Slides for Instrumenting Plugins for Performance Schema, Fosdem 2017
I had great fun at my first Fosdem over the weekend with everybody that turned up to the http://www.mysqlandfriends.eu/ dev room. Kudos to the organizers there, @lefred, @gryp, @dim0, and all the...
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Overview Of Different MySQL Replication Solutions
In this blog post, I will review some of the MySQL replication concepts that are part of the MySQL environment (and Percona Server for MySQL specifically). I will also try to clarify some of the...
View ArticleCustomizing pt-stalk to Capture the Diagnostics Data You Really Need
Valeriy Kravchuk’s great recent post on using oprofile to profile MySQL mentioned how pt-stalk, the script from Percona Toolkit to capture diagnostics data based on a detected condition, currently does...
View ArticleMySQL Workbench 6.3.9 GA has been released
Dear MySQL users, The MySQL developer tools team announces 6.3.9 as our GA release for MySQL Workbench 6.3. For the full list of changes in this revision,...
View ArticleMySQL Workbench 6.3.9 GA has been released
The MySQL developer tools team announces 6.3.9 as our GA release for MySQL Workbench 6.3. For the full list of changes in this revision, visit...
View ArticleA Metric for Tuning Parallel Replication in MySQL 5.7
MySQL 5.7 introduced the LOGICAL_CLOCK type of multi-threaded slave (MTS). When using this type of parallel replication (and when slave_parallel_workers is greater than zero), slaves use information...
View ArticleUpgrading your MySQL Server Farm
There are several advantages to keeping up to date with the latest major versions of MySQL. To provide a short example using MySQL 5.7: Let application developers benefit from new functionality, e.g....
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MySQL super_read_only Bugs
This blog we describe an issue with MySQL 5.7’s super_read_only feature when used alongside with GTID in chained slave instances. Background In MySQL 5.7.5 and onward introduced the gtid_executed table...
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MySQL Server log Maintenance
As a part database administration, DBA has to take care of sub-components of database like server logs and has to plan for maintenance activity for these components regularly. MySQL has various types...
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More on MyRocks Performance for Bug #68079 Case
My previous post on MyRocks was intended to provide some background details for a couple of slides for my FOSDEM talk on profiling MySQL. The results and performance demonstrated by MyRocks vs InnoDB...
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Percona Server 5.6.35-80.0 is Now Available
Percona announces the release of Percona Server 5.6.35-80.0 on February 8, 2017. Download the latest version from the Percona web site or the Percona Software Repositories. Based on MySQL 5.6.35, and...
View ArticleMySQL 8 Invisible Indexes
MySQL 8 features invisible indexes. But what good is an index if you can see it? br>Is It Really InvisibleYou probably know by now that indexes can really speed up data searches. And many of you...
View ArticleMariaDB is Coming to a City Near You!
MariaDB is Coming to a City Near You! Public Relations Wed, 02/08/2017 - 14:32 Join us for one of our full-day roadshows coming to a city near you! MariaDB is hosting educational roadshows across...
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MyRocks, InnoDB and in-memory insert performance
This is yet another result to understand an insert-only workload. In this case the database is small enough to be cached by the storage engine. Previous results were explained here, here and here. From...
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How to deploy and manage MySQL multi-master replication setups with...
MySQL replication setups can take different shapes. The main topology is probably a simple master-slave setup. But it is also possible to construct more elaborate setups with multiple masters and...
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How to run integration tests at warp speed using Docker and tmpfs
Introduction As previously explained, you can run database integration tests 20 times faster! The trick is to map the data directory in memory, and my previous article showed you what changes you need...
View ArticleTreating NULLs as not less than zero in ORDER BY
I was working on a seemingly basic query the other day where the user needed to have an INT column listed in ascending order (i.e., 1, 2, 3, …). However, the tricky part came in because the column...
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Using NVME Command Line Tools to Check NVMe Flash Health
In this blog post, I’ll look at the types of NVMe flash health information you can get from using the NVMe command line tools. Checking SATA-based drive health is easy. Whether it’s an SSD or older...
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MySQL version poll: a not so scientific analysis
Prior to my talk at LaraconEU 2016 I was curious to know how much adoption for MySQL 5.7 was in within the community. I tweeted this: Pool, use twitter client to see it: Which Version of MySQL do you...
View ArticleContributing to popular frameworks for scalability
Right now we’re volunteering some engineering time to assisting the WordPress and WooCommerce people with scalability issues. In the past we’ve put similar efforts into Drupal. There are many opinions...
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