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Showing posts with label utility. Show all posts
Showing posts with label utility. Show all posts
Friday, July 19, 2013
Tuesday, October 30, 2012
Performance tuning : Swappiness
I got my linux pc was slowing down because of swap. Then, I checked in htop, oh, my main memmory was about 1.5 GB left (totally 4 GB). Why swap was allocated util main memory was 85 or 90%? I ask a help from my senior. He said to google "Swappiness". I found one of the solutions and did as they said. Now, I am ok. I set vm.swappiness = 10 and rebooted. Check detail: http://unixfoo.blogspot.com/2007/11/linux-performance-tuning.html
Monday, October 1, 2012
Vesa Linja-ahon blogi: A group of Finnish math teachers write an open tex...
Vesa Linja-ahon blogi: A group of Finnish math teachers write an open tex...: A group of Finnish mathematics researchers, teachers and students write an upper secondary mathematics textbook in a booksprint. The event s...
Link from: http://science.slashdot.org/story/12/09/29/2158225/teachers-write-an-open-textbook-in-a-weekend-hackathon
Link from: http://science.slashdot.org/story/12/09/29/2158225/teachers-write-an-open-textbook-in-a-weekend-hackathon
Friday, September 28, 2012
Blue LED Cube
The amazing article :).
This is exactly what it sounds like, an awesome flashing cube of LED's. After seeing a 512 LED cube on hackaday I decided that I needed one for myself and went right to ebay to find some cheap LED's. Although 512 LED's seems like a daunting number it only took one weekend to make the control circuit and construct the cube, the code and animations though took a few weeks, maybe coding isn't my thing. I will go through some of the steps and theory here and you can see the results in the video at the end.
Read more full article here: http://www.hownottoengineer.com/projects/lc.html
This is exactly what it sounds like, an awesome flashing cube of LED's. After seeing a 512 LED cube on hackaday I decided that I needed one for myself and went right to ebay to find some cheap LED's. Although 512 LED's seems like a daunting number it only took one weekend to make the control circuit and construct the cube, the code and animations though took a few weeks, maybe coding isn't my thing. I will go through some of the steps and theory here and you can see the results in the video at the end.
Read more full article here: http://www.hownottoengineer.com/projects/lc.html
Monday, September 17, 2012
Generate SSL self-signed certificate and key, enable https encryption in web2py | Recipe | Web2py Slices - Recipes, Tutorials, Code, Questions
Nice article and nice work. For web2py devs who need SSL. It will automatically generate .crt and .key files. Then, if you gonna run web2py, just add -c generated.crt -k generated.key arguments.
Generate SSL self-signed certificate and key, enable https encryption in web2py | Recipe | Web2py Slices - Recipes, Tutorials, Code, Questions
Generate SSL self-signed certificate and key, enable https encryption in web2py | Recipe | Web2py Slices - Recipes, Tutorials, Code, Questions
Saturday, June 23, 2012
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