by Peter Zaitsev | Sep 27, 2010 | MySQL, Percona Events
During my visit to Moscow, Russia next month I’m going to give a full day training/tutorial presentation on Diagnosing and Fixing MySQL Performance Problems . This even will be based on updated and expanded tutorial from MySQL Conference & Expo which was so...
by Aleksandr Kuzminsky | Sep 27, 2010 | MySQL, Percona Software
Dear Community, Percona Server version 5.1.50-rel11.4 is now available for download. The changes in this release include: New features The primary purpose of this release is to update to the latest version of MySQL 5.1. Percona Server 5.1.50-rel11.4 is now based on...
by Peter Zaitsev | Sep 23, 2010 | Insight for Developers, MySQL
I wrote couple of weeks ago on dangers of bad cache design. Today I’ve been troubleshooting the production down case which had fair amount of issues related to how cache was used. The deal was as following. The update to the codebase was performed and it caused...
by Zardosht.Kasheff | Sep 16, 2010 | MySQL
TokuDB’s loader uses the available multicore computing resources of the machine to presort and insert the data. In the last couple of posts (here and here), Rich and Dave presented performance results of TokuDB’s loader. Comparing load times with TokuDB...
by Aleksandr Kuzminsky | Sep 15, 2010 | MySQL, Percona Software
Dear Community, Starting with this release, we introduce a new release model for Percona Server. From now on, we will have both Stable and Release Candidate releases. Release Candidates will introduce new features not yet available in Stable releases. Along with new...
by Peter Zaitsev | Sep 10, 2010 | Insight for Developers, MySQL
I worked on the problem recently which showed itself as rather low MySQL load (probably 5% CPU usage and close to zero IO) would spike to have hundreds instances of threads running at the same time, causing intense utilization spike and server very unresponsive for...
by Aleksandr Kuzminsky | Sep 10, 2010 | Percona Software
Dear Community, Percona Server version 5.1.49-rel11.3 is now available for download. The changes in this release include: New features Percona Server 5.1.49-rel11.3 is based on MySQL 5.1.49. A new variable was introduced: innodb_use_sys_stats_table. If ON, the...
by Peter Zaitsev | Sep 10, 2010 | Percona Events
The First ever Sphinx Users Conference is announced to take place in Moscow, Russia on October 24th, which is the Sunday before Highload.ru conference, so if you’re attending that you may just drop by to this event too. this is going to be free technically...
by Aurimas Mikalauskas | Sep 6, 2010 | MySQL
Few days ago I was working on a case where we needed to modify a lot of data before pushing it to sphinx – MySQL did not have a function to do the thing so I thought I’ll write MySQL Stored Function and we’ll be good to go. It worked! But not so well...
by Peter Zaitsev | Sep 2, 2010 | Insight for DBAs, MySQL
How long it may take MySQL with Innodb tables to shut down ? It can be quite a while. In default configuration innodb_fast_shutdown=ON the main job Innodb has to do to complete shutdown is flushing dirty buffers. The number of dirty buffers in the buffer pool varies...
by Tokutek | Sep 2, 2010 | MySQL
Often, the first step in evaluating and deploying a database is to load an existing dataset into the database. In the latest version, TokuDB makes use of multi-core parallelism to speed up loading (and new index creation). Using the loader, MySQL tables using TokuDB...
by Baron Schwartz | Aug 31, 2010 | MySQL, Percona Software
Ignacio Nin and I (mostly Ignacio) have worked together to create tcprstat[1], a new tool that times TCP requests and prints out statistics on them. The output looks somewhat like vmstat or iostat, but we’ve chosen the statistics carefully so you can compute...
by Rich.Prohaska | Aug 27, 2010 | MySQL
TokuDB has a big advantage over B-trees when trickle loading data into existing tables. However, it is possible to preprocess the data when bulk loading into empty tables or when new indexes are created. TokuDB release 4 now uses a parallel algorithm to speed up these...
by Sasha Pachev | Aug 23, 2010 | Insight for DBAs, MySQL
I recently encountered an interesting case. A customer reported that mysqld crashed on start on OpenSUSE 11.2 kernel 2.6.31.12-0.2-desktop x86_64 Â with 96 GB RAM when the innodb_buffer_pool_size was set to anything more than 62 GB. I decided to try it with 76 GB....
by John.Partridge | Aug 19, 2010 | MySQL
Tokutek is pleased to announce immediate availability of TokuDB for MySQL, version 4.1.1. It is ideally suited for delivering fast response times for complex / high-volume Web applications that must simultaneously store and query large volumes of rapidly arriving...
by Yves Trudeau | Aug 19, 2010 | Insight for DBAs, MySQL
This post is the fourth of a series that started here. From the previous of this series, we now have resources configured but instead of starting MySQL, Pacemaker invokes a script to start (or restart) the EC2 instance running MySQL. This blog post describes the...
by Morgan Tocker | Aug 19, 2010 | MySQL, Percona Events
Four Perconians (perconites?) will be at OpenSQL Camp in Sankt Augustin, Germany this weekend presenting talks on: Recovery of Lost or Corrupted InnoDB Tables Keep your MySQL backend online no matter what XtraDB — InnoDB on steroids Xtrabackup for MySQL If you...
by Morgan Tocker | Aug 18, 2010 | MySQL, Percona Events
We’re opening up registration for our new training courses today. In short: we are moving from two days to a new four-day format. The new additions are created by: Splitting our current InnoDB day in half. We now have one day for DBAs, and one day just on...
by Justin Swanhart | Aug 16, 2010 | MySQL
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...
by Martin.FarachColton | Aug 15, 2010 | MySQL
Tokutek is pleased to announce immediate availability of TokuDB for MySQL, version 4.1. It is designed for continuous querying and analysis of large volumes of rapidly arriving and changing data, while maintaining full ACID properties. New in TokuDB v4.1 includes...
