We prepared RPMs of our release for RedHat 5 / CentOS 5 x86_64 platform. http://www.mysqlperformanceblog.com/mysql/RPM/RHEL5/5.0.62/ There was question what patcheset includes and if there is manuals. We have: microsecond resolution in slow-log extended query plan in slow-log and InnoDB statistics. You can read more here http://www.mysqlperformanceblog.com/2008/04/20/updated-msl-microslow-patch-installation-walk-through/ User / Table / Index statistics (Google’s patch). More [...]
The #1 mistake hosting providers make for MySQL servers
July 25, 2008 By 30 Comments
This article is not meant to malign hosting providers, but I want to point out something you should be aware of if you’re getting someone else to build and host your servers for you. Most hosting providers — even the big names — continue to install 32-bit GNU/Linux operating systems on 64-bit hardware. This is [...]
Is DNS the Achilles heel in your MySQL installation?
May 31, 2008 By 16 Comments
Do you have skip_name_resolve set in your /etc/my.cnf? If not, consider it. DNS works fine, until it doesn’t. Don’t let it catch you off guard. Do you really need to restrict MySQL users based on hostnames? If you don’t, you should probably disable this feature of MySQL’s authentication system. You never know when your hosting [...]
MySQL extensions for hosting
April 24, 2008 By 11 Comments
A few weeks ago I was asked to isolate some functionalities from Mark Callaghan’s MySQL patch bundle. They were extensions adding per-user and per-table accounting to the database, accessible with a new set of commands such as SHOW TABLE_STATISTICS, SHOW INDEX_STATISTICS and SHOW USER_STATISTICS. The first two can interest anyone to periodically check what data [...]
10+ Ways to Crash or Overload MySQL
November 13, 2007 By 20 Comments
People are sometimes contacting me and asking about bugs like this which provide a trivial way to crash MySQL to the user with basic privileges and asking me what to do. My answer to them is – there is nothing new to it and they just sit should back and relax Really – there are [...]
Innodb Undelete and Sphinx Support
November 12, 2007 By 4 Comments
At Percona we are pleased to announce couple of services which should be helpful to MySQL Community and which are not offered by MySQL, Oracle and other companies I know about. First we now do Data Recovery for MySQL. We’re mainly focused on Innodb with this one because it has distinct page structure which allows [...]
Traffic Tricks by Hosting Providers.
October 17, 2007 By 13 Comments
I already wrote once about hosting troubles which we had with this site a while back. Today we had another trouble to one of the European hit servers for ClickAider project. We had purchased this 1and1 server few months ago, before we were running into troubles and as it was running well and because we [...]
Using VIEW to reduce number of tables used
September 28, 2007 By 12 Comments
Many Open Source software solutions use database per user (or set of tables per user) which starts to cause problems if it is used on massive scale (blog hosting, forum hosting etc), resulting of hundreds of thousands if not millions of tables per server which can become really inefficient. It is especially inefficient with Innodb [...]
VOIP Advice requested
September 10, 2007 By 10 Comments
As one of my last posts about issues with hosting provider got great response and We got a lot of good advice and offers I decided to ask for advice another problem we have as we’re growing our company – organizing good phone communications. Our goals are rather simple though the fact we’re globally distributed [...]
Site was down today, support and web hosting.
August 31, 2007 By 27 Comments
During last one and a half year we had pretty good track record with MySQL Performance Blog – there were times when site was slow (especially when backup was running) but I do not remember significant downtime, until today we went down for few hours. All this time the site was running on dedicated server [...]
