<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_1_1441833424464_4196">Hello there,</div><div id="yui_3_16_0_1_1441833424464_4292"><br></div><div dir="ltr" id="yui_3_16_0_1_1441833424464_4198">I'm a little lost here and I'm not use what I missing in the documentation to solve it.</div><div id="yui_3_16_0_1_1441833424464_4212" dir="ltr"><br></div><div id="yui_3_16_0_1_1441833424464_4262" dir="ltr">I created a RRDTool database with the following command:</div><div id="yui_3_16_0_1_1441833424464_4263" dir="ltr"><br></div><div id="yui_3_16_0_1_1441833424464_4264" dir="ltr"><span class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;" id="docs-internal-guid-6177872e-b42d-bfec-4ef4-064de28c9f08">rrdtool create sample.rrd --step 3600 DS:sample:GAUGE:5400:U:U RRA:AVERAGE:0.5:4:28 RRA:AVERAGE:0.5:24:90 RRA:MAX:0.5:24:90</span></div><div id="yui_3_16_0_1_1441833424464_4265" dir="ltr"><br><span class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;" id="docs-internal-guid-6177872e-b42d-bfec-4ef4-064de28c9f08"></span></div><div id="yui_3_16_0_1_1441833424464_4266" dir="ltr"><span class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;" id="docs-internal-guid-6177872e-b42d-bfec-4ef4-064de28c9f08">The database is being populated as expected, the problem is to generate a chart.</span></div><div id="yui_3_16_0_1_1441833424464_4267" dir="ltr"><br><span class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;" id="docs-internal-guid-6177872e-b42d-bfec-4ef4-064de28c9f08"></span></div><div id="yui_3_16_0_1_1441833424464_4268" dir="ltr"><span class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;" id="docs-internal-guid-6177872e-b42d-bfec-4ef4-064de28c9f08">If want to generate a chart from the first RRA (a week interval, with the average calculated with 4 to 4 hours interval), that seems to be simple, I just need to specify the start and end of the week with the corresponding "--start" and "--end" command line options, for instance:</span></div><div id="yui_3_16_0_1_1441833424464_4293" dir="ltr"><br></div><div class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;" id="docs-internal-guid-6177872e-b433-6181-4b56-b23ae7e1394c"><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;">rrdtool graph "$HOME/week.png" "DEF:thisweek=$HOME/sample.rrd:sample:AVERAGE:step=4" "LINE1:thisweek#0000FF:rows average" --imgformat PNG --end 1440000000 --start 1439611200 --title='Backlog of Workflow Policies' --vertical-label 'Number of rows' --width 800 --height 600</span></div><div id="yui_3_16_0_1_1441833424464_4299" class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><br><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;"></span></div><div id="yui_3_16_0_1_1441833424464_4324" class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;">That seems to be simple, but how do I specify to use the last two RRAa, which have an average and max (respective) for a whole day items checked? Ignoring the consolidation function (AVERAGE or MAX) specified in the graph command, how do I make sure I'm fetching from the correct RRA? Only by using "--start" or "--end", or do I have also to specify the step (24)?</span></div><div id="yui_3_16_0_1_1441833424464_4349" class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;"><br>Thanks!</span></div><div id="yui_3_16_0_1_1441833424464_4350" class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><br><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;"></span></div><div id="yui_3_16_0_1_1441833424464_4358" class="" dir="ltr" style="line-height:1.38;margin-top:0pt;margin-bottom:0pt;"><span id="yui_3_16_0_1_1441833424464_4298" class="" style="font-size:14.666666666666666px;font-family:Arial;color:#000000;background-color:transparent;font-weight:400;font-style:normal;font-variant:normal;text-decoration:none;vertical-align:baseline;">Alceu<br></span></div><div id="yui_3_16_0_1_1441833424464_4162"><br></div></div></body></html>