Chubbard at 18:10, 29 May 2023

2023-05-29T18:10:42Z

← Older revision		Revision as of 11:10, 29 May 2023
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	* http://rrdtool.vandenbogaerdt.nl/tutorial/rrdcreate.php		* http://rrdtool.vandenbogaerdt.nl/tutorial/rrdcreate.php
	* https://apfelboymchen.net/gnu/rrd/create/		* https://apfelboymchen.net/gnu/rrd/create/
			* https://lpar2rrd.com/max_vrs_average.php

	DST when to use (Data Storage Type)		DST when to use (Data Storage Type)

Chubbard at 17:50, 29 May 2023

2023-05-29T17:50:57Z

← Older revision		Revision as of 10:50, 29 May 2023
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	saves 1 year in 6-hour resolution (1460 * (300*72/60) / 60/24)		saves 1 year in 6-hour resolution (1460 * (300*72/60) / 60/24)
	</pre>		</pre>

			Drive is cheap. Something to think about:
			* A database with one data source holding three years in 5-minute resolution is only 2.5 MB
			* HOWEVER, rendering many of these can get ugly!

	[[Category:rrd]]		[[Category:rrd]]

Chubbard: Created page with "=== Rrdtool create commands and details === * http://rrdtool.vandenbogaerdt.nl/tutorial/rrdcreate.php * https://apfelboymchen.net/gnu/rrd/create/ DST when to use (Data Storage Type) * GAUGE The input is a rate, e.g. m/s, or should be treated as a rate, e.g. temperature * COUNTER The input is an ever increasing number, e.g. an octet counter in a router. RRDtool should compute the difference between the last update and the current one, and divi..."

2023-05-29T17:48:56Z

Created page with "=== Rrdtool create commands and details === * http://rrdtool.vandenbogaerdt.nl/tutorial/rrdcreate.php * https://apfelboymchen.net/gnu/rrd/create/ DST when to use (Data Storage Type) * GAUGE The input is a rate, e.g. m/s, or should be treated as a rate, e.g. temperature * COUNTER The input is an ever increasing number, e.g. an octet counter in a router. RRDtool should compute the difference between the last update and the current one, and divi..."

New page

=== Rrdtool create commands and details ===
* http://rrdtool.vandenbogaerdt.nl/tutorial/rrdcreate.php
* https://apfelboymchen.net/gnu/rrd/create/

DST when to use (Data Storage Type)
* GAUGE
The input is a rate, e.g. m/s, or should be treated as a rate, e.g. temperature
* COUNTER
The input is an ever increasing number, e.g. an octet counter in a router. RRDtool should compute the difference between the last update and the current one, and divide it by the amount of time lapsed.
* DERIVE
This is similar to COUNTER, except that the input can decrease. This is useful for instance in a kWh meter when you produce more solar power than you use. In that case you actually do get a negative rate.
* ABSOLUTE
This is to be used when the counter is reset every time it is read, when people start counting from zero, and so on. The main difference between ABSOLUTE and GAUGE is that the input is not yet a rate, it
should first be divided by time to get a rate. The main difference between ABSOLUTE and COUNTER is that RRDtool should not use the previous input value to compute its delta.

<pre>
ds-name ds0 one of the counters
DST COUNTER Data Source Type
heartbeat 600 Those 10 minutes
min 0 Rate no less than 0
max 12500000 Rate no more than 12,500,000 bytes per second, which is 100,000,000 bits per second

The other counter is just the same, except for its name. Give the following to rrdtool create:
DS:ds0:COUNTER:600:0:12500000
DS:ds1:COUNTER:600:0:12500000
</pre>

Legit shell command to create above:
<pre>
rrdtool create database.rrd \
DS:ds0:COUNTER:600:0:12500000 \
DS:ds1:COUNTER:600:0:12500000 \
RRA:MIN:0:360:576 \
RRA:MIN:0:30:576 \
RRA:MIN:0:7:576 \
RRA:AVERAGE:0:360:576 \
RRA:AVERAGE:0:30:576 \
RRA:AVERAGE:0:7:576 \
RRA:AVERAGE:0:1:576 \
RRA:MAX:0:360:576 \
RRA:MAX:0:30:576 \
RRA:MAX:0:7:576
</pre>

Another breakdown of create
<pre>
rrdtool create download.rrd \
--step 300 \
DS:inet_down_total:DERIVE:600:0:U \
DS:inet_down_comp1:DERIVE:600:0:U \
DS:inet_down_comp2:DERIVE:600:0:U \
DS:inet_down_other:DERIVE:600:0:U \
RRA:AVERAGE:0.5:1:288 \
RRA:AVERAGE:0.5:3:672 \
RRA:AVERAGE:0.5:12:744 \
RRA:AVERAGE:0.5:72:1460

creates a database that

is updated every 5 minutes
has for data sources that that can save values from 0 to unlimited
saves 1 day in 5-minute resolution (288 * (300*1/60) / 60/24)
saves 1 week in in 15-minute resolution (672 * (300*3/60) / 60/24)
saves 1 month in 1-hour resolution (744 * (300*12/60) / 60/24)
saves 1 year in 6-hour resolution (1460 * (300*72/60) / 60/24)
</pre>

[[Category:rrd]]

Rrdtool create - Revision history

Chubbard at 18:10, 29 May 2023

Chubbard at 17:50, 29 May 2023