Shard-Query is an open source tool kit which helps improve the performance of queries against a MySQL database by distributing the work over multiple machines and/or multiple cores. This is similar to the divide and conquer approach that Hive takes in combination with Hadoop. Shard-Query applies a clever approach to parallelism which allows it to [...]
Testing MySQL column stores
August 16, 2010 By 15 Comments
Recently I had the opportunity to do some testing on a large data set against two MySQL column-store storage engines. I’d like to note that this effort was sponsored by Infobright, but this analysis reflects my independent testing from an objective viewpoint. I performed two different types of testing. The first focused on core functionality [...]
Air traffic queries in InfiniDB: early alpha
November 2, 2009 By 19 Comments
As Calpont announced availability of InfiniDB I surely couldn’t miss a chance to compare it with previously tested databases in the same environment. See my previous posts on this topic: Analyzing air traffic performance with InfoBright and MonetDB Air traffic queries in LucidDB I could not run all queries against InfiniDB and I met some [...]
Quick comparison of MyISAM, Infobright, and MonetDB
September 29, 2009 By 30 Comments
Recently I was doing a little work for a client who has MyISAM tables with many columns (the same one Peter wrote about recently). The client’s performance is suffering in part because of the number of columns, which is over 200. The queries are generally pretty simple (sums of columns), but they’re ad-hoc (can access [...]
XtraDB storage engine release 1.0.2-3 (Spring edition) codename Sapporo
March 2, 2009 By 10 Comments
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 [...]
XtraDB storage engine release 1.0.2-2 (New Year edition)
December 29, 2008 By 20 Comments
Today we announce release 1.0.2-2 of our XtraDB storage engine. Here is a list of enhancements: split-buffer_pool_mutex The patch splits global InnoDB buffer_pool mutex into several and eliminates waitings on flush IO and mutex when there is no enough free buffers. It helps if you have performance drops when data does not fit in memory. [...]
New MySQL Community release – Great job MySQL !
August 8, 2008 By 5 Comments
Wow!. New MySQL Community release – MySQL 5.0.67 is just out which as manual says first community release since 5.0.51b. I just recently complained about community release irregularity and I’m glad to see the new release after all. I only hope this will not be one time event but MySQL will follow its own promises [...]
Should we proclaim MySQL Community Edition Dead ?
July 1, 2008 By 34 Comments
We were chatting with Jeremy Cole today and he brought to my attention last version of MySQL Community Eddition (5.0.51) was released in November 2007 – over 7 months ago. MySQL 5.0.51a and MySQL 5.0.51b security fixes were released but these can’t be considered proper releases. If we look at the old Kaj’s Announcement we [...]
Updated msl (microslow) patch, installation walk-through!
April 20, 2008 By 17 Comments
For a couple of months there have been no updates to our msl patch, however recently I managed some time to change this. The functionality was extended a little bit and what’s even more important the patch is available for all the recent MySQL releases. To remind anyone who has not yet come across this [...]
Welcome to the team, Baron
March 26, 2008 By 7 Comments
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 [...]
