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Wonderful - works well,<BR>
<BR>
Thanks for your help.<BR>
<BR>
On Sun, 2008-03-23 at 14:48 +0100, Alex van den Bogaerdt wrote:
<BLOCKQUOTE TYPE=CITE>
<PRE>
<FONT COLOR="#000000">On Sat, Mar 22, 2008 at 11:24:20PM +0100, Peter Hall wrote:</FONT>
<FONT COLOR="#000000">> I need to obtain the average of the maximum's that have been collected</FONT>
<FONT COLOR="#000000">> over a period of time.</FONT>
<FONT COLOR="#000000">> I have 6 RRD's that have been created with the following command, 1 for</FONT>
<FONT COLOR="#000000">> each system...</FONT>
<FONT COLOR="#000000">> </FONT>
<FONT COLOR="#000000">> rrdtool create statistics.rrd --start 1203393659 --step 60 \</FONT>
<FONT COLOR="#000000">> DS:smh_da:GAUGE:60:1:U \</FONT>
<FONT COLOR="#000000">> RRA:AVERAGE:0.5:1:302400 \</FONT>
<FONT COLOR="#000000">> RRA:MIN:0.5:1440:60 \</FONT>
<FONT COLOR="#000000">> RRA:MAX:0.5:1440:60 </FONT>
<FONT COLOR="#000000">Good. Maximums are present.</FONT>
<FONT COLOR="#000000">> rrdtool graph delivery.png --title "Total Delivery Rate (Test)" \</FONT>
<FONT COLOR="#000000">> DEF:smvs41m=$base/smvs41/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> DEF:smvs61m=$base/smvs61/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> DEF:smvs81m=$base/smvs81/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> DEF:smvs51m=$base/smvs51/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> DEF:smvs71m=$base/smvs71/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> DEF:smvs91m=$base/smvs91/statistics.rrd:smh_da:MAX \</FONT>
<FONT COLOR="#000000">> CDEF:totalm=smvs41m,smvs61m,+,smvs81m,+,smvs51m,+,smvs71m,+,smvs91m,+ \</FONT>
<FONT COLOR="#000000">totalm is an array of sums of all maximums. For instance: look at</FONT>
<FONT COLOR="#000000">smvs41m as an array:</FONT>
<FONT COLOR="#000000">smvs41m[0]=some value</FONT>
<FONT COLOR="#000000">smvs41m[1]=some value</FONT>
<FONT COLOR="#000000">smvs41m[2]=some value</FONT>
<FONT COLOR="#000000">... and so on.</FONT>
<FONT COLOR="#000000">Dito for the other data sources.</FONT>
<FONT COLOR="#000000">Now totalm is an array of sums:</FONT>
<FONT COLOR="#000000">totalm[0]=smvs41m[0]+smvs61m[0]+smvs81m[0]...91m[0]</FONT>
<FONT COLOR="#000000">totalm[1]=smvs41m[1]+smvs61m[1]+smvs81m[1]...91m[1]</FONT>
<FONT COLOR="#000000">... and so on</FONT>
<FONT COLOR="#000000">> VDEF:smh_ave=totalm,AVERAGE \</FONT>
<FONT COLOR="#000000">smh_ave is the average of the values in totalm ...</FONT>
<FONT COLOR="#000000">> GPRINT:smh_ave:" %5.0lf" \</FONT>
<FONT COLOR="#000000">... and is printed.</FONT>
<FONT COLOR="#000000">Summary: you are printing the average of the sum of the maximums for</FONT>
<FONT COLOR="#000000">each datasource, for each time interval. The number will be 600% of</FONT>
<FONT COLOR="#000000">what you expect.</FONT>
<FONT COLOR="#000000">It seems to me that you want something different:</FONT>
<FONT COLOR="#000000">CDEF:avgmax1=smvs41m,smvs61m,smvs81m,smvs51m,smvs71m,smvs91m,AVG</FONT>
<FONT COLOR="#000000">VDEF:avgmax2=avgmax1,AVERAGE</FONT>
<FONT COLOR="#000000">This will, for each time interval, compute an average of each maximum</FONT>
<FONT COLOR="#000000">(the CDEF), and then compute an average of those averages (the VDEF).</FONT>
<FONT COLOR="#000000">HTH</FONT>
</PRE>
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<PRE>
Peter Hall
Systems Engineer
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</PRE>
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