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XtraDB storage engine release 1.0.2-3 (Spring edition) codename Sapporo

 | March 2, 2009 |  Posted In: Percona Software

Today we announce release 1.0.2-3 of our XtraDB storage engine. Here is a list of enhancements: Move to MySQL 5.1.31 Scalability fix — ability to use several rollback segments Increasing the number of rseg may be helpful for CPU scale of write-intentional workloads. See benchmark results. Scalability fix — replaced page_hash mutex to page_hash read-write […]

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Understanding Performance Optimization Terminology

 | March 2, 2009 |  Posted In: Insight for Developers

There are few terms you need to have a good understanding if you’re working with high volume systems. I commonly see these mixed and people not understanding the difference between them. Performance – The performance comes down to performing up to users expectations (or expectations of your boss) which drills down to two important metrics […]

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KISS KISS KISS

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

When I visit customers quite often they tell me about number of creative techniques they heard on the conferences, read on the blogs, forums and Internet articles and they ask me if they should use them. My advice is frequently – do not. It is fun to be creative but creative solutions also means unproven […]

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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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