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<p class="MsoNormal">On Sat, 6 Mar 2021 at 02:04, Scot Kreienkamp <<a href="mailto:Scot.Kreienkamp@la-z-boy.com">Scot.Kreienkamp@la-z-boy.com</a>> wrote:<o:p></o:p></p>
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<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">2021-03-03 01:24:19.002264 xxx/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614731059,
different data</span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif"> </span><span lang="EN-US"><o:p></o:p></span></p>
<p class="MsoNormal" style="mso-margin-top-alt:auto;mso-margin-bottom-alt:auto"><span lang="EN-US" style="font-size:11.0pt;font-family:"Calibri",sans-serif">That usually happens because graphs by default store data once every 5 minutes. However, if it receives
data more often, say every minute, then it can’t store that in the RRD because it can only store one data point every 5 minutes. Since it’s receiving data more often than once in the 5 minute window the RRD backend triggers that message. </span><span lang="EN-US"><o:p></o:p></span></p>
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<p class="MsoNormal"><o:p> </o:p></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:black">></span><span lang="EN-US">Are you receiving these "duplicate RRD data" messages every 5 minutes, or only occasionally (such as when you're seeing gaps in your graphs)?<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:black">></span><span lang="EN-US">It might be helpful to see one of your graphs with gaps in it.<o:p></o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:black">></span><span lang="EN-US">Also, can you provide maybe 10 sequential log messages with the "duplicate RRD data" in them?
</span>I'd like to get a sense of their regularity and frequency.<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-03 01:24:19.002264 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614731059, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-03 02:55:15.002852 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614736515, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-04 10:01:17.004140 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614848477, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-05 14:15:25.007389 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614950125, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-05 14:15:25.007523 x/ifstat.eno16780032.rrd: Bug - duplicate RRD data with same timestamp 1614950125, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-05 22:56:18.014486 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1614981378, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-05 22:56:18.015006 x/ifstat.eno16780032.rrd: Bug - duplicate RRD data with same timestamp 1614981378, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-06 12:30:28.002023 x/netstat.rrd: Bug - duplicate RRD data with same timestamp 1615030228, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">2021-03-06 12:30:28.002952 x/ifstat.eno16780032.rrd: Bug - duplicate RRD data with same timestamp 1615030228, different data<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
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<p class="MsoNormal"><span lang="EN-US" style="color:black">></span><span lang="EN-US">One last thing to look at.
</span>Are the gaps actual missing data points, or are they values of zero? <span lang="EN-US">
The way to tell this is to dump the RRD file's contents using something like "rrdtool fetch netstat.rrd AVERAGE | tail -100" (or "less rather than tail -100) and look for either zero or low numbers,
<span style="color:black">></span>or NaN (not a number) entries. </span>[Note that the last few are usually NaN because they're still waiting for updates, so you can ignore those.]<o:p></o:p></p>
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<p class="MsoNormal"><span style="color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Currently I cant actually find a graph with a gap in it. I just noticed because it happened on the Xymon server itself. On my old setup, it never happened.<o:p></o:p></span></p>
<p class="MsoNormal"><span style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Also in xymonclient.log I get these quite alot, dunno if its related:<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">mv: cannot stat '/dev/shm/logfetch.x.cfg.tmp': No such file or directory<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">cat: /dev/shm/xymon_vmstat.x: No such file or directory<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">cat: /dev/shm/xymon_vmstat.x: No such file or directory<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Regards,<o:p></o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black"><o:p> </o:p></span></p>
<p class="MsoNormal"><span lang="EN-US" style="font-size:10.0pt;font-family:"Verdana",sans-serif;color:black">Carl<o:p></o:p></span></p>
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