October 21, 2014

MySQL Performance on Memory Appliance

Recently I have had a chance to check out MySQL Performance on “Memory Appliance” by Violin Memory which can be used as extremely high speed storage system. I helped Violin Memory to optimize MySQL for customer workload and Violin memory and also had a chance to do some benchmarks on my own. 2*Quad Core Xeon […]

Using MMM to ALTER huge tables

Few months ago, I wrote about a faster way to do certain table modifications online. It works well when all you want is to remove auto_increment or change ENUM values. When it comes to changes that really require table to be rebuilt – adding/dropping columns or indexes, changing data type, converting data to different character […]

Welcome to the team, Baron

As you may have seen from his blog, Baron Schwartz is joining our consulting company – Percona in less than a week. This is exciting news for us as Baron is renowned MySQL community member, blogger, co-author of High Performance MySQL second edition book, author of Maatkit and Innotop and just a great guy. Welcome […]

MySQL and Sun – Oportunity for smaller companies ?

Reading Martens interview we see the quite: “As soon as the deal closed we immediately secured a big deal with a major European national police agency,” said Mickos, now SVP database products at Sun. “Key to them choosing MySQL was that we are now part of a much larger public corporation. The deal wouldn’t have […]

MySQL Public Worklog and Community Focus

MySQL made some tasks from their internal task tracking tool – Worklog a while back. I just have not look at it besides checking Maria related tasks until couple of days ago as Jay announced new Forge going live. Check it out – there are a lot of nice ideas out where. I can find […]

MySQL 6.0 vs 5.1 in TPC-H queries

Last week I played with queries from TPC-H benchmarks, particularly comparing MySQL 6.0.4-alpha with 5.1. MySQL 6.0 is interesting here, as there is a lot of new changes in optimizer, which should affect execution plan of TPC-H queries. In reality only two queries (from 22) have significantly better execution time (about them in next posts), […]

MySQL File System Fragmentation Benchmarks

Few days ago I wrote about testing writing to many files and seeing how this affects sequential read performance. I was very interested to see how it shows itself with real tables so I’ve got the script and ran tests for MyISAM and Innodb tables on ext3 filesystem. Here is what I found:

How many people will leave MySQL now ?

During the recent days we had few announcements of people leaving Sun/MySQL – few days ago I’ve seen announcement by Ronald Bradford and now I see Antony Curtis followed. I know bunch of other guys which are considering to leave or stay. I do not surprising – how much “better” Sun is compared to Microsoft […]

Big Iron for tests anyone ?

MySQL Users Conference is coming and with it my presentation about Innodb Scalability limits. We did bunch of tests but we surely could get benefit of some extra hardware for testing, so if you could provide us with dedicated remote access for benchmarks it would be great. Here is what we’re looking for in particular: […]

MySQL Query Cache WhiteSpace and comments

Commenting on my previous post on MySQL Query Cache Gerry pokes me as I’m all wrong and both comments and whitespace are fixed in MySQL 5.0. This was not what I remember seeing in production so I decided to do some tests on the matter: