What if your servers crashed during your biggest sales event of the year? For enterprise IT leaders, that’s not a dramatic opening it’s a recurring risk. A few minutes of downtime can stall transactions, damage customer trust, erode brand reputation, and drain revenue at an alarming rate. With modern applications running across hybrid clouds, distributed […]
What is Linux iowait? (Explained With Examples)
iowait (wait, wa, %iowait, wait%, or I/O wait) is often displayed by command-line Linux system monitoring tools such as top, sar, atop, and others. On its own, it’s one of many performance stats that provide us insight into Linux system performance. I/O wait came up in a recent discussion with a new client. During our support […]
Guide to Optimizing PHP for High Traffic Sites
Note: This article serves as an overview and index, connecting you to previous detailed PHP optimization articles. For comprehensive insights on each topic, please follow the provided links to previous articles under the subheadings below. It made more sense to connect these articles here for your convenience, rather than trying to merge 12 articles covering […]
Self-hosted Projects That Earn (Make money from your Home lab)
If you run a home lab long enough, this realization eventually hits you: a lot of your hardware spends more time idle than working. Servers sized for future growth, machines you planned to use for one thing but never quite did, systems that stay powered on 24/7 but barely break a sweat. Thanks to how […]
Rolling Network Racks: The Ultimate Upgrade for Home Networks
This article focuses on the benefits of rolling network racks for established or expanding home networks. If you’re looking for a comprehensive guide to building your first home lab, read my Home Lab Beginners Guide to Hardware article. Managing a modern home network or home lab often involves juggling multiple devices, cables, and upgrades. After […]
50 Top Observability and Monitoring Solutions – 2026
“A more targeted list that includes 50 server and observability solutions for 2026” Back in 2014, I compiled a list of top server and application performance monitoring solutions. Sharing that list publicly was a great way to gain feedback and recommendations on other tools available. Over time that list grew from 20 to over 100 server monitoring […]
Learn Linux: 4 Devices to boost your Linux skills (2026)
Ready to go on a journey that will take your Linux skills to the next level and beyond what theoretical learning can? The devices in this article will give you hands-on experience and change how you think and use Linux skills in real-life scenarios. What is the Linux Operating System? Linux is a free and […]
Free Linux Server Monitoring and APM solutions for SysAdmins
Today’s software applications require developers, testers, and SysAdmins to work together (DevSecOps) more seamlessly than ever before. A single line of code or poorly configured service can negatively impact your application’s performance, causing crippling slowdowns for end-users. This is where infrastructure and application monitoring comes in. Regarding Linux server monitoring, monitoring critical performance metrics of […]
Ubuntu LTS Support Extended to 15 Years
If you’re like me and value a rock-solid Linux setup that you don’t have to reinstall every couple of years, you’ll appreciate this news. I recently wrote about switching my daily OS from Kali Linux Rolling to Ubuntu 24.04 LTS (with Ubuntu Pro’s ESM) specifically for its long-term support benefits. That move meant I could […]
100 Top Observability Tools (+ Server Monitoring and APM solutions)
Looking for application monitoring and observability solutions? On this page, I’ve listed the top application performance monitoring (APM), infrastructure monitoring, and observability solutions to date. The listings are updated periodically as APM and observability solutions continue a rapid evolution. While I haven’t tested all of these solutions, I’ve used more than a third of them. […]
