Tag Archives: server

Linux top: Here’s how to customize it

The top command – referred to below as Linux top – provides a dynamic real-time view of a running system. It can display system summary information as well as a list of processes or threads currently being managed by the Linux kernel. The types of system summary information shown by Linux top command and the order […]

Nginx tuning tips: TLS/SSL HTTPS – Improved TTFB/latency

As of 30th June 2018, the PCI Security Standards Council requires that support for SSL 3.0 and TLS 1.0 be disabled. TLS 1.1 or higher must be used and TLS 1.2 is strongly recommended. In addition, starting this July, Google Chrome will begin to mark HTTP web sites as “not secure”. Over the past few years, […]

Free Linux Server Monitoring and APM solutions for SysAdmins

Today’s software applications require developers, testers, and SysAdmins to work together (DevOps) 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 application performance monitoring (APM), comes in. APM is also referred to as application performance measurement or application performance management. […]

How to upgrade to PHP 7 on RHEL/CentOS

TL;DR = Upgrade to PHP 7 using Remi’s RPM repository – PHP Configuration wizard. Red Hat Enterprise Linux (RHEL) is a Linux distribution developed by Red Hat targeted toward the commercial market. Red Hat uses strict trademark rules to restrict free re-distribution of its officially supported versions, but still freely provides its source code. Third-party derivatives […]

atop for Linux server performance analysis, here’s how

We’re all familiar with top, a real-time system monitor. Some prefer htop and previously I mentioned iotop for disk read/write monitoring. Lets looks at another popular tool for Linux server performance analysis… atop. Atop is a ASCII full-screen performance monitor which can log and report the activity of all server processes. One feature I really like is that atop […]

Logagent: The Swiss Army Knife for Log Processing?

Guest post by Stefan Thies DevOps Evangelist at Sematext Group Inc. Dealing with log files or extracting data from various data sources is a daily task in the IT administration. Users ask about statistics or details of their technical or business operations. The relevant data is often present in log files, databases or message queues. Converting […]

100+ Server Monitoring & Application Performance Monitoring Solutions

Last Updates: May 16th 2018, 100+ December 1st 2017 update: 70 100 Top Server Monitoring & Application Monitoring Tools. August 6th 2017 update: 50 70 Top Server Monitoring & Application Monitoring Tools. Back in 2014, I compiled a list of the top 20 server performance monitoring solutions. Largely because I already had a list saved locally for my own reference. Sharing that list […]

Avoid This When Tuning MySQL Query Cache for Performance

One of the most misconfigured MySQL performance features, is MySQL Query Cache Size. This post references a web server with 32 gigabytes of RAM where the existing config had MySQL’s query cache size set incorrectly to 4 gigabytes. The thought behind it seemed to be that more is better. Since the server has free RAM available, setting MySQL Query Cache […]

Best Linux Server Distro by main focus/strength

Are you trying to decide on a Linux server distro (distribution)? This article will help guide you based on the strengths of the Linux server distributions available. If you are looking for desktop advice, have a look at Choosing the Best Linux Distro for Desktop.   Best Linux Server distro Again, the first rule to remember […]

Strip Down Apache to Improve Performance & Memory Efficiency

Can you believe that its been 5 years since the release of Apache 2.4?! Still, most Apache based web servers continue to run Apache version 2.2 or even 2.0. This is understandable for the same reasons why Apache web servers are still used more than Nginx… compatibility, official support and features. If you haven’t replaced Apache […]