So far most of the benchmarks posted about MySQL 5.6 use the sysbench OLTP workload. I wanted to test a set of queries which, unlike sysbench, utilize joins. I also wanted an easily reproducible set of data which is more rich than the simple sysbench table. The Star Schema Benchmark (SSB) seems ideal for this. [...]
MySQL performance: Impact of memory allocators (Part 2)
March 8, 2013 By 12 Comments
Last time I wrote about memory allocators and how they can affect MySQL performance in general. This time I would like to explore this topic from a bit different angle: What impact does the number of processor cores have on different memory allocators and what difference we will see in MySQL performance in this scenario? [...]
Announcing Percona Server for MySQL 5.5.30-30.1
March 7, 2013 By Leave a Comment
Percona is glad to announce the release of Percona Server for MySQL 5.5.30-30.1 on March 7, 2013 (Downloads are available here and from the Percona Software Repositories). Based on MySQL 5.5.30, including all the bug fixes in it, Percona Server 5.5.30-30.1 is now the current stable release in the 5.5 series. All of Percona‘s software is open-source and free, all the details of [...]
Percona Server on the Nexus 7: Your own MySQL Database Server on an Android Tablet
February 28, 2013 By 11 Comments
Following Roel’s post, Percona Server on the Raspberry Pi: Your own MySQL Database Server , I thought what other crazy gadget can I run Percona Server on? And having an Asus Nexus 7 Android tablet I decided to give it a try. Anything below contains a risk that you break your tablet if you do [...]
Is there room for more MySQL IO Optimization?
January 3, 2013 By 11 Comments
I prefer to run MySQL with innodb_flush_method=O_DIRECT in most cases – it makes sure there is no overhead of double buffering and I can save the limited amount of file system cache I would normally have on database server for those things which need to be cached — system files, binary log, FRM files, MySQL [...]
Auditing login attempts in MySQL
December 28, 2012 By 4 Comments
This is a recurrent question made by our MySQL Support customers: How can I audit the login attempts in MySQL? Logging all the attempts or just the failed ones is a very important task on some scenarios. Unfortunately there are not too many audit capabilities in MySQL Community so the first option to audit MySQL’s [...]
The Optimization That (Often) Isn’t: Index Merge Intersection
December 14, 2012 By 6 Comments
Prior to version 5.0, MySQL could only use one index per table in a given query without any exceptions; folks that didn’t understand this limitation would often have tables with lots of single-column indexes on columns which commonly appeared in their WHERE clauses, and they’d wonder why the EXPLAIN plan for a given SELECT would [...]
What CPU Architecture do you prefer for running MySQL In production
November 24, 2012 By 13 Comments
Time for another poll! I wonder What CPU Architecture do you use for running MySQL in Production ? I guess most of the game here is between Intel and AMD x86-64 variants though I wonder if there is still a lot of use for others in the wild. If I am missing some Architecture which [...]
Speaking at Percona Live London 2012: Choosing Hardware for MySQL
November 19, 2012 By 4 Comments
Another Percona Live event is coming up, this time in London on the 3rd and 4th of December. I’m sure it is going to be as awesome as it was last year. This year, I will talk about ‘Choosing Hardware For MySQL‘. Of course, the most important hardware components will be covered: CPU, Memory, Network, [...]
MySQL 5.6.7-RC in tpcc-mysql benchmark
October 8, 2012 By 21 Comments
MySQL 5.6.7 RC is there, so I decided to test how it performs in tpcc-mysql workload from both performance and stability standpoints. I can’t say that my experience was totally flawless, I bumped into two bugs: MySQL 5.6.7 locks itself on CREATE INDEX MySQL 5.6.7-rc crashed under tpcc-mysql workload But at the end, is not [...]
