April 20, 2014

How to debug long-running transactions in MySQL

Among the many things that can cause a “server stall” is a long-running transaction. If a transaction remains open for a very long time without committing, and has modified data, then other transactions could block and fail with a lock wait timeout. The problem is, it can be very difficult to find the offending code […]

Percona Launches New Support Option for MySQL

We’ve just announced a new support offering for MySQL. There’s a press release here, and product information page here. But what does this new service really mean for you, in practical terms? This is actually important — it will open up a range of new choices for you. I’ll explain two major points that matter […]

UDF -vs- MySQL Stored Function

Few days ago I was working on a case where we needed to modify a lot of data before pushing it to sphinx – MySQL did not have a function to do the thing so I thought I’ll write MySQL Stored Function and we’ll be good to go. It worked! But not so well really […]

Two Types of MySQL Users

In comments to my previous post I got number number of comments saying if MySQL would not have multiple storage engine interface it would not allow people to do various very cool stuff. And I agree with this. The question is how cool you want your database operation to be ? Visiting customers I see […]

Presentations Announcement: 2010 O’Reilly MySQL Conference & Expo

The Percona team participated at this year’s O’Reilly MySQL Conference & Expo held April 12-15, 2010 in Santa Clara, California. We gave a lot of talks on…

Author: Peter Zaitsev, Justin Swanhart

MySQL Graphing and Trending with Cacti

Author: Baron Schwartz

Percona‘s Performance and Feature Enhancements to MySQL and InnoDB

Author: Bill Schuler, Baron Schwartz…a Bottleneck

Author: Morgan Tocker

XtraBackup Hot Backups and More

Author: Vadim Tkachenko, Morgan Tocker

You can also read more about this conference on Percona site.

Percona sessions at the MySQL conference

Many Percona employees will be at the 2010 MySQL conference. We’ll be giving a lot of informative technical talks on various topics. Here’s a list: Morgan Tocker, Baron Schwartz: Diagnosing and Fixing MySQL Performance Problems Peter Zaitsev: Scaling Applications with Caching, Sharding and Replication Baron Schwartz: EXPLAIN Demystified Vadim Tkachenko: An Overview of Flash Storage […]

Upgrading MySQL

Upgrading MySQL Server is a very interesting task as you can approach it with so much different “depth”. For some this is 15 minutes job for others it is many month projects. Why is that ? Performing MySQL upgrade two things should normally worry you. It is Regressions – functionality regressions when what you’ve been […]

Watch out for your CRON jobs

Resolving extreme database overload for the customer recently I have found about 80 copies of same cron job running hammering the database. This number is rather extreme typically the affect is noticed and fixed well before that but the problem with run away cron jobs is way to frequent. If slow down happens on the […]

Innodb plugin 1.0.4 released – great job Innobase

As you might have seen Innodb Plugin 1.0.4 was released today. I am very excited to see this release which is released exactly 5 months after release of Innodb Plugin 1.0.3 (I honestly expected to see Innodb Plugin 1.0.4 to be released by MySQL Conference and Expo in April). This also is still “early adopter” […]

Looking on 5.4 – IO bound benchmarks

With a lot of talks around 5.4 I decided to check how it works in our benchmarks. For first shoot I took tpcc-like IO-bound benchmark (100W, ~10GB of data, 3GB buffer_pool) and tested it on our Dell PowerEdge R900 box (16 cores, 32GB of RAM, RAID 10 on 8 SAS 2.5″ 15K RPM disks). For […]