News & Tutorials

The ideal value of listen.backlog when setting PHP-FPM pm = ondemand

I recently wrote about the impact that setting how PHP-FPM’s process manager controls child processes from dynamic (pm = dynamic) to ondemand (pm = ondemand) has on RAM usage. You may read the article at How to reduce PHP-FPM (php5-fpm) RAM usage by about 50%. One other interesting PHP-FPM setting I got to learn a little bit more about while […]

How to reduce PHP-FPM (php5-fpm) RAM usage by about 50%

PHP-FPM is the FastCGI Process Manager for PHP. On Unix-like operating systems, including Linux and BSD distributions, PHP-FPM is enabled by installing the php5-fpm (Linux) or php56-fpm (FreeBSD 10.1) package. The problem with PHP-FPM is that the default configuration and that promoted by numerous blogs chews up too much resources – RAM and CPU. The server that powers this blog […]

For an editor, Atom uses way too much RAM

For an editor, Atom uses way too much RAM

For some time now I’ve been using Atom as a replacement for Kate, KWrite and GEdit, depending on the desktop environment I’m using. That’s because it’s much easier and faster to take notes when you’re formatting with MarkDown. If you’ve never heard about Atom, it’s a text editor from the folks at GitHub and officially described as a “hackable text […]

How to configure Ubuntu 14.04 server to forward root mails to your email address

This short tutorial shows how to configure a Ubuntu 14.04 Cloud server to forward system-generated mails sent to the root account to your email address. Why would you want to forward mails sent to root to an email address? Because most properly-configured Cloud servers are managed using a (normal) user account with sudo (root) privileges. So unless you switch to […]

What I can say about KDE Plasma 5 that I can’t say about Windows 8

What I can say about KDE Plasma 5 that I can’t say about Windows 8

I’ve never really had the time to explore KDE Plasma 5 since it was released back in July 2014. I’ve played with it a bit, but not much. Now that it’s at version 5.2 and at that stage when its deemed almost ready for primetime, that is, ready to replace all aspects of KDE Plasma 4, I decided to kick […]

Calamares will be the graphical installer on the next OpenMandriva edition

Calamares will be the graphical installer on the next OpenMandriva edition

News from OpenMandriva has it that the next release of the distribution will feature the Calamares graphical installer. Calamares is a “distribution independent installer framework” that features a modular design with 25 modules already implemented. It has plugin interfaces for C++, Python and a generic process, and an advanced partitioning tool with support for DOS and GPT partition tables. It […]

Why did this server run out of disk space?

Less than two hours after I logged into the admin end of this website, which is powered by WordPress, the site went offline, with a 502 Bad Gateway error. What the…? So I logged in via ssh and noticed a serious lag between when I type a letter and when it appears on the screen. I’ve got a problem. And […]

Getting to know the pkg audit command on PC-BSD and FreeBSD

If you’re new to FreeBSD and PC-BSD, you might not yet be aware of all their package manager’s many commands. Nobody expects you to, at least not initially. Pkg is that package manager and one of the its many commands I think you should get to know asap is the audit command. It’s used to audit installed packages against known […]

Raspberry Pi 2 vs Creator 120

Raspberry Pi 2 vs Creator 120

The Creator 120 and the Raspberry Pi 2 are single-board computers designed for developers and hobbyists. The Creator C120 was announced in late 2014, but started shipping at about the same time that the Raspberry Pi 2 was announced/starting shipping, which was just last week. I haven’t purchased a Raspberry Pi 2 yet, but I received a Creator 2 from […]

MIPS Creator C120 development board and Debian 7

MIPS Creator C120 development board and Debian 7

Back in December 2014 I won a Creator C120 single board computer from Imagination Technologies, a technology outfit based in Hertfordshire (UK). The Creator C120 is a development board for Linux and Android. It’s powered by a dual-core MIPS32 CPU (1.2 GHz) and a PowerVR SGX540 GPU. Add to that 1 GB of RAM, 8 GB NAND Flash, two USB […]

Two things I’ve learned from using Tor Browser

Two things I’ve learned from using Tor Browser

So for the past three months I’ve been using Tor Browser to surf the Web, not as a primary browser, but as a secondary browser. Firefox is my primary browser. Together with using StartPage as my search engine, I feel much better about my privacy while surfing the Internet. Using Tor Browser leads to a tad slower browsing experience, but […]

These reCAPTCHAs where not meant to be read by humans

These reCAPTCHAs where not meant to be read by humans

A reCAPTCHA is supposed to make business tough for bots yet easy for humans to decipher. But we all know how annoying those things can be – for humans. That has led to some not too successful attempts to make them less so. A more recent effort is No CAPTCHA reCAPTCHA, but it didn’t really solve the problem that it […]

Tip for dual-booting Windows 10 preview and Linux on a PC with UEFI firmware

Tip for dual-booting Windows 10 preview and Linux on a PC with UEFI firmware

Windows 10 Technical Preview is the beta version of what will become Windows 10, a major revision of Microsoft’s operating system. It is being planned for release in the second quarter of this year, but if you sign up as a Windows Insider Program, you can download an ISO image, which weighs in at about 3.9 GB, transfer it to […]

How to install the latest OpenSSH on Windows 7 and Windows 8

How to install the latest OpenSSH on Windows 7 and Windows 8

Occasionally I have to run an installation of Windows 7 or Windows 8 on one of my computers, which means having to copy files between it and the Linux computers on the network. That’s when I realize how difficult it can be to use a default installation of Windows, especially from its command prompt (line), where I tend to spend […]

The most affordable FreeBSD-supported Cloud/VPS hosting providers

Looking for a Cloud/VPS hosting provider that supports FreeBSD? Your search is more than half way done. That’s because I have gone through the official list of ISPs that support FreeBSD and come up with the most affordable ones, plus one that’s not on that list. The result is given in the table below. The cheapest service is TransIP, which […]

Your choice of NTP applications in Linux

Your choice of NTP applications in Linux

The official definition of NTP (Network Time Protocol) says that it is a “protocol designed to synchronize the clocks of computers over a network.” To participate in that synchronization of clocks, a computer must be running either an NTP daemon (server) or an NTP client. A computer providing NTP services to other computers is an NTP server, while the one […]