LinuxQuestions.org - Uncategorized

This blog is about the development of my various Linux based web sites, starting with raspberrywebserver.com, Banoffee Pi Server and Linux Web Servers.

Uncategorized Entries with no category

Testing Varnish Cache on an Odroid U2

Posted 10-22-2013 at 01:05 AM by Pyplate

I've fixed the issue with my Odroid freezing. The kernel update fixed that.

I also got Varnish to work. Most of the documentation I found for Varnish refers to an earlier version, but it seems that the latest version has changed a lot, in particular there have been a lot of changes to the Varnish Configuration Language. Fortunately the Varnish compiler gives excellent error messages which tell you how to fix the problems it encounters.

I often make changes to pages...

Pyplate

LQ Newbie

Posted in Uncategorized

Views 954 Comments 0 Pyplate is offline

Tuning Odroid U2 headless server

Posted 10-19-2013 at 05:18 AM by Pyplate

I've been working on my Odroid U2. It has a quad core Cortex A9 ARM SoC running at 1.7GHz, and 2GB of RAM. I've set up Apache and installed a copy of my web site. I set up Varnish Cache and I'm running tests to see how much of a performance boost I'm getting.

I had some issues with the Odroid hanging every few hours. I installed a new kernel and so far it's been up for 18 hours. I'm using a 16GB class 4 micro SD card. I might try using a class 10 card to see if it performs...

Pyplate

LQ Newbie

Posted in Uncategorized

Views 1149 Comments 0 Pyplate is offline

On Site Optimization

Posted 10-16-2013 at 07:32 AM by Pyplate

I've written a post about site some of the techniques I used to optimize my Raspberry Pi site.

I've minified Javascript, re-arranged CSS, and adjusted the way Javascript files are loaded. Google Analytics shows a pretty good improvement in page load times. There's still a lot more optimization to do, but I think I've made a good start.

I'm also working on setting up an Odroid U2 as a high speed web cache. So far I've installed Xubuntu, got my site running in Apache...

Pyplate

LQ Newbie

Posted in Uncategorized

Views 863 Comments 0 Pyplate is offline

Raspberry Pi temperature logger written in Python

Posted 09-24-2013 at 04:45 PM by Pyplate

Tags ds18b20, python, raspberry pi, sqlite

I wrote a Python script to read temperatures from a DS18B20 and log the temperatures in an SQLite database. I used Google charts to display data from the database in a chart on a web page. You can see how I set this up here: http://raspberrywebserver.com/cgiscr...rature-logger/

Pyplate

LQ Newbie

Posted in Uncategorized

Views 2189 Comments 0 Pyplate is offline

Using SQLite on a Raspberry Pi

Posted 09-06-2013 at 07:54 AM by Pyplate

I've written an article on my site about using SQLite on a Raspberry Pi. I've only covered the bare essentials, but it's enough to get started.

I've used examples based on a database that could be used to log temperatures. I've already covered the use of a DS18B20 sensor, so I may as well build a temperature logging system.

Pyplate

LQ Newbie

Posted in Uncategorized

Views 1302 Comments 0 Pyplate is offline

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