RRDTool: Difference between revisions
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Created page with "==Introduction== One wanting to log periodic data on his embedded system with a standard and robust method might be interested by the following instructions. From wikipedia:..." |
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==Usage== | ==Usage== | ||
* Check your system has the correct date/time: | |||
<pre class="apf"> | |||
# date | |||
</pre> | |||
* If not, then set it ;-) | |||
* Create the database: | |||
<pre class="apf"> | |||
# rrdtool create /data/battery.rrd --step 120 DS:cap:GAUGE:240:0:100 RRA:AVERAGE:0.5:1:1200 | |||
</pre> | |||
* Feed the script with data (XX): | |||
<pre class="apf"> | |||
rrdtool update /data/battery.rrd -- N: | |||
</pre> | |||
==Links== | ==Links== | ||
* https://oss.oetiker.ch/rrdtool/ | * https://oss.oetiker.ch/rrdtool/ | ||
Latest revision as of 12:18, 18 November 2019
Introduction
One wanting to log periodic data on his embedded system with a standard and robust method might be interested by the following instructions.
From wikipedia: "RRDtool (round-robin database tool) aims to handle time series data. The data are stored in a circular buffer based database, thus the system storage footprint remains constant over time. It also includes tools to extract round-robin data in a graphical format, for which it was originally intended. Bindings exist for several programming languages."
Installation
$ make menuconfig
...
Target packages --->
...
Graphic libraries and applications (graphic/text) --->
...
[*] rrdtool
- then reflash your rootfs
Usage
- Check your system has the correct date/time:
# date
- If not, then set it ;-)
- Create the database:
# rrdtool create /data/battery.rrd --step 120 DS:cap:GAUGE:240:0:100 RRA:AVERAGE:0.5:1:1200
- Feed the script with data (XX):
rrdtool update /data/battery.rrd -- N:
