Update July 19th 2018: Now 85% as per latest report. No, I didn’t use a misleading blog title. Smartphones powered by Linux are in fact dominating the smartphone market. A few of you may be scratching your heads at this point (stop that, you’ll go bald) while others are filled with that Sound of Music […]
Linux top: Here’s how to customize it
July 17, 2018 by Hayden James, in Blog LinuxThe 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
June 30, 2018 by Hayden James, in Blog LinuxAs 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
June 25, 2018 by Hayden James, in Blog LinuxToday’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
June 21, 2018 by Hayden James, in Blog LinuxTL;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 […]
PHP 5.6 EOL (End of Life) – PHP 7 Compatibility Check
June 20, 2018 by Hayden James, in Blog LinuxSummary: PHP 7.3 promises to be up to 25% faster than PHP 7.0 – Check your PHP scripts/apps for PHP 7 compatibility – Upgrade to PHP 7 ASAP – Confirm OpCache is enabled/monitored – some php.ini optimization tweaks. PHP 5.6 was first released back in 2014, with alpha 1 released in January 2014. Due to major performance improvements (phpng then […]
htop and top Alternatives: Glances, nmon
June 15, 2018 by Hayden James, in Blog LinuxPreviously we took a look at top, atop and indirectly (due to it’s popularity as top’s alternative) htop (the last screenshot on this page). But are there other alternatives worth looking at? As it pertains to system health and performance, this is largely a matter of preference regarding what data is most important to you. We […]
atop for Linux server performance analysis, here’s how
June 11, 2018 by Hayden James, in Blog LinuxWe’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?
June 6, 2018 by Hayden James, in Blog Guest Post LinuxGuest 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 […]
Analyze Your Website’s TTFB (Time to First Byte)
February 19, 2018 by Hayden James, in Bookmarked Linux UpdatesI’ve been using online services to analyze TTFB (time to first byte) or TTFB check using curl command line. High TTFB will often cause your page loads to be mysteriously slow or at the very least increase the latency between page loads. You should check to see if your TTFB is a performance issue or not. Try […]