[Xymon] Another weirdness - RRD info has gaps

[Betsy Schwartz]

These two graphs were generated from the same script, sending the same
data to two different tests :

http://www.flickr.com/photos/betsys99/7705982914/in/photostream

You can see that the first test has chunks missing at regular
intervals. These two graphs were made from the same data, sent from
the same perl script, to two different tests, RTM and rtmstats. I did
this originally back when I was having trouble with RRD choking on the
extra information and wanted to separate the stats, but I've kept it
because the one graph is so spotty.  On the client side,my perl script
for the test is logging that it is sending the data correctly, and I
believe it's always displaying correctly on the test page

 On the xymon server, I see the rrd file for RTM is missing some
entries that are populated on the rtmstats, for example:

RTM:
         <!-- 2012-08-01 17:05:00 EDT / 1343855100 -->
<row><v>3.5954352000e+05</v><v>3.5456424000e+05</v><v>1.0610000000e+03</v><v>3.9142800000e+03</v><v>4.9752800000e+03</v><v>1.3876000000e+00</v></row>
         <!-- 2012-08-01 17:10:00 EDT / 1343855400 -->
<row><v>NaN</v><v>NaN</v><v>NaN</v><v>NaN</v><v>NaN</v><v>NaN</v></row>
rtmstats:
            <!-- 2012-08-01 17:05:00 EDT / 1343855100 -->
<row><v>3.5954352000e+05</v><v>3.5456424000e+05</v><v>1.0610000000e+03</v><v>3.9142800000e+03</v><v>4.9752800000e+03</v><v>1.3876000000e+00</v></row>
            <!-- 2012-08-01 17:10:00 EDT / 1343855400 -->
<row><v>3.8017446000e+05</v><v>3.7497760000e+05</v><v>1.0860800000e+03</v><v>4.1067800000e+03</v><v>5.1928600000e+03</v><v>1.3678000000e+00</v></row>

What could be causing this discrepancy?


Looking at that interval on the client side log:
/home/xymon/client/bin/bb 10.100.5.42 'status+12h
myhost.example.com.RTM  green  Wed Aug  1 17:04:15 2012
 Total : 357039
 Success : 352086
 Temp_Errors : 1058
 Other_Errors : 3891
 Total_Errors : 4949
 Percent_Failure : 1.39%
<SNIP lots more stuff>

'/home/xymon/client/bin/bb 10.100.5.42 'status+12h
myhost.example.com.rtmstats green  Wed Aug  1 17:04:15 2012
 Total : 357039
 Success : 352086
 TempErrors : 1058
 OtherErrors : 3891
 TotalErrors : 4949
 PercentFailure : 1.39%