-delay (bug 1318280) * Added delayed slave support to pmp-check-mysql-replication-running (bug 1332082) * Updated Nagios plugins and Cacti script […]

Percona Toolkit 2.2.9 is now available

Percona is glad to announce the release of Percona Toolkit 2.2.9 on July 10, 2014 (downloads are available here and from the Percona Software Repositories). This release is the current GA (Generally Available) stable release in the 2.2 series. Bugs Fixed: Fixed bug 1335960: pt-query-digest could not parse the binlogs from MySQL 5.6 because the binlog format was changed. […]

Why did we develop percona-agent in Go?

We recently open-sourced our percona-agent and if you check out the source code, you’ll find that it is written in the Go programming language (aka Golang). For those not up to speed, the percona-agent is a real-time client-side agent for Percona Cloud Tools. Our requirements are quite demanding for our agents. This one is software that works […]

Percona Monitoring Plugins 1.1.1 release (enterprise-grade MySQL monitoring and graphing)

Percona announces the release of Percona Monitoring Plugins 1.1.1 to address the critical bug that appears after the 1.1 upgrade. Changelog: * Cacti mysql graphs stop working with data input field “server-id” after 1.1 upgrade (bug 1264814) * Non-integer poller errors for MySQL Query Response Time (bug 1264353) A new tarball is available from downloads […]

Automatic replication relaying in Galera 3.x (available with PXC 5.6)

A decade ago MySQL folks were in love with the concept of a relay slave for MySQL high availability across data centers.  A relay is a single slave in a remote data center that receives replication from the global master and, in turn, replicates to all the other local slaves in that data center.  This saved […]

InnoDB Full-text Search in MySQL 5.6: Part 2, The Queries!

This is part 2 in a 3 part series. In part 1, we took a quick look at some initial configuration of InnoDB full-text search and discovered a little bit of quirky behavior; here, we are going to run some queries and compare the result sets. Our hope is that the one of two things […]

Analyzing Slow Query Table in MySQL 5.6

Next week I’m teaching an online Percona Training class, called Analyzing SQL Queries with Percona Toolkit.  This is a guided tour of best practices for pt-query-digest, the best tool for evaluating where your database response time is being spent. This month we saw the GA release of MySQL 5.6, and I wanted to check if any […]

Common MySQL traps webinar questions followup

Thanks to all attendees of the webinar yesterday! If you missed it, you can watch the video recording. Here are some questions that remained unanswered due to time constraints. Q: Are there any technical considerations or best practice tips to have a replicated slave in the cloud, for example on Amazon AWS? Hardware resources are […]