CNX Software - Embedded Systems News

June 24, 2012February 3, 2013 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Migrating a WordPress Blog from Apache2 to Nginx

This blog is hosted on a Linode VPS with 512 MB RAM and running Ubuntu 11.10. Up until today, Apache2 was the web server, and it worked fine except sometimes, it reached connection and memory limits, and the blog would go offline for a short period of time, especially right after a new blog post. So this week-end, I decided to switch to nginx (pronounced engine-x) web server which is said to use less memory than Apache2. Let me know if something suddenly stopped working… nginx is a relatively recent web server, and the documentation on the web seems to become outdated pretty fast, so I’ve decided to document what I’ve done. The first thing I would recommend is to try it in your own local server first, and make sure most things are working including plugins. Testing your WordPress blog with nginx in a local server I run Ubuntu […]

June 22, 2012May 29, 2017 by Jean-Luc Aufranc (CNXSoft) - 141 Comments

Ubuntu 12.04 Server ARMHF Image for Mele A1000/A2000

I’ve seen quite a few people who want to use the Mele A1000 – or its brother the Mele A2000 – media player as a server (Sacrilege!). Since recent ARM servers are running Ubuntu 12.04, and Tom Gall has (conveniently) posted the live-build config necessary to generate Ubuntu 12.04 Server image this week, I thought I’d give it a try on Mele A1000. The image generated is a headless system running Apache 2 and sshd (openssh_server). I’ll detail the steps I followed to generate this image first, so if you just want to try the SD card image, scroll down at the end of the post. The first step is to generate Ubuntu Linaro Server rootfs, by following the Live-Build instructions on Linaro website together with Tom’s live build config. I’ve followed those steps in a machine running Ubuntu 12.04. Let’s install the required packages:

sudo add-apt-repository ppa:linaro-maintainers/tools
sudo apt-get update
sudo apt-get install live-build multistrap qemu-user-static git p7zip-full

sudo add-apt-repository ppa:linaro-maintainers/tools

sudo apt-get update

sudo apt-get install live-build multistrap qemu-user-static git p7zip-full

Configure the build and […]

June 22, 2012June 22, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

VIA Announces ARM Cortex A9 Based Digital Signage System

VIA has unveiled its ARM Digital Signage (DS) system for cost sensitive high volume digital signage deployments. The system is based on an unnamed Cortex A9 processor (possibly Wondermedia WM8850?) with up to 2 GB RAM and 64 GB Flash. The company expects the device to be used in a wide range of applications such as kiosks, POS systems, video walls, menu boards to TVOIP, cloud streaming, and Out of Home Advertising. Here are the specs of this digital signage player: All in one system-ready to load software Designed for Android operating system Industry standard ARM Cortex A9 SoC Hardware acceleration of the most demanding video formats for resolutions up to 1080p DVI-D display port (HDMI Optional) 4x USB 2.0 ports 10/100 Ethernet port Audio-out/ Mic-in Up to 64GB NAND Flash Up to 2GB DDR3 SDRAM Dimension – 18 cm x 12 cm x 2.5 cm The VIA ARM DS […]

June 21, 2012 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Phoronix Designed a Solar Powered ARM Cluster with 48 Pandaboards

Michael Larabel of Phoronix did a “little” week-end project at the Massachusetts Institute of Technology (MIT), building an ARM cluster with 48 Pandaboards mostly with standard Pandaboards (OMAP 4430), although some Pandaboard ES (OMAP 4460) were also thrown in the mix. The 96-core cluster consumes just over 200 Watts under load and can be powered by a solar panel. The boards are stacked up vertically in an industrial trashcan, and are powered via USB instead of AC adapters. Michael’s PandaBoard ES testing indicates about a 3 Watt idle per board, 5 Watt under load, or 6 Watts under extreme load. The cluster idle power consumption is just under 170 Watts while idle, and goes slightly over 200 Watts under load. Each Pandaboard runs Ubuntu 12.04 ARM OMAP4 installed on SD cards. MIT did some testing and provided Phoronix with benchmark results such as tests following Green500 benchmarking procedure, but they are […]

June 20, 2012 by Jean-Luc Aufranc (CNXSoft) - No Comments

Tizen Launches Development Unit Program for Developers

The Tizen development team showcased and gave away Tizen development hardware at the Tizen Conference in May, which are similar to the Samsung Galaxy S2. If you were not present, do not despair as Tizen has just announced the launch of a Development unit program in order to make it easier for qualified developers to find available development hardware running Tizen. The 30 units currently available are only useful for Tizen developers, since they do not contain all of the features that you would expect to see in a consumer device and are only intended to developers who are building applications for Tizen. If you are a developer willing to working on Tizen Apps, you can apply for this batch until June 29 at 11:59 pm PST by filling the application form (After logging-in which appears to be impossible right now). To be eligible, you can’t work for the handset […]

Rockchip RK3568/RK3588 and Intel x86 SBCs

June 20, 2012June 26, 2012 by Jean-Luc Aufranc (CNXSoft) - 1 Comment

Freescale Announces Availability of Kinetis L Series Cortex M0+ MCU and Freedom Devkit

ARM unveiled its ultra-low power Cortex-M0+ core back in March, and Freescale and NXP also announced their plans to use this new core in some of their micro-controllers destined to power the internet of things. Yesterday at Freescale Technology Forum (FTF), Freescale announced the availability of alpha samples of its Kinetis L series. This new low power MCU family will allow existing 8-bit and 16-bit architecture to be replaced by 32-bit architecture without increasing power consumption, cost or size, and the company expects them to be used in devices such as small appliances, gaming accessories, portable medical systems, audio systems, smart meters, lighting and power control. The ARM Cortex-M0+ processor is said to consume about a third of the energy of any 8- or 16-bit processor, while delivering between two to 40 times more performance. Kinetis L series MCU can consume as low as 50 uA/MHz in very-low-power run (VLPR) […]

June 19, 2012July 17, 2012 by Jean-Luc Aufranc (CNXSoft) - 7 Comments

ARM vs x86 Servers Benchmark – Calxeda EnergyCore ECX-1000 vs Intel Xeon E3-1240

Calxeda has released the results of ApacheBench benchmark comparing their ARM-based EnergyCore solution to an Intel Xeon server in order to showcase the performance and the much lower power consumption of their servers. Here’s the setup: Hardware: Single Calxeda EnergyCore ECX-1000 @ 1.1 GHz, 4 GB of DDR3L-1066 memory, 1Gb Ethernet network port and 250 GB SATA 7200rpm HDD Intel Xeon E3-1240 @ 3.3 GHz, 16 GB memory and 1Gb Ethernet network port. No info on hard drive provided Software: Ubuntu Server v12.04 Apache Server v2.4.2 ApacheBench v2.3 (16k request size) They performed power measurements every 2 seconds and averaged the results. Power supply overhead and hard drive power consumption were not excluded in the measurement, but the entire SoC and DDR memory power consumption were included together. For the Intel server however, they could not measure directly, so they used published TDP values for the CPU (80 W) and I/O […]

Boardcon Rockchip and Allwinner SoM and SBC products