Disclaimer: Everything below has been published previously online in Arch’s extensive wiki. However, for whatever reason there’s still a lot of misinformation about Arch’s stability and many users are not aware that these published tips exist. This short article aims to raise awareness of the best routes for a more stable Arch Linux experience. That’s not […]
Observability: 15 Industry-Leading Companies Discuss its Evolution
In this article, you’ll find recent commentary from executives and decision-makers of industry-leading observability providers for two key questions regarding the evolution of observability. First published: May 17th, 2021 Layout updated: July 23rd, 2021 The observability cloud continues to expand and evolve rapidly. Over the past year, millions of workers left their offices to work […]
How to fix: At least xMB more space needed on the /boot filesystem
Running sudo dnf upgrade in Fedora CentOS or RHEL will sometimes result in the following error: At least xxMB more space is needed on the /boot filesystem. Let’s fix this! List all installed kernel packages with: yum list kernel On Fedora 22+, CentOS 8 and RHEL 8+, use: dnf list kernel The kernel in-use will […]
PHP-FPM tuning: Using ‘pm static’ for max performance
Let’s take a very quick look at how best to set up PHP-FPM for high throughput, low latency, and more stable use of CPU and memory. By default, most setups have PHP-FPM’s PM (process manager) string set to dynamic and there’s also the common advice to use ondemand if you suffer from available memory issues. However, let’s compare the two management […]
Linux server needs a RAM upgrade? Check with top, free, vmstat and sar.
Sometimes it can be a bit of a challenge knowing if and when you should upgrade the RAM (random access memory) on your Linux server. Even more so when deciding how much memory you should add, or, if you have adequate memory, how do you make best use of it? This article will walk you […]
Set PHP realpath_cache_size ‘correctly’
Back in 2012 I started enabling PHP realpath_cache_size and realpath_cache_ttl for the performance benefits. At the time, I followed settings I found here (has since been deleted). It bugged me that I was blindly setting the size of the cache without actually knowing how much storage was being used. In this post I will show you how to […]
Linux server performance: Is disk I/O slowing your application?
If your Linux server is bogged down, your first step may often be to use the top command in the terminal to check load averages. However, there are times when top shows very high load averages even with low CPU ‘us’ (user) and high CPU ‘id’ (idle) percentages. This is the case in the video […]
25 Best CDN Providers 2021
A content delivery network also referred to as a content distribution network (CDN), is a geographically distributed network of data centers containing proxy servers. CDN providers serve internet content, including web objects (text, graphics, and scripts), downloadable objects (media files, software, documents), applications (e-commerce, portals), live streaming media, to name closer to and thus faster, to end-users. Some of […]
Nginx tuning tips: TLS/SSL HTTPS – Improved TTFB/latency
Since 30th June 2018, the PCI Security Standards Council has required that support for SSL 3.0 and TLS 1.0 be disabled and, more recently, to disable TLS 1.1. Using TLS 1.2 and 1.3 is strongly recommended. In addition, as of July 2018, Google Chrome began to mark ‘HTTP’ websites as “not secure.” Over the past […]
Tuning MySQL my.cnf? Avoid this common pitfall!
It took me some time to decide the title for this article. MariaDB has been fast replacing MySQL as a growing number of Linux distributions now default to MariaDB over MySQL. MariaDB is an enhanced, drop-in replacement for MySQL. Therein lies my predominantly self-made conundrum, MySQL or MariaDB? That said, the MySQL tuning advice below […]