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Performance improvements in Percona 5.0.83 and XtraDB

 | July 14, 2009 |  Posted In: Benchmarks

There was small delay in our releases, part of this time we worked on features I mentioned before: – Moving InnoDB tables between servers – Improve InnoDB recovery time and rest time we played with performance trying to align XtraDB performance with MySQL 5.4 ® and also port all performance fixes to 5.0 tree. So […]

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Is DRBD the right choice for me?

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

It seems pretty common to find customers install DRBD for the wrong reasons. There are many pros/cons to compare DRBD to replication, but I’ve managed to cut down my spiel I give to customers to these two points: DRBD’s aim (assuming replication mode C) is to provide 100% consistency, and then as much uptime as […]

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Enum Fields VS Varchar VS Int + Joined table: What is Faster?

 | January 24, 2008 |  Posted In: Benchmarks

Really often in customers’ application we can see a huge tables with varchar/char fields, with small sets of possible values. These are “state”, “gender”, “status”, “weapon_type”, etc, etc. Frequently we suggest to change such fields to use ENUM column type, but is it really necessary (from performance standpoint)? In this post I’d like to present […]

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Intel Woodcrest vs AMD Opteron for MySQL

 | June 8, 2006 |  Posted In: Benchmarks

AnandTech published Intel Woodcrest preview benchmarks which have some numbers for MySQL as well. From these numbers performance looks great and it looks like finally Intel has something to respond to AMD Opterons on Server market. Now competition heats up and we’ll see what AMD will have to respond. As Opteron did not have serious […]

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MySQL INSERT ON DUPLICATE KEY UPDATE and counters

 | May 29, 2006 |  Posted In: Insight for DBAs

MySQL INSERT ON DUPLICATE KEY UPDATE is very powerful but often forgotten MySQL feature. It was introduced in MySQL 4.1 but I still constantly see people unaware of it. Myself I like this feature big deal because it is designed in truly MySQL style – very efficient solution for frequent task while keeping it beautiful […]

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MySQL Server Memory Usage

 | May 17, 2006 |  Posted In: Insight for DBAs

Every so often people ask me the question how should they estimate memory consumption by MySQL Server in given configuration. What is the formula they could use. The reasons to worry about memory usage are quite understandable. If you configure MySQL Server so it uses too small amount of memory it will likey perform suboptimally. […]

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