History

Marios Andreopoulos 908810e506 note about mled-iowaitdetailed		2013-02-21 06:45:35 +02:00
..
mled-cputemp	Renamed file	2013-02-20 03:37:45 +02:00
mled-discomode	initial commit	2013-02-20 03:38:21 +02:00
mled-iowait	complete rewrite, based on iostat instead of /proc/stats, gives more interactive and detailed feedback	2013-02-21 04:25:06 +02:00
mled-iowaitdetailed	initial commit	2013-02-21 04:36:16 +02:00
README.md	note about mled-iowaitdetailed	2013-02-21 06:45:35 +02:00

README.md

Bash Scripts

I teared the notifier apart and placed the notifier's board inside my home server. Due to its size, the RGB LED creates some interesting optical effects if you place it 2-4cm behind the venting holes.

Here are some simple scripts that use various data to set the LED's color.

mled-discomode

This script simply cycles through all available colors. I called it disco mode due to the optical phenomena that take place as the light crosses the air vents.

mled-cputemp

This script works really well for my machine. It uses the sensors program to get the CPU temperature.

If the CPU is at or under the low threshold, the LED turns blue. If it is at or above the high threshold, the LED turns red. If it is in the middle, it gets green.

It is actually very informative for the machine's state. You can easily detect CPU load.

mled-iowait, mled-iowaitdetailed

My home server doesn't have any LEDs for HDD activity, though it has plenty of HDDs. These two scripts attempt to make up for this shortcoming when I need some quick profiling of the machine. They actually work better than common HDD activity LEDs because they are based on iowait percentage in one second periods (adjustable).

mled-iowait has 3 levels, so you get only to set a low and a high threshold. mled-iowaitdetailed has 6 levels of activity, so you can set 5 thresholds. Also below the lowest threshold, it sets the notifier to off, which turns to be a good approach.