Tutorials/Tips

Dual-boot Linux Mint 17.1, Windows 7 on a PC with UEFI firmware

Dual-boot Linux Mint 17.1, Windows 7 on a PC with UEFI firmware

After Linux Mint 17 was released back in mid-2014, I published How to dual-boot Linux Mint 17 and Windows 8 on a PC with UEFI firmware. Now that Linux Mint 17.1 has been released, it seems that many users are stumbling in their attempt to use the tutorial to dual-boot it and Windows 8 on a computer with UEFI firmware. […]

February 27, 2015 · 40 comments · Mint, Tutorials/Tips

Configure OSSEC to not email alerts on IPTables denied messages

The tl;dr of this article is: It shows how to configure OSSEC, a host-based intrusion detection system, to not send email alerts whenever IPTables rejects or denies a traffic source. The more detailed form follows. So I use OSSEC to monitor and protect my cloud servers, which gives me a lot of confidence because OSSEC keeps me informed about what’s […]

February 26, 2015 · 0 comments · Tutorials/Tips
How  to delete Superfish from Lenovo computers permanently

How to delete Superfish from Lenovo computers permanently

So Lenovo has been reeling from the self-inflicted wound called Superfish, VisualDiscovery or WindowShopper. No sympathies from me, buster. What else have you done in the past that nobody found out? If you have no idea what Superfish is, here’s a very brief summary. Superfish is an adware installed on some Lenove consumer computers. The actual name is WindowShopper or […]

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 […]

February 17, 2015 · 8 comments · Tutorials/Tips
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 […]