Showing headlines posted by Scott_Ruecker

How to limit CPU usage with CPULimit on Ubuntu Linux This document describes how to limit CPU usage in Ubuntu 14.04. I will use CPU-limit utilty for this purpose. Cpulimit is a tool which limits the CPU usage of a process (expressed in percentage, not in CPU time). It is useful to control batch jobs, when you don't want them to eat too many CPU cycles. The goal of cpulimit is to prevent a process from running for more than a specified time ratio. It does not change the nice value or other scheduling priority settings, but the real CPU usage. Also, it is able to adapt itself to the overall system load, dynamically and quickly.The control of the used CPU amount is done sending SIGSTOP and SIGCONT POSIX signals to processes.All the children processes and threads of the specified process will share the same percentage of CPU.

The Open WebOS mobile Linux operating system has been renamed “LuneOS,” and is available in an “Affogato” release supporting HP’s TouchPad and LG’s Nexus 4. WebOS is back — yet again — in an open source “LuneOS” respin of the Open WebOS project, itself a spinoff of the proprietary WebOS. The WebOS Ports backed project, which was officially called “WebOS Ports Open WebOS,” released an Alpha 2 version in June 2013, and a year later announced its new project name based on the platform’s LunaSysMgr UI. The goal of LuneOS is “not to reach feature comparison with Android or iOS but rather building a system to satisfy basic needs in the mobile environment,” says the project.

Open-source advocates tend to make for rotten magicians. Whereas most illusionists insist on taking their secrets to the grave, we tend to give away the secret sauce to anyone who'll listen. Heck, sometimes we create things just so we can explain to others how they work! And, that is how this issue was born. We love the How-To concept. Heck, our entire magazine is based on the idea of spreading knowledge, and this month, we specifically go out of our way to show not only the result, but the "How" as well.

Minix is prepping a sub-$150 mini-PC running Android 4.4 on a quad-core Intel Atom Z3735F and featuring WiFi, Bluetooth, IR, Ethernet, and USB connectivity. Intel’s Atom Z37x5 system-on-chip, the second generation of its 22nm Z3000 (Bay-Trail-T) family, is beginning to appear in Android- and Windows-ready tablets such as the Toshiba Excite Go, as well as a “Sharks Cove” single board computer from Intel and Microsoft. Now we’re starting to see mini-PCs built on the tablet-focused SoC. Last week Zotac unveiled a tiny Zbox P1320 Pico computer that ships with Windows 8.1, and now Minix is prepping a Minix “Neo Z64? miniPC for those who would prefer to run Android 4.4.

Tronsmart has launched an $80-and-up “Orion R28? mini-PC that runs Android 4.4 on a quad-core, Cortex-A17 Rockchip RK3188 SoC clocked at 1.8GHz. Like Ugoos, Tronsmart has tapped Rockchip system-on-chips such as the quad-core, Cortex-A9 RK3188, which fuels its Android-ready Tronsmart T428 stick computer. Tronsmart’s latest mini-PC — the Orion R28 — advances to Rockchip’s quad-core RK3288 SoC, which uses the Cortex-A17 architecture, a faster, smaller, and more power efficient heir to the Cortex-A9. The SoC has already appeared in the Rikomagic MK902II and the Ugoos UT3 mini-PCs.

Before companies like Microsoft and Apple release new software, the code is reviewed and tested to ensure it works as planned and to find any bugs. Hackers and cybercrooks do the same. The last thing you want if you're a cyberthug is for your banking Trojan to crash a victim's system and be exposed.

Kids are back to school all over the globe! What better way to help them thrive and get the most out of school than with free and open education resources and tools?

Kali Linux has emerged in recent years to be one of the leading distribution for security penetration testers. Kali Linux includes a long list of security tools as part of the distribution enabling users to test security posture.

Fedora is a global Linux distribution, as soon as we say the word “Global”, immediately internationalization (i18n) and localization(l10n) become a utmost important part of the distribution. I would like […]

Interested in keeping track of what's happening in the open source cloud? Opensource.com is your source for what's happening right now in OpenStack, the open source cloud infrastructure project.

Intex and Spice launched the first Firefox OS phones in India using a low-cost Spreadtrum design: the $33 Intex Cloud FX and the $38 Spice Fire One Mi-FX 1. Mozilla announced two new Firefox OS phones in India that have blasted through smartphone price barriers. The two phones, which are the first in Asia to run Mozilla’s Linux- and HTML5-based Firefox OS platform, are priced at a low 1,999 Indian Ruppees ($33) for the Intex Technologies Cloud FX and $2,299 Rs ($38) for the Spice Fire One Mi-FX 1 from Spice Retail Limited. The low-end phones are about a half to a third the price of the most affordable Android phones sold in India.

LXer Feature: 31-Aug-2014

In the Roundup this week we have Mozilla's new programming language Rust, 14 Raspberry Pi projects, with the 23rd Birthday of Linux on the 25th we have some interesting facts about Linux, did Red Hat’s CTO walk or was he pushed?, what happens when a non-coder tries to learn Linux and a lot more. Enjoy!

Habey announced an enhanced replacement for Intel’s discontinued Marshalltown thin Mini-ITX board. It jumps up to a 2GHz quad-core “Bay Trail-D” Celeron. Intel introduced the Desktop Board DN2800MT (aka “Marshalltown”) in Q1 of 2012 and it’s now gone EOL according to the product’s Intel ARK page. So Habey, the California-based subsidiary of Chinese firm NORCO Intelligent Technology, has seized on the opportunity to satisfy continuing Marshalltown demand by cranking out a “drop-in replacement” board backed by an assurance of long life-cycle support.

It’s one of the most basic lessons we teach our children when they’re young—the idea of sharing their toys with others. We try to instill in them the values of giving up control and playing alongside others. Of finding joy in a shared toy. We recognize the importance of this idea, and we work hard to impress it on our young kids learning about the world.

LXer Feature: 28-Aug-2014

When the Heartbleed bug made it out into the world a few months ago I had a chance to talk to Richard Kenner of AdaCore about it. I learned a few things too, here is our interview.

Back in July we kicked-off Maker Party, our annual campaign to teach the web around the world. Throughout  this two-month campaign we have seen people on nearly every continent  increase their web literacy by writing their first line of code, … Continue reading

I'm a big fan of Scott Nesbitt's writing, which has a technological bent, but is usually more about working effectively, rather than how tools can make you effective, which is a key distinction. Scott's setup reflects his focus on production rather than tweaking. He has his work tools and everything else is pretty much white noise—which is why LXDE/Lubuntu probably makes a lot of sense for his workflow.

Extreme Engineering Solutions announced two rugged Linux-ready modules based on Intel E3800 SoCs, including one built in the tiny COM Express Mini format. Extreme Engineering Solutions (“X-ES”) is rolling out two nearly identical computer-on-module products: the “XPedite8150? conforms to the tiniest (84 x 55mm) COM Express Mini form-factor, while the “XPedite8152? adopts a somewhat larger 109 x 55mm “COM Express Extended Mini” format. Both COM models are offered with a choice of Atom system-on-chips, including the E3845, E3827, E3826, E3825, or E3815. However, the E3845 is standard, says X-ES.

VMware has outlined a new way to do desktop virtualisation (VDI) that aims to greatly reduce the amount of storage required to deliver desktops from the data centre. Many current VDI arrangements require each virtual desktop to be stored as a discrete virtual disk. By the time organisations get to hundreds or thousands of such disks, that adds up to a hefty storage requirement and all sorts of network fun around 9:00 AM when everyone arrives at work and logs on. The cost and complexity of all that kit makes VDI too pricey for many and too hard for others.

I started writing for Linux Journal as a contributing editor in 1996 (here's one piece), and went full-time 1998, not long before I began co-writing The Cluetrain Manifesto with Chris Locke, David Weinberger and Rick Levine. The Cluetrain website went up in March 1999, and we finished writing the book at the end of August 1999. The book was published in January, 2000, and a tenth anniversary edition arrived in 2009. But the last words of the original were written fifteen years ago this month.