[Xymon] Custom 60 second interval test still has 5 min interval graph
J.C. Cleaver
cleaver at terabithia.org
Wed Jul 1 01:12:42 CEST 2015
This is correct.
The data format for a "round robin database" is fixed at creation time for
a certain number of data points at a certain interval, using a certain
method for combining them (typically 'AVERAGE' by default).
When you're increasing the number of data points you're submitting, you're
putting more data in, but you're still only going to see 5 minute average
"chunks" (and the larger ones). To actually increase the resolution you're
saving at, you'll want to use (I believe) the 'rrdtune' command.
Alternatively, some find it easier to export/re-import the data into a new
file.
HTH,
-jc
On Tue, June 30, 2015 2:21 pm, Scot Kreienkamp wrote:
> Hey everyone,
>
> I created a custom test and RRD definition because I wanted to reduce the
> interval time on a few graphs from 5 minute resolution to 1 minute. I got
> the data to be logged once every minute, which I verified is hitting the
> RRD. The problem is that when I view the graph it's still got a
> resolution of 5 minutes.
>
> Here's the partial RRDTool dump:
>
> <!-- 2015-06-30 16:53:00 EDT / 1435697580 -->
> <row><v> 1.0033333333e+01 </v></row>
> <!-- 2015-06-30 16:54:00 EDT / 1435697640 -->
> <row><v> 1.0550000000e+01 </v></row>
> <!-- 2015-06-30 16:55:00 EDT / 1435697700 -->
> <row><v> 5.6333333333e+00 </v></row>
> <!-- 2015-06-30 16:56:00 EDT / 1435697760 -->
> <row><v> 7.3166666667e+00 </v></row>
> <!-- 2015-06-30 16:57:00 EDT / 1435697820 -->
> <row><v> 7.5000000000e+00 </v></row>
> <!-- 2015-06-30 16:58:00 EDT / 1435697880 -->
> <row><v> 6.2500000000e+00 </v></row>
> <!-- 2015-06-30 16:59:00 EDT / 1435697940 -->
> <row><v> 7.5500000000e+00 </v></row>
> <!-- 2015-06-30 17:00:00 EDT / 1435698000 -->
> <row><v> 9.3333333333e+00 </v></row>
> <!-- 2015-06-30 17:01:00 EDT / 1435698060 -->
> <row><v> 5.2666666667e+00 </v></row>
> <!-- 2015-06-30 17:02:00 EDT / 1435698120 -->
> <row><v> 7.0666666667e+00 </v></row>
> <!-- 2015-06-30 17:03:00 EDT / 1435698180 -->
> <row><v> 6.4000000000e+00 </v></row>
> <!-- 2015-06-30 17:04:00 EDT / 1435698240 -->
> <row><v> 6.4000000000e+00 </v></row>
> <!-- 2015-06-30 17:05:00 EDT / 1435698300 -->
> <row><v> 1.3000000000e+01 </v></row>
> <!-- 2015-06-30 17:06:00 EDT / 1435698360 -->
> <row><v> 9.2000000000e+00 </v></row>
> <!-- 2015-06-30 17:07:00 EDT / 1435698420 -->
> <row><v> 3.4650000000e+01 </v></row>
> <!-- 2015-06-30 17:08:00 EDT / 1435698480 -->
> <row><v> 5.7200000000e+01 </v></row>
> <!-- 2015-06-30 17:09:00 EDT / 1435698540 -->
> <row><v> 5.0283333333e+01 </v></row>
> <!-- 2015-06-30 17:10:00 EDT / 1435698600 -->
> <row><v> 4.4100000000e+01 </v></row>
> <!-- 2015-06-30 17:11:00 EDT / 1435698660 -->
> <row><v> 4.1500000000e+01 </v></row>
> <!-- 2015-06-30 17:12:00 EDT / 1435698720 -->
> <row><v> 2.4500000000e+01 </v></row>
> <!-- 2015-06-30 17:13:00 EDT / 1435698780 -->
> <row><v> 1.2000000000e+01 </v></row>
>
> So the data is getting logged every 60 seconds. It's also rolling up to
> the 5 second, etc, values.
>
> Here's the line from xymonserver.cfg:
>
> SPLITNCV_cpustat="*:GAUGE:180:0:100" #Configure for 60 second intervals,
> range of 0-100
>
>
> Here's the lines from rrddefinitions.cfg:
> [cpustat]
> -s 60
> RRA:AVERAGE:0.1:1:120
> RRA:AVERAGE:0.5:5:576
> RRA:AVERAGE:0.5:30:576
> RRA:AVERAGE:0.5:120:576
> RRA:AVERAGE:0.5:1440:576
> RRA:MAX:0.1:1:120
> RRA:MAX:0.5:5:576
> RRA:MAX:0.5:30:576
> RRA:MAX:0.5:120:576
> RRA:MAX:0.5:1440:576
>
> Here's the graph definition:
> [cpustat]
> FNPATTERN ^cpustat.(.+).rrd
> TITLE % CPU usage
> YAXIS Percent
> DEF:p at RRDIDX@=@RRDFN@:lambda:MAX
> LINE2:p at RRDIDX@#@COLOR@:@RRDPARAM@
> GPRINT:p at RRDIDX@:LAST: \: %5.0lf (cur)
> GPRINT:p at RRDIDX@:MAX: \: %5.0lf (max)
> GPRINT:p at RRDIDX@:MIN: \: %5.0lf (min)
> GPRINT:p at RRDIDX@:AVERAGE: \: %5.0lf (avg)\n
>
>
>
>
> I had read that RRDTool should use the lowest resolution available, which
> is 1 minute for this RRD. So why are the graphs not going less than 5
> minute intervals when zooming in? Any ideas?
>
> Thanks!
>
> Scot Kreienkamp | Senior Systems Engineer | La-Z-Boy Corporate
> One La-Z-Boy Drive | Monroe, Michigan 48162 | * 734-384-6403 | | *
> 7349151444 | * Scot.Kreienkamp at la-z-boy.com<mailto:%7BE-mail%7D>
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>
> [cid:lzbVertical_hres.jpg]
>
>
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