We are running internally a lot of benchmarks on our recently announced Percona XtraDB Cluster, and I am going to publish these results soon. But before that I wanted to mention that proper benchmark of distributed system comes with a lot of challenges. I am saying that not to complain, but to make sure, if [...]
MariaDB 5.3 is released as GA!
March 5, 2012 By 17 Comments
Congratulations to Monty Program and the many community contributors for releasing the GA version of MariaDB 5.3. We were in our annual all-staff meeting last week, so we are a little slow to blog about this and acknowledge the great work that has gone into MariaDB. Better late than never, I hope. Before I discuss [...]
Percona Server vs MySQL on Intel 320 SSD
February 23, 2012 By 21 Comments
If you are terrified by the stability of the results in MySQL in my previous post, I am going to show what we can get with Percona Server. This is also to address the results presented there Benchmarking MariaDB-5.3.4
My talks on PL MySQL Conference (+free book inside)
February 14, 2012 By Leave a Comment
On coming PL MySQL conference 2012 I will give one tutorial: Percona XtraBackup: install, usage, tricks. This tutorial I will do in joint with Alexey Kopytov, the lead developer of Percona XtraBackup. Our intent is to provide the comprehensive overview of the XtraBackup architecture and features, and we will touch future roadmap. This is all [...]
Last chance for a discount on Percona Live DC!
January 3, 2012 By Leave a Comment
In just over a week, we’ll be running a Percona Live MySQL conference in the nation’s capital, in a beautiful modern conference facility that has its own Metro rail stop. And for a limited time, you can save 20% with this discount code: PerLiveDC. If you’re in the DC area and you use MySQL, this [...]
kernel_mutex problem. Or double throughput with single variable
December 2, 2011 By 17 Comments
Problem with kernel_mutex in MySQL 5.1 and MySQL 5.5 is known: Bug report. In fact in MySQL 5.6 there are some fixes that suppose to provide a solution, but MySQL 5.6 yet has long way ahead before production, and it is also not clear if the problem is really fixed. Meantime the problem with kernel_mutex [...]
Side load may massively impact your MySQL Performance
November 13, 2011 By 7 Comments
When we’re looking at benchmarks we typically run some stable workload and we run it in isolation – nothing else is happening on the system. This is not however how things happen in real world when we have significant variance in the load and many things can be happening concurrently. It is very typical to [...]
MySQL data via a NoSQL solution, Free ticket to Percona Live London
September 9, 2011 By Leave a Comment
The much-anticipated ability to access MySQL data via a NoSQL solution has been realized. Using HandlerSocket, significant performance gains can be realized for certain workloads. Sound like something you are interested in? Join us for Percona Live London to hear Ryan Lowe, Percona’s Director of American Consulting speak on this subject. In Ryan’s session he [...]
Return of the Query Cache, win a Percona Live ticket
August 26, 2011 By 4 Comments
It’s Friday again, and time for another TGIF give-away of a Percona Live London ticket! But first, what’s new with the MySQL query cache? You may know that it still has the same fundamental architecture that it’s always had, and that this can cause scalability problems and locking, but there have been some important changes [...]
How Innodb Contention may manifest itself
July 28, 2011 By 1 Comment
Even though multiple fixes have been implemented in Percona Server and MySQL 5.5, there are still workloads in which case mutex (or rw-lock) contention is a performance limiting factor, helped by ever growing number of cores available in the systems. It is interesting though the contention may manifest itself in the different form from the [...]
