expatiari expatria

Category: geek

Git Linear Performance

I seem to remember Git scaling poorly and years ago vowed never to contemplate a repository larger than 4 Gigs. Under the cobwebs of my memory I recall failure to pack and clean anything larger on a 32-bit machine. Well, anyway, I’ve just created a dozen repos from 20M-3G on the same machine (HP Pavilion, [...]

How does RAID-5 work?

Suppose you have multiple disks and you are concerned about loosing data. Well, it’s always a good idea to archive your data at a different location so that you can retrieve data from history even after a catastrophy such as fire or theft. But what about real-time protection against corruption and disk failure? We could [...]

Minimal HTML5

<!doctype html><html lang=”en”><head><meta charset=”UTF-8″ /><link rel=”license” href=”http://genaud.net/2011/poetic-license.txt” /> <title></title> </head><body><time pubdate datetime=”2011-02-01T10:00:00-03:00″></time> Hello World </body></html></html> And the header for XHTML 5: <?xml version=”1.0″ encoding=”utf-8″?> <html xmlns=”http://www.w3.org/1999/xhtml”><head>

Fahrenheit vs. Celsius

Banging out a quick chart with Google Chart Tools was pretty easy, but tweaking it to look just right seemed to be beyond me. I’m more likely to use Google’s chart for the first draft and touch it up in some other editor. For example, I found it difficult to align the tick marks, grid, [...]

Meter per degree longitude

Spurred by a mnemonic game while hiking in both fog and mountains, I am now trying to memorize GPS coordinates. But just how many of those little digits must I keep in my head? How big is a degree of longitude anyway? Naively, we can divide the 40 megameter earth circumference by 360° and divide [...]