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Linksys NSLU2
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RTC on Capacitor for ALIX
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Mirabox vs GuruPlug
Elastic Binary Trees

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HAProxy 1.5-dev17 (dev)
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> News

-- Feb 24th, 2013
Added the article on the Mirabox.

-- May 30th, 2010
Added the articles on the death of the Guruplug Server Plus.

-- Dec 29th, 2007
Added the articles on how to build an UPS for ALIX and how to enable short-term RTC time-keeping using a capacitor.

-- Nov 19th, 2006
Added the Load Balancing article.

-- Oct 8th, 2006
Added the Linux/NSLU2 article.

> Articles

Here are a few articles that I have written on various subjects. Most of them are between publications and reviews. When I have gathered enough of them, I will classify them in categories.

  • Hacking the Linksys NSLU2 : Originally, this is a small cheap NAS server costing around $100. It runs Linux on a StrongARM processor and has one 10/100 Mbps interface. It's easy to mod it for various usages.
  • Making applications scalable with Load Balancing : An article I wrote for a magazine in mid-2006 but which finally was not published because it was slightly out of the magazine's scope. When I have time, I'll make it as a whole PDF.
  • How to build a cheap UPS for PC Engines ALIX : The ALIX is a very nice motherboard designed by PC Engines. This article explains how to build a cheap UPS for this motherboard.
  • How to add a capacitor to keep RTC running on PC Engines ALIX : The ALIX is a very nice motherboard designed by PC Engines. This article explains how to use a capacitor for time-keeping instead of a lithium battery.
  • GuruPlug Server Plus : don't waste your money on it! : The GuruPlug Server Plus from GlobalScale at first glance appears to be a nice server for home usage. However, it suffers from extremely poor design, heats so much that it hurts when you touch metal parts, it is slower than an ALIX, and its half-baked Linux installation does not help at all.
  • Elastic Binary Trees (ebtree) : a new type of binary trees I have been working on for several years, which features some unique characteristics and has now become pretty stable and usable.
  • Mirabox: much better than GuruPlug : After the total design failure that the GuruPlug Server Plus was, GlobalScale proposes a really clean ARMv7 box : the Mirabox. It is the cleanest board I have ever seen and is based on Marvell's Armada370 SoC. It still suffers a lot from a terrible lack of information from Marvell, but the kernel sources were very recently published, making development slightly easier. I had bricked it for 2 months due to this lack of info, but managed to unbrick it so I'm sharing the procedure. I really hope that Marvell will understand that publishing datasheets helps their design being adopted in the IT world, because at the moment, users have to either use the shipped bogus kernel, or be developers. Anyway it's worth affording it, it's a really nice little box.

> Various links

  • www.nslu2-linux.org/ : the official site about Linux on NSLU2.
  • pcengines.ch/alix.htm : the ALIX motherboards at PC Engines.
  • haproxy.1wt.eu/ : HAProxy, the Reliable, High Performance TCP/HTTP Load Balancer
  • ALOHA : a commercial implementation of HAProxy in a fast and robust appliance.

> Contacts

  • Contact me : spacer Willy TARREAU
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