<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=us-ascii"><meta name=Generator content="Microsoft Word 12 (filtered medium)"><!--[if !mso]><style>v\:* {behavior:url(#default#VML);}
o\:* {behavior:url(#default#VML);}
w\:* {behavior:url(#default#VML);}
.shape {behavior:url(#default#VML);}
</style><![endif]--><style><!--
/* Font Definitions */
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
@font-face
{font-family:Verdana;
panose-1:2 11 6 4 3 5 4 4 2 4;}
@font-face
{font-family:Webdings;
panose-1:5 3 1 2 1 5 9 6 7 3;}
@font-face
{font-family:"Arial Narrow";
panose-1:2 11 6 6 2 2 2 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
margin-bottom:.0001pt;
font-size:12.0pt;
font-family:"Times New Roman","serif";}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
a:visited, span.MsoHyperlinkFollowed
{mso-style-priority:99;
color:purple;
text-decoration:underline;}
span.EmailStyle17
{mso-style-type:personal-reply;
font-family:"Calibri","sans-serif";
color:#1F497D;}
.MsoChpDefault
{mso-style-type:export-only;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-NZ link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>rrdtool create boiler.rrd \<o:p></o:p></p><p class=MsoNormal>--start 1325232008 --step 600 \<o:p></o:p></p><p class=MsoNormal>DS:boiler_out_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:boiler_in_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:vihara_in_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:vihara_out_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_in_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_out_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:cistern_top:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:cistern_bottom:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:boiler_flow_gpm:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:vihara_flow_gpm:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_flow:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:boiler_btu_per_hr:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:vihara_btu_per_hr:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000 \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_btu_per_hr:GAUGE:600:0:U RRA:AVERAGE:0.5:20:10000<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Your RRAs are applied over ALL DSs, not just the previous one. So, you only need to do this:<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal>rrdtool create boiler.rrd \<o:p></o:p></p><p class=MsoNormal>--start 1325232008 --step 600 \<o:p></o:p></p><p class=MsoNormal>DS:boiler_out_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:boiler_in_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:vihara_in_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:vihara_out_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_in_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_out_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:cistern_top:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:cistern_bottom:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:boiler_flow_gpm:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:vihara_flow_gpm:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_flow:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:boiler_btu_per_hr:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:vihara_btu_per_hr:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>DS:outbldg_btu_per_hr:GAUGE:600:0:U \<o:p></o:p></p><p class=MsoNormal>RRA:AVERAGE:0.5:20:10000<o:p></o:p></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Possibly you have also hit a limit somewhere, but this is the first irregularity that I noticed.<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Steve<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></p><div class=MsoNormal align=center style='text-align:center'><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><hr size=2 width="100%" align=center></span></div><p class=MsoNormal><b><span style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Steve Shipway<o:p></o:p></span></b></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>ITS Unix Services Design Lead<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>University of Auckland, New Zealand<o:p></o:p></span></p><p class=MsoNormal><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'>Floor 1, 58 Symonds Street, Auckland<o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Phone: +64 (0)9 3737599 ext 86487<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>DDI: +64 (0)9 924 6487<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Mobile: +64 (0)21 753 189<o:p></o:p></span></i></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#595959'>Email: <a href="mailto:s.shipway@auckland.ac.nz"><span style='color:#595959'>s.shipway@auckland.ac.nz</span></a><o:p></o:p></span></i></p><p class=MsoNormal><span lang=EN-GB style='font-size:18.0pt;font-family:Webdings;color:green'>P</span><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue'> </span><span lang=EN-GB style='font-size:10.0pt;font-family:"Arial Narrow","sans-serif";color:green'>Please consider the environment before printing this e-mail</span><span lang=EN-GB style='font-size:11.0pt;font-family:"Calibri","sans-serif";color:blue'> </span><span lang=EN-GB style='font-size:7.5pt;font-family:"Verdana","sans-serif";color:navy'><o:p></o:p></span></p><p class=MsoNormal><i><span style='font-size:10.0pt;font-family:"Calibri","sans-serif";color:#1F497D'><o:p> </o:p></span></i></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></div></body></html>