Raspberry Pi: Raspian disadvantages of embedded OS

The last 12 month have been a „golden“ time of the upcomming embedded linux devices, but the custom OS’s offers some problems, you should know for projects:

  • embedded PC’s like the ARM based pi2 / pi3 uses a own compiled OS
  • not every known debian package is available
  • not all compile scripts to rebuild are available on git
  • slow performance can let you run into unuseable problems (heat, load, I/O), correct written scripts run into freezes without any error made by you!
  • you should take time for a closer look at buying them
  • calc the costs of non-x86 systems, later you cant often upgrade, cause embedded systems are not made for
  • dealers take too much money for less performance!
  • embedded devices can’t be grown up for additional precs like compression based on chips!
  • embedded devices need less energy, but can hangup by load over 65%, cause no cooling
  • the are made for learning and small control jobs
  • for NAS / Server jobs take x86 m-atx / micro-atx, cause you can access easy full debian packages
  • not all python + libs packages are available to run projects (example: acd_cli amazon cloud nas backup)
  • current embedded pc livetime at multimedia usage may be 24month cause to much and faster changes

May be that the arm os package trees may grow up, then we can talk again, but current x86 is the cheapest way to build systems without stress! And you have always the reserve to buildin new things of hardware..

Linux Green IT: Basics to save Energy and Resources

Problem: Every User today read a lot of articles on the Net about Green-IT, but the basics are often forgotten!

Background:

  1. Current Office PCs and Servers need a lot of Energy at the Offices
  2. Current and new Operating Systems need more and faster Hardware
  3. The Industries blow up Applications and Online Webpages with animated Applets you never need
  4. Current Hardware produce more and more heat, which you have to cool

 


If you want to go the right way at your IT Future then do remark these points:

  1. Plan your IT Future detailed !!!!
  2. Make a sheet of all needed Software Applications you want to use daily
  3. Go online, search for the manufacter detailed Datasheets of Hardware and check them for power, noise and heat values, if not detailed offered the DONT BUY IT !!
  4. Buy your low powered, cool and low noise Hardware
  5. Create a Testing System PC or Server and check the real data against datasheets for power, noise and heat with equipment tools, if there are wrong values then send it back to reseller !!
  6. Remove unneeded Hardware Parts, like CDROM, PCI Cards,Wireless Cards… everything needs power
  7. Now take a closer look at your needed Software for installed size on disk, ram usage, licence costs
  8. Search for smallest replacements of your used Software, don’t install it or remove unneeded parts
  9. You don’t need a big Office Software Package (up to 4000MB Data ) to type Letters or eMails daily
  10. Green IT Basic is use a smallest count of „Bits and Bytes“
  11. On Linux install a „netinstall“ System with smallest Size
  12. Install a light Window Desktop Manager without any animations!
  13. Check Ram Usage, remove unneeded Packages
  14. If you can recompile Applications without unneeded Modules
  15. Removing unneeded Applications and Widgets tune up Speed and Security

Green IT Convention:  „Green IT is the Science and Know How to reduce the Code lines of Computer Applications“

Small Linux on Thin Client 32MB Disk

Problem: If you have bought a Thin Client Terminal, you lost updates after some years, cause the manufacter closes the support, or you have to pay for the Upgrades.

Solution:
To reuse the old Hardware take a closer look on www.tinycorelinux.com There you find a very small modular Linux. You must not buy new Hardware! Tinycorelinux runs on x86 (Intel/AMD/Via) Hardware with a current 2.6 Kernel inside a RAMDISK.

 

Preferred Applications:

  • Kiosk Internet Box
  • Internet Radio
  • Netbook with full ThinClient Support for High Security Travel (Company’s)
  • Internet PC
  • Office PC
  • Fast energy saving embedded PC with ramdisk Use
  • SSH Terminal
  • Embedded Server (NAS+FTP)
  • PC controlled Info-Screens like Store, Hotel or Airport TFT Info Screens
  • Embedded Tablet PCs

Tinycorelinux is easy to setup and offer good documentations about config and application setup.

The requirements:

  • x86 CPU
  • 32MB> Diskspace
  • Support Intel,AMD and Via CPU (Samuel 2 too, no cmov reboot bug)
  • Support various kinds of media, USB Stick, FlashDisk, IDE and SATA-HDD, CDROM
  • embedded S3 Via Graphic supported
  • must have internet access to get additional software packages called modules

Must know:

At first read the howtos about the different kernel boot switches cause here you set parameters for the Linux on RAM.

for example:

tinycore user=tom vga=791 hdc1=home sda1=tce secure noautologin kmap=qwertz/latin-1 lang=de

  • user= set the used username (default=tc)
  • vga= enable framebuffer on screens
  • hdc1= set a usbdisk plugged in to home
  • sda1= set a usbstick to save installed programs like firefox
  • secure= ask on boot for user + root password (must be)
  • noautologin= stop at login prompt (Console)
  • kmap set keymap (for German install kmap paket, if  not US is forced)
  • lang= set language  (for other language install lang paket, if not US is forced)