The Winter season for conferences is catching up speed.

DOAG

As I write this the DOAG conference in Germany is happening. It is one of the biggest (or the biggest?) Oracle user group conferences outside of USA. Many of my European friends in the MySQL space are talking there. As you know I have been a big fan of Galera Cluster for MySQL for over a year now, but I was perhaps a bit of an early adopter. Lo-and-behold, I was surprised to see the DOAG related press-release from SkySQL puts the creators of Galera first in their headline: Codership, SkySQL und weitere Top-Experten rund um das Thema ‘MySQL Datenbanken” in Nürnberg versammelt. Talk about crossing the chasm! Ralf Gebhardt, my other mentor …

Continuent is proud to sponsor Percona Live MySQL Conference: London 2012!  Don't miss these five (5) talks by our database replication and clustering stars:

Keynote: Future-Proofing MySQL for the World-Wide Data Revolution, by Robert Hodges Why, What, and How of Data Warehouses for MySQL, by Robert Hodges Multi-master, Multi-site MySQL Databases Made Easy with Continuent Tungsten, by Robert

Wednesday, 11/28 @ 10 am PT/ 1 pm ET Register at http://www.percona.com/webinars/industrial-strength-mysql-applications-using-percona-and-continuent

MySQL is the first choice for a large majority of web applications thanks to its ease of use and low cost of operation. However, running big apps on MySQL is still a challenge even for experts. In this webinar we will show you how to combine

Learn tips and tricks from the database replication and clustering stars:

Future-Proofing MySQL for the World-Wide Data Revolution, by Robert Hodges Why, What, and How of Data Warehouses for MySQL, by Robert Hodges Multi-master. Multi-site  MySQL Databases Made Easy with Continuent Tungsten, by Robert Hodges and Giuseppe Maxia MySQL High Availability: Power, Magic and Usability, by Giuseppe

Continuent announced today its expansion in France. In a move to increase its presence in Europe and to strengthen relationships with existing and prospective contacts in France and Benelux, Axel Faux and Ludovic Launer have joined Continuent's team of database clustering and replication experts. The new sales office in Paris, France's largest economic center, is a continuation of Continuent's

Hot backups are important for high availability, they can run without blocking the application. Percona Xtrabackup is a great tool for backing up InnoDB data. 
We have created a backup tool called s9s_backup that makes Xtrabackup really easy to use, and is fully integrated with ClusterControl, which means that you can schedule backups with ease and view the backups that you have taken, and also restore the backups with no pain.

s9s_backup is available in the lastest version of ClusterControl or you can download it here.

Is mysqldump totally useless then?

No. If you would like to isolate and load only one table, mysqldump is great, or if you want to …

It's the time of the year again: You have 2 more weeks to submit a great proposal to the biggest and baddest MySQL Conference: Percona Live MySQL Conference and Expo 2013 (Santa Clara). Like many things in the MySQL community, this conference has also gone through a transformation over the past 3 years. But last year the growing pains and uncertainty ended with Percona putting up a great show. Attendance was up again (over 1000) and there was a sense of energy and excitement for the future of MySQL. If you are like me and like to dwell in nostalgia (so that you can get into the right mood for submitting great proposals) my coverage of last year's conference is found here: part 1, …

If you missed Percona Live MySQL Conference in NYC, download these Continuent Tungsten talks!

FUTURE-PROOFING MYSQL FOR THE WORLD-WIDE DATA REVOLUTION by Robert Hodges SOLVING LARGE-SCALE DATABASE ADMINISTRATION WITH CONTINUENT TUNGSTEN by Robert Hodges and Neil Armitage CONSOLIDATE YOUR SHARDED DATABASE INDEXES IN REAL-TIME by Jeff Mace

We are sponsoring the upcoming Percona Live events in

- Future-Proofing MySQL for the World-Wide Data Revolution by Robert Hodges- Solving Large-Scale Database Administration with Continuent Tungsten by Robert Hodges and Neil Armitage  - MySQL Backup and Recovery Essentials by Ronald Bradford  - Consolidate Your Sharded Database Indexes in Real-time by Jeff Mace   Get 10% discount from your conference pass by using discount code Continuent

So, what impact does enabling the slow query log have on MySQL?

I decided to run some numbers. I’m using my laptop, as we all know the currently most-deployed database servers have mulitple cores, SSDs and many GB of RAM. For the curious: Intel(R) Core(TM) i7-2620M CPU @ 2.70GHz

The benchmark is going to be:
mysqlslap -u root test -S var/tmp/mysqld.1.sock -q 'select 1;' --number-of-queries=1000000 --concurrency=64 --create-schema=test

Which is pretty much “run a whole bunch of nothing, excluding all the overhead of storage engines, optimizer… and focus on logging”.

My first run was going to be with the slow query log on. I’ll start the server with mysql-test-run.pl as it’s just easy:
eatmydata ./mysql-test-run.pl --start-and-exit --mysqld=--slow-query-log --mysqld=--long-query-time=0

The results? It took 18 seconds.

How long without …