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Percona XtraBackup: Open Source Alternative for InnoDB Hot Backup call for ideas

 | February 24, 2009 |  Posted In: Percona Software

For long time as main backup solution for MySQL on Linux we have been using LVM snapshots. Performance concerns from performance critical envinronment caused us to do LVM performance research which showed horrible results forcing us to look at more performing alternatives. Innodb Hot Backup is a good working solution but it is not Open […]

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Percona is hiring performance experts

 | February 13, 2009 |  Posted In: Events and Announcements

Percona is hiring. We’ve added several experts recently and we’re growing at a fast but sustainable pace. The demand for our services is strong, and we have openings for more experts in the next couple of months. Let me explain a little about what we’re looking for at the moment. While we do have a […]

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Limiting InnoDB Data Dictionary

 | February 11, 2009 |  Posted In: Percona Software

One of InnoDB’s features is that memory allocated for internal tables definitions is not limited and may grow indefinitely. You may not notice it if you have an usual application with say 100-1000 tables. But for hosting providers and for user oriented applications ( each user has dedicated database / table) it is disaster. For […]

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Impact of logging on MySQL’s performance

 | February 10, 2009 |  Posted In: Benchmarks

Introduction When people think about Percona’s microslow patch immediately a question arises how much logging impacts on performance. When we do performance audit often we log every query to find not only slow queries. A query may take less than a second to execute, but a huge number of such queries may significantly load a […]

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Beware of MySQL Data Truncation

 | February 7, 2009 |  Posted In: Insight for DBAs

Here is nice gotcha which I’ve seen many times and which can cause just a minefield for many reasons. Lets say you had a system storing articles and you use article_id as unsigned int. As the time goes and you see you may get over 4 billions of articles you change the type for article_id […]

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Announcing Percona Performance Conference 2009 on April 22 & 23

 | February 5, 2009 |  Posted In: Events and Announcements

…any sessions this year; Peter, Vadim, and the rest of us at Percona submitted over a dozen session proposals, which were initially declined. As …Cabral is organizing.

That’s the back story — now on to the Percona Performance Conference! This is not “another MySQL conference.” It’s a performance…to Santa Clara.

We will not be the only ones speaking at Percona Performance Conference; other experts will join us in making presentations too. …to propose a session, please do so through the Percona Performance Conference website.

The Percona team looks forward to greeting you face to face …

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Pretending to fix broken group commit

 | February 2, 2009 |  Posted In: Percona Software

The problem with broken group commit was discusses many times, bug report was reported 3.5 years ago and still not fixed in MySQL 5.0/5.1 (and most likely will not be in MySQL 5.1). Although the rough truth is this bug is very hard (if possible) to fix properly. In short words if you enable replication (log-bin) on server […]

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Faster MySQL failover with SELECT mirroring

 | February 1, 2009 |  Posted In: Insight for DBAs

One of my favorite MySQL configurations for high availability is master-master replication, which is just like normal master-slave replication except that you can fail over in both directions. Aside from MySQL Cluster, which is more special-purpose, this is probably the best general-purpose way to get fast failover and a bunch of other benefits (non-blocking ALTER […]

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