How to diagnose OOM errors on Linux systems

Out-of-memory (OOM) errors take place when the Linux kernel can’t provide enough memory to run all of its user-space processes, causing at least one process to exit without warning. Without a comprehensive monitoring solution, OOM errors can be tricky to diagnose. In this post, you will learn how to diagnose OOM errors in Linux kernels […]

bashtop – the ‘cool’ top alternative.

Meet bashtop, an esthetically pleasing system monitor, written completely in Bash. Yup, you can view all 5000 lines of code, by simply opening /usr/bin/bashtop with a text editor or view on Github. Over the years, the available options for command-line system monitoring tools have grown quite a bit. There is top, htop, glances, nmon, ytop, gtop, vtop, and […]

Apache Performance: Disable .htaccess

A while back, I searched the web for a performance article which I could forward to a client of StackLinux. An article explaining how using WordPress Cache plugins which make use of .htaccess, are almost always slower than plugins that don’t use .htaccess. Surprisingly, that search took a lot longer than expected, until I finally came across this […]

How to Optimize Your Cloud Services Cost

In this blog post, we review some of the biggest risks behind increasing services cost and how to optimize cloud services cost with a proper application monitoring solution. As modern software deployments continue to break down into smaller and more modular units, the world is seeing more moving parts in the deployment equation. The drivers […]

Disable cron emails (solution)

Cron is a daemon that executes scheduled commands. More specifically, the software utility cron is a time-based job scheduler for Unix-like operating systems, like Linux. Cron can be used to set up jobs to run periodically at fixed times, dates, or intervals. Cron is an extremely powerful tool because just about anything that you are able […]