Author - Yves Trudeau

How To Best Use Percona Server Column Compression With Dictionary

Database Compression

Very often, database performance is affected by the inability to cache all the required data in memory. Disk IO, even when using the fastest devices, takes much more time than a memory access. With MySQL/InnoDB, the main memory cache is the InnoDB buffer pool. There are many strategies we can try to fit as […]

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Lock Down: Enforcing AppArmor with Percona XtraDB Cluster

Enforcing AppArmor with Percona XtraDB Cluster

Recently, I wrote a blog post showing how to enforce SELinux with Percona XtraDB Cluster (PXC). The Linux distributions derived from RedHat use SELinux. There is another major mandatory discretionary access control (DAC) system, AppArmor. Ubuntu, for example, installs AppArmor by default. If you are concerned by computer security and use PXC on Ubuntu, […]

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Lock Down: Enforcing SELinux with Percona XtraDB Cluster

SELinux for PXC security

Why do I spend time blogging about security frameworks? Because, although there are some resources available on the Web, none apply to Percona XtraDB Cluster (PXC) directly. Actually, I rarely encounter a MySQL setup where SELinux is enforced and never when Percona XtraDB Cluster (PXC) or another Galera replication implementation is used. As we’ll […]

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Webinar Wednesday, March 28, 2018: ZFS with MySQL

ZFS with MySQL

Please join Percona’s Principal Architect in Architecture & Projects, Yves Trudeau, as he presents ZFS with MySQL on Wednesday, March 28, 2018, at 7:00 am PDT (UTC -7) / 10:00 am EDT (UTC -4).
Are you curious about ZFS? Would you like to learn how to setup and configure ZFS? What about ZFS with MySQL?
ZFS […]

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Fsync Performance on Storage Devices

fsync

While preparing a post on the design of ZFS based servers for use with MySQL, I stumbled on the topic of fsync call performance. The fsync call is very expensive, but it is essential to databases as it allows for durability (the “D” of the ACID acronym).
Let’s first review the type of disk IO operations […]

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The hidepid Options for /proc and Percona XtraDB Cluster Don’t Play Well Together

hidepid

In this blog, we’ll look at how the hidepid options for /proc and Percona XtraDB Cluster can fight with one another.
One of the things I like about consulting at Percona is the opportunity to be exposed to unusual problems. I recently worked with a customer having issues getting SST to work with Percona XtraDB […]

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Hands-On Look at ZFS with MySQL

ZFS with MySQL

This post is a hands-on look at ZFS with MySQL.
In my previous post, I highlighted the similarities between MySQL and ZFS. Before going any further, I’d like you to be able to play and experiment with ZFS. This post shows you how to configure ZFS with MySQL in a minimalistic way on either Ubuntu […]

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ZFS from a MySQL perspective

Open ZFS logo

Since the purpose of a database system is to store data, there is close relationship with the filesystem. As MySQL consultants, we always look at the filesystems for performance tuning opportunities. The most common choices in term of filesystems are XFS and EXT4, on Linux it is exceptional to encounter another filesystem. Both XFS […]

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