May 19, 2013

MySQL 5.6 Compatible Percona Toolkit 2.2 Released

March 25, 2013 By 2 Comments

A new Percona Toolkit series has been released: Percona Toolkit 2.2 for MySQL 5.6. Several months in the making and many new features, changes, and improvements make this a great new series. It replaces the 2.1 series for which we plan to do only one more bug fix release (as 2.1.10) then retire. 2.2 is [...]

Filed Under: Percona Software, Percona Toolkit Tagged With: , , , , ,

Why do we care about MySQL Performance at High Concurrency?

February 26, 2013 By 9 Comments

In many MySQL Benchmarks we can see performance compared with rather high level of concurrency. In some cases reaching 4,000 or more concurrent threads which hammer databases as quickly as possible resulting in hundreds or even thousands concurrently active queries. The question is how common is it in production ? The typical metrics to use [...]

Filed Under: Insight for DBAs, MySQL Tagged With: , , ,

Percona and the MariaDB Foundation

December 19, 2012 By 3 Comments

There have been several reports (1,2,3) describing Percona’s stance regarding the MariaDB Foundation that are not totally accurate so I though it would be worth it to describe where we stand on this and related matters. First, let me say the creation of theMariaDB Foundation is a good thing for the MariaDB Community and I’m [...]

Filed Under: MySQL

Webinar for Full Text Search Throwdown

August 21, 2012 By 1 Comment

Tomorrow, August 22 at 10:00am PDT, I’ll present a webinar called Full Text Search Throwdown.  This is a no-nonsense performance comparison of solutions for full text indexing for MySQL applications, including: LIKE predicates and regular expressions MyISAM FULLTEXT indexes InnoDB FULLTEXT indexes Apache Solr Sphinx Search Trigraphs I’ll compare the performance for building indexes and querying [...]

Filed Under: Events and Announcements, Insight for Developers, MySQL Tagged With: , ,

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 [...]

Filed Under: Insight for DBAs, MySQL

Distributed Set Processing with Shard-Query

May 14, 2011 By 27 Comments

Can Shard-Query scale to 20 nodes? Peter asked this question in comments to to my previous Shard-Query benchmark. Actually he asked if it could scale to 50, but testing 20 was all I could due to to EC2 and time limits. I think the results at 20 nodes are very useful to understand the performance: [...]

Filed Under: MySQL

Shard-Query turbo charges Infobright community edition (ICE)

May 6, 2011 By 23 Comments

Shard-Query is an open source tool kit which helps improve the performance of queries against a MySQL database by distributing the work over multiple machines and/or multiple cores. This is similar to the divide and conquer approach that Hive takes in combination with Hadoop. Shard-Query applies a clever approach to parallelism which allows it to [...]

Filed Under: MySQL

EdUIConf 2009 recap

October 2, 2009 By Leave a Comment

I spoke at EdUIConf 2009, a new conference in my hometown of Charlottesville, Virginia. My presentation was on web interface performance; it’s basically a twist on front-end performance in general. I slanted the talk towards web developers, rather than assuming the audience has full control over their Apache configuration. The conference was relatively short — [...]

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Just do the math!

July 6, 2009 By 4 Comments

One of the most typical reasons for performance and scalability problems I encounter is simply failing to do the math. And these are typically bad one because it often leads to implementing architectures which are not up for job they are intended to solve. Let me start with example to make it clear. Lets say [...]

Filed Under: Insight for Developers Tagged With:

Detailed review of Tokutek storage engine

April 28, 2009 By 21 Comments

(Note: Review was done as part of our consulting practice, but is totally independent and fully reflects our opinion) I had a chance to take look TokuDB (the name of the Tokutek storage engine), and run some benchmarks. Tuning of TokuDB is much easier than InnoDB, there only few parameters to change, and actually out-of-box [...]

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