Tag - Linux

Watch Out for Disk I/O Performance Issues when Running EXT4

Performance Issues When Running EXT4

Recently, at Percona Live Europe 2019, Dimitri Kravchuk from Oracle mentioned that he observed some unclear drop in performance for MySQL on an ext4 filesystem with the latest Linux kernels. I decided to check this case out on my side and found out that indeed, starting from linux kernel 4.9, there are some cases […]

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Benchmark PostgreSQL With Linux HugePages

Benchmarking HugePages and PostgreSQL

Linux kernel provides a wide range of configuration options that can affect performance. It’s all about getting the right configuration for your application and workload. Just like any other database, PostgreSQL relies on the Linux kernel to be optimally configured. Poorly configured parameters can result in poor performance. Therefore, it is important that you […]

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Modifying List of Collected Metrics on PMM Linux Exporter

Changing metrics collection with PMM for Linux

Do you need to modify the metrics collected from Linux by Percona Monitoring and Management (PMM)? In this blog post we will see how to enable, disable, and update collected metrics on PMM’s linux:metrics exporter. 
We will assume that the PMM client packages are installed, and they are configured already.
Using a custom list of metrics
Let’s now suppose we […]

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Linux OS Tuning for MySQL Database Performance

Linux OS tuning for MySQL database performance

In this post, we will review the most important settings for Linux performance tuning to adjust for optimization of a MySQL database server. We’ll note how some of the Linux parameter settings used OS tuning may vary according to different system types: physical, virtual or cloud. Other posts have addressed MySQL parameters, like Alexander’s […]

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