September 1, 2014

Call for opinions: Do we need MySQL 5.0 with MySQL 5.4 performance

MySQL 5.4 comes with Innodb engine which seems to have much better performance than MySQL 5.0 – this is due to locking and IO patches from Google integrated in this release (which are similar to appropriate Percona patches) as well as some unique fixes such as different innodb_thread_concurrency handling and other optimization. Should we take […]

5.0.75-build12 Percona binaries

After several important fixes to our patches we made binaries for build12. Fixes include: Control of InnoDB insert buffer to address problems Peter mentioned http://www.percona.com/blog/2009/01/13/some-little-known-facts-about-innodb-insert-buffer/, also check Bug 41811 to see symptoms of problem with Insert buffer. http://www.percona.com/docs/wiki/patches:innodb_io_patches * innodb_flush_neighbor_pages (default 1) – When the dirty page are flushed (written to datafile), this parameter determines […]

5.0.75-build11 percona binaries

As you may know Sun / MySQL made release of community 5.0.75 only as source code release. We made binaries with our patchset. Patches are mostly equal to build 10 http://www.percona.com/blog/2008/12/11/mysql-binaries-percona-build10/, only change: it includes bugfix for https://bugs.launchpad.net/percona-patches/+bug/308849 You can download binaries (RPMS x86_64) and sources with patches here http://www.percona.com/mysql/5.0.75-b11/

MySQL Binaries Percona build10

We made new binaries for MySQL 5.0.67 build 10 which include next fixes: We addressed concerns about potential logging and statistics overhead, so now you can fully turn on / off query statistics for microslow patch and user statistics in runtime. Next variables were added:

With both slow_query_log = OFF and userstat_running = OFF […]

MySQL 5.1 went to GA. Was it a good move ?

MySQL 5.1 release as “GA” seems to be the most controversial to date. It had very negative response from Monty, original MySQL Founder and controversial responses in community including another beating by Kevin Burton. There is also very interesting reading on MySQL 5.1 open bugs So how do I take it and where do I […]

MySQL End Of Life (EOL) Policy

We’ve discussed today how we should implement MySQL Version advisory in mk-audit tool. One obvious questions was to look at the end of life – it is often bad idea to run MySQL versions past end of life as even security bugs may not be fixed in these (though do not get paranoid, if you’re […]

Should we proclaim MySQL Community Edition Dead ?

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 […]

TPC-H Run on MySQL 5.1 and 6.0

We were doing MySQL Performance evaluation on TPC-H queries for the client and they kindly allowed us to publish results which are very interesting. This is obviously not audited TPC-H run, and it can’t be because we used MyISAM tables which are not ACID complaint. Plus we only measured Power to keep things simple. We […]

CentOS Comes with free build of MySQL Enterprise ?

As I already wrote you can well go to Linux distribution vendors if you’re looking for recent MySQL version in a hassle free binary form. (On the time of this writing you could only get binaries for MySQL Community 5.0.45 from MySQL Download Pages which was released in July and so about half a year […]

MySQL Installation and upgrade scripts.

I generally find MySQL Sever sufficiently tested, meaning at least minor version upgrades rarely cause the problems. Of course it is not perfect and I remember number of big issues when some releases could not be used due to behavior changes in them and when something had to be rolled back in the next release. […]