Linux Commands frequently used by Linux Sysadmins – Part 4
We are now up to part 4 of this five-part series entitled: Linux Commands frequently used by Linux Sysadmins. By the end of this series, we will cover at least 50 commands. Thus…
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Linux Commands frequently used by Linux Sysadmins – Part 2
Last week, I published part 1 of this five-part series entitled: Linux Commands frequently used by Linux Sysadmins. That first article scratched the surface of what, I believe, are 50 to 100 commands used often…
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iostat command in Linux with examples
This article is a follow-up to the previous 90 Linux Commands frequently used by Linux Sysadmins post. Every week, as time allows, I will publish articles on the 90 commands geared toward Linux…
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Observability Platforms at a Glance: Which One Suits Your Needs Best?
Observability is a critical aspect of modern software development, providing teams with the ability to monitor and understand the performance of their applications and infrastructure. Recently, several companies have emerged as leaders in…
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What is observability?
Leading software vendors have completed the expansion from traditional monitoring to full observability. However, there’s still a knowledge gap for customers interested in observability. As a result, some are left feeling a bit…
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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 on two key questions regarding the evolution of observability. Published: May 17th, 2021 | Updated: Aug 1st, 2024….
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Attain Peak Redis Server Performance with Proactive Monitoring
Remote Dictionary Server (Redis) is an open-source NoSQL database that comprises of a fast, in-memory data structure to store data in key-value pairs. It serves as a fast and highly efficient data store…
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PHP Performance: Additional CPU cores vs Faster CPU cores
Some time ago, I received an email from a client experiencing slow performance issues with a LEMP (Linux, Nginx, MySQL, and PHP web server). During a full audit, I found that the server’s…
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PHP 8: After 4 years, only 30% of PHP websites use it. But why?
Two years ago, one of our online community members discussed some of the reasons behind the slow adoption of PHP 8. One member stated that it’s due to PHP compatibility issues across new…
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5 database metrics every DBA should monitor for peak performance
Database monitoring is indispensable for maintaining the health, performance, and reliability of your database system. It provides administrators and IT teams with real-time insights into the system’s operations, enabling them to proactively identify…
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The Two Generals Problem
Table of Contents Alice and Bob Imagine there’s a city in a valley. On either side of the valley, there’s an army commanded by a general. On the left hill stands General Alice…
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Improving OpenVPN performance and throughput
You may have been following my Linux home lab build. One of the most important decisions when building your home lab is selecting the proper router/firewall for your network. After many hours of…
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Set PHP realpath_cache_size ‘correctly’
<?php var_dump(realpath_cache_size()); ?> Enjoy! realpath_cache_size = 4M realpath_cache_ttl = 120 Note that if your using Apache Prefork-mpm mod_php to run PHP (the fastest when loading only PHP and not with static content) then…
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PHP performance: oPcache Control Panels
OPcache is a PHP extension that improves PHP performance by storing precompiled script bytecode in shared memory, thereby removing the need for PHP to load and parse scripts on each request. The extension…
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PHP Benchmarks: OPcache vs OPcache w/ Performance Tweaks
These are not mind-blowing results. However, depending on your current throughput of PHP requests, you may be happy to take whatever improvements you can find. Also, this test was with WordPress only; with…
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Observability, Getting Started – 50 Free Access and Open-Source Solutions
So, what is observability? Well, rather than adding to the many different published definitions, I’ll point you to a few articles and pages recently published (all within the past six months) by some…
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MySQL Performance Tuning: Tips, Scripts and Tools
MySQLTuner supports Galera Cluster, TokuDB, Performance schema, Linux OS metrics, InnoDB, MyISAM, Aria, etc. – MySQLTuner on Github. You cannot replace Professional MySQL tuning with scripts. Scripts serve as essential guides, sometimes spot-on,…
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dstat command in Linux w/ examples
-y, –sysenable system stats (interrupts, context switches)–snmp-cpu–floatforce float values on-screen (mutual exclusive with –integer)–top-io-advshow most expensive I/O process (incl. pid and other stats)–qmailshow qmail queue sizes (needs qmail)–top-bioshow most expensive block I/O process…
