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Tmpfs with IO_Direct
bad idea.. tmpdir.. ..on tmpfs upgrade.. ..to 5.5 default engine.. ..innodb create.. ..temp tables statements optimizing my.cnf... ..io_direct sounds good.. tmpfs.. ..and io_direct do not.. ..play well...
View ArticleIntroduction to Tungsten Enterprise 1.5 – MySQL high availability from a...
Webcast: Thursday 3/1/12 @ 10 am PT/ 1 pm ETWebcast: Tuesday 3/6/12 @ 15:00 CET/14:00 GMTLearn how the next version of Tungsten Enterprise will help you push the envelope in multi-master, multi-site...
View ArticleHow to Monitor MySQL with Percona’s Nagios Plugins
In this post, I’ll cover the new MySQL monitoring plugins we created for Nagios, and explain their features and intended purpose. I want to add a little context. What problem were we trying to solve...
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MySQL features i forgot about #1 : slave_compressed_protocol
It is probably about time to re-read the MySQL manual end-to-end as i more and more find myself discovering features i either completely forgot about or which i never was aware of in the first place...
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Benchmarks of Intel 320 SSD 600GB
I have a chance to test a system with Intel 320 SSD drives (NewRelic provided me with an access to the server), and compare performance with SAS hard drives. System specification Dell PowerEdge R610...
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Some fun with R visualization
My previous post I finished with the graph with unstable results. There I won’t analyze causes, but rather I want to show some different ways to present results. I enjoy working with R, and though I am...
View ArticleCLIENT_LONG_PASSWORD
Today a little history lesson. I was on a quest to find the origin of this line in include/mysql_com.h: #define CLIENT_LONG_PASSWORD 1 /* new more secure passwords */ "new" ? "more secure" ? These...
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Percona Server vs MySQL on Intel 320 SSD
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...
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Deploy MySQL Cluster 7.2 GA in 288 seconds
It seems that our friends at Oracle have been pretty busy with the GA release of MySQL Cluster 7.2.This is not just old wine in new bottles.While it may be a dot release, it does appear to be a more...
View ArticleBlack-Box MySQL Performance Analysis with TCP Traffic
For about the past year I’ve been formulating a series of tools and practices that can provide deep insight into system performance simply by looking at TCP packet headers, and when they arrive and...
View ArticleBlack-Box Performance Analysis with TCP Traffic
This is a cross-post from the MySQL Performance Blog. I thought it would be interesting to users of PostgreSQL, Redis, Memcached, and $system-of-interest as well. For about the past year I’ve been...
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Creating sequences in MySQL
Those who have used PostgresSQL usually gets lazy when write the SQL code to auto-numeric fields, but we miss that feature when we are in a MySQL database. As we know, MySQL have auto-increment fields,...
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Multi-Insert and LAST_INSERT_ID()
Using a multi-insert to save rounds trips to the database can be a great time saver, but what if you want to also retrieve all the auto-increment values from those rows you just inserted?CREATE TABLE...
View ArticlePercona XtraDB Cluster 5.5.20 – Beta release
I am happy to announce the availability of beta release of our new product Percona XtraDB Cluster. Percona XtraDB Cluster is High Availability and Scalability solution for MySQL Users and the beta...
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Recommendation: Vagrant and Veewee
Quoting from Vagrant’s web site:Vagrant is a tool for building and distributing virtualized development environments. By providing automated creation and provisioning of virtual machines using Oracle’s...
View ArticleLog Buffer #260, A Carnival of the Vanities for DBAs
Nothing pleases the technology bloggers more than the moment when somebody thank them for a helpful blog entry. That is one of the many awesome advantages of the technology blogs. In database arena,...
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SQLyog 9.61 Released – Now with Option for Chinese Interface
Changes (as compared to 9.6) include: Features: * A Chinese (Simplified) translation is now included. Bug fixes: * When there was an INFO tab open the server was unnecessarily queried for the content...
View ArticlePercona XtraDB Cluster Events
We are on our way to delivery a production ready release of Percona XtraDB Cluster by the end March-2012. We will do couple events to cover features and architecture of XtraDB Cluster. I will give a...
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PHP UK 2012
The PHP UK 2012 has started and the three meetings rooms are packed. The show continues on Saturday the 25th where you cam catch me talking about the latest changes in MySQL at 1400, Johannes Schluter...
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