May 24, 2013

MySQL 5.5 and MySQL 5.6 default variable values differences

February 21, 2013 By 8 Comments

As the part of analyzing surprising MySQL 5.5 vs MySQL 5.6 performance results I’ve been looking at changes to default variable values. To do that I’ve loaded the values from MySQL 5.5.30 and MySQL 5.6.10 to the different tables and ran the query:

Lets go over to see what are the most important changes [...]

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

Percona MySQL University comes to Toronto on March 22

February 18, 2013 By 2 Comments

Following our events in Raleigh, Montevideo, Buenos Aires, Percona MySQL University comes to Toronto on March 22nd. This is going to our most dense event yet, absolutely packed with information. Even though we have just 1 track we have 12 talks and 11 speakers. We had unique opportunity this time because Percona’s Consulting, Support, RemoteDBA, [...]

Filed Under: Events and Announcements, MySQL, Percona MySQL University Tagged With: , , , , ,

Is MySQL 5.6 slower than MySQL 5.5?

February 18, 2013 By 23 Comments

There have been a number reports/benchmarks showing MySQL 5.6 to be slower than MySQL 5.5 on variety of workloads. There are many possible reasons and I believe we will learn about many of them in the next few weeks and months as MySQL 5.6 is starting to get production battle-tested and there is inflow of [...]

Filed Under: MySQL Tagged With: , , ,

Feature in details: Incremental state transfer after a node crash in Percona XtraDB Cluster

January 31, 2013 By 2 Comments

With our newest release of Percona XtraDB Cluster, I would like to highlight a very nice ability to recovery a node and bring it back to the cluster with an incremental transfer after a crash. This feature was available even in previous release, but now I want to give some details. So, MySQL crashes from [...]

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

How Can Percona MySQL Server Development Services Help ?

January 28, 2013 By 3 Comments

At Percona we offer a number of services. One of them, Custom MySQL Server Development, is commonly the most misunderstood and undervalued. There are a lot of ways Percona custom MySQL server development can help your business be more successful with MySQL. Here are some ways: Bugs – There are Bugs in MySQL, Percona Server, [...]

Filed Under: Insight for DBAs, Insight for Developers, MySQL

Read/Write Splitting with PHP Webinar Questions Followup

January 23, 2013 By 4 Comments

Today I gave a presentation on “Read/Write Splitting with PHP” for Percona Webinars.  If you missed it, you can still register to view the recording and my slides. Thanks to everyone who attended, and especially to folks who asked the great questions.  I answered as many as I could during the session, but here are [...]

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

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 [...]

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

MySQL Wish for 2013 – Better Memory Accounting

December 31, 2012 By 6 Comments

With Performance Schema improvements in MySQL 5.6 I think we’re in the good shape with insight on what is causing performance bottlenecks as well as where CPU resources are spent. (Performance Schema does not accounts CPU usage directly but it is something which can be relatively easily derived from wait and stage information). Where we’re [...]

Filed Under: Insight for DBAs, Insight for Developers, MySQL, Quality Assurance

Announcing Percona Playback 0.5

November 26, 2012 By

Percona is glad to announce the release of Percona Playback 0.5 on November 26th, 2012. Downloads are available from our download site and Percona Software Repositories. Percona Playback is a tool for replaying the load of one database server to another. Currently it can read queries from MySQL query-log and tcpdump files and run them [...]

Filed Under: MySQL

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 [...]

Filed Under: Benchmarks, MySQL
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