I presented a webinar today about SQL Injection, to try to clear up some of the misconceptions that many other blogs and articles have about this security risk. You can register for the webinar even now that I’ve presented it, and you’ll be emailed a link to the recording, which will be available soon. During [...]
MySQL Configuration Wizard Updated
January 26, 2012 By 5 Comments
We’ve released an updated version of the MySQL Configuration Wizard we announced at the end of last year. If you don’t remember that announcement, here’s the short version: this is a tool to help you generate my.cnf files based on your server’s hardware and other characteristics. We’ve gotten really good feedback on this tool, including [...]
How to use tcpdump on very busy hosts
April 18, 2011 By 17 Comments
Often I run into problems when trying to use mk-query-digest with tcpdump on “very” busy hosts. You might be thinking, “very busy is a relative and unquantifiable term,” and you’d be right, so I’ll phrase this differently. Let me give a little background to the problem first. Mk-query-digest tries to handle dropped or missing packets [...]
Announcing Percona Training Workshops for InnoDB and XtraDB
August 4, 2009 By 11 Comments
Today, we are announcing that we’re ready to offer training for InnoDB and XtraDB in Santa Clara and San Francisco. The course was developed by Morgan Tocker with input from all our team – and covers a lot of the performance problems we run through in our consulting practice. The Details: 14th Sept – Santa [...]
Gathering queries from a server with Maatkit and tcpdump
July 1, 2009 By 23 Comments
For the last couple of months, we’ve been quietly developing a MySQL protocol parser for Maatkit. It isn’t an implementation of the protocol: it’s an observer of the protocol. This lets us gather queries from servers that don’t have a slow query log enabled, at very high time resolution. With this new functionality, it becomes [...]
Friday challenge: ibd recovery
May 15, 2009 By 8 Comments
I want to make this Friday a bit more interesting – how do you feel to train a bit in InnoDB data recovery techniques. I have .ibd datafile which was created by query CREATE TABLE `tryme` ( `email` mediumblob, `content` mediumblob ) ENGINE=InnoDB … (SOME PARAMETERS SKIPPED) …; and I inserted one record into this [...]
How Percona Develops Open-Source Software
January 9, 2009 By 4 Comments
Percona has been building and contributing to open-source software since the company was founded, and individually we’ve been doing the same thing for many years. We think it’s a huge value for our customers and the community. We’re involved in a dozen or so open-source projects, but our three core efforts at the moment are [...]
How Percona does a MySQL Performance Audit
November 24, 2008 By 17 Comments
Our customers or prospective customers often ask us how we do a performance audit (it’s our most popular service). I thought I should write a blog post that will both answer their question, so I can just reply “read all about it at this URL” and share our methodology with readers a little bit. This [...]
Site was down today, support and web hosting.
August 31, 2007 By 27 Comments
During last one and a half year we had pretty good track record with MySQL Performance Blog – there were times when site was slow (especially when backup was running) but I do not remember significant downtime, until today we went down for few hours. All this time the site was running on dedicated server [...]
Top 5 Wishes for MySQL
June 29, 2007 By 10 Comments
About a week ago Marten send me email pointing to his article published on Jays Blog (Come on Marten, it is time for you to get your own blog). I should have replied much earlier but only found time to do that now. So here is my list 1. Be Pluggable Unlike many OpenSource projects [...]
