[rrd-users] RRA of unaltered data

[Thomas Nilsson]

My shell script:
----
./rrdtool create test2.rrd \
            --start now --step=5 \
            DS:ok:GAUGE:10:0:100 \
            RRA:LAST:0:1:10

for i in 2 20 4 40 6 60 8 80 10 100
do
  sleep 5
  ./rrdtool update test2.rrd -t ok N:$i
  echo "Updated DS \"ok\" with value $i"
done

./rrdtool dump test2.rrd
----

Wen I run my script it output this:

Updated DS "ok" with value 2
Updated DS "ok" with value 20
Updated DS "ok" with value 4
Updated DS "ok" with value 40
Updated DS "ok" with value 6
Updated DS "ok" with value 60
Updated DS "ok" with value 8
Updated DS "ok" with value 80
Updated DS "ok" with value 10
Updated DS "ok" with value 100
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE rrd SYSTEM "http://oss.oetiker.ch/rrdtool/rrdtool.dtd">
<!-- Round Robin Database Dump -->
<rrd>
       <version>0003</version>
        <step>5</step> <!-- Seconds -->
        <lastupdate>1448379137</lastupdate> <!-- 2015-11-24 16:32:17 CET -->

        <ds>
                <name> ok </name>
                <type> GAUGE </type>
                <minimal_heartbeat>10</minimal_heartbeat>
                <min>0.0000000000e+00</min>
                <max>1.0000000000e+02</max>

                <!-- PDP Status -->
                <last_ds>100</last_ds>
                <value>2.9769000000e+02</value>
                <unknown_sec> 0 </unknown_sec>
        </ds>

        <!-- Round Robin Archives -->
        <rra>
                <cf>LAST</cf>
                <pdp_per_row>1</pdp_per_row> <!-- 5 seconds -->

                <params>
                <xff>0.0000000000e+00</xff>
                </params>
                <cdp_prep>
                        <ds>
                        <primary_value>4.6702324000e+01</primary_value>
                        <secondary_value>0.0000000000e+00</secondary_value>
                        <value>NaN</value>
                        <unknown_datapoints>0</unknown_datapoints>
                        </ds>
                </cdp_prep>
                <database>
                        <!-- 2015-11-24 16:31:30 CET / 1448379090 --> <row><v>2.0000000000e+00</v></row>
                        <!-- 2015-11-24 16:31:35 CET / 1448379095 --> <row><v>9.6584168000e+00</v></row>
                        <!-- 2015-11-24 16:31:40 CET / 1448379100 --> <row><v>1.3225379200e+01</v></row>
                        <!-- 2015-11-24 16:31:45 CET / 1448379105 --> <row><v>1.9166821600e+01</v></row>
                        <!-- 2015-11-24 16:31:50 CET / 1448379110 --> <row><v>2.5747227200e+01</v></row>
                        <!-- 2015-11-24 16:31:55 CET / 1448379115 --> <row><v>2.8526251200e+01</v></row>
                        <!-- 2015-11-24 16:32:00 CET / 1448379120 --> <row><v>3.8413156800e+01</v></row>
                        <!-- 2015-11-24 16:32:05 CET / 1448379125 --> <row><v>3.7715062400e+01</v></row>
                        <!-- 2015-11-24 16:32:10 CET / 1448379130 --> <row><v>5.1284544000e+01</v></row>
                        <!-- 2015-11-24 16:32:15 CET / 1448379135 --> <row><v>4.6702324000e+01</v></row>
                </database>
        </rra>
</rrd>

RRDtool 1.5.5  Copyright by Tobias Oetiker <tobi at oetiker.ch>
               Compiled Nov 24 2015 16:14:27

Questions
1. Is there a way to get the values I add to show up unaltered in the RRA?
   Tried with LAST, AVERAGE, MIN and MAX in the RRA declaration.

2. How are the values in my RRA calculated?

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