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</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple><div class=WordSection1><p class=MsoNormalCxSpFirst><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'>Ah, finally I see what’s going on. The software pre-emptively formats timeticks instead of formatting this only when needed. This results in the data being mangled before you can even see it.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'>Instead of the HTML generation formatting the time values as needed, they are formatted prematurely, so by the time you come to plot the graph, the data is rendered unreadable.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'>As such, there is no way to fix this without desynchronising the code from the Debian repository. It’s not even that OID that is checked, but any timeTicks type.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif;color:#00007F'><o:p> </o:p></span></p><div style='border:none;border-left:solid blue 1.5pt;padding:0cm 0cm 0cm 4.0pt'><div><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'>From:</span></b><span lang=EN-US style='font-size:11.0pt;font-family:"Calibri",sans-serif'> mrtg [mailto:mrtg-bounces+resident=telcontar.net@lists.oetiker.ch] <b>On Behalf Of </b>Daniel Beardsmore<br><b>Sent:</b> 28 September 2018 10:06<br><b>To:</b> mrtg@lists.oetiker.ch<br><b>Subject:</b> [mrtg] Graphing uptime<o:p></o:p></span></p></div></div><p class=MsoNormalCxSpMiddle><o:p> </o:p></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Hello<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>I can see that graphing uptime is possible, as you can see here:<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><a href="http://www.hotelsvillegia.com/mrtg/uptime.html">http://www.hotelsvillegia.com/mrtg/uptime.html</a><o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>The HTML pages report uptime in the format: “163 days, 21:07:10”<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>If I check manually, I get this:<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>snmpget -v2c -c somecommunity somehost 1.3.6.1.2.1.1.3.0<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>DISMAN-EVENT-MIB::sysUpTimeInstance = Timeticks: (1415941565) 163 days, 21:10:15.65<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>The format is almost the same, but the latter contains the full centisecond accuracy. You do nonetheless get the raw number included.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Now, using this in MRTG yields:<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>2018-09-27 19:56:04 -- 2018-09-27 19:51:33: WARNING: Expected a number but got '163 days, 7:17:10'<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Looking at the source code, I cannot determine quite how uptime is processed. It seems odd that the format is almost the same (without the centiseconds), which suggests (along with other code) that MRTG receives pre-formatted output, and then has to scrape out the useful bits. (Which is just plain horrible if this is true.)<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Am I right in thinking that MRTG presently has no way to extract the raw figure here? It seems that the SNMP library is formatting the data prematurely and MRTG just works with that preformatted value as it suits its own purposes, but that you cannot get the raw data out if you choose, for example if you want to record uptime as a graph for checking for reboots.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>In the example posted, I suspect that was bodged to get that to work.<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Regards<o:p></o:p></span></p><p class=MsoNormalCxSpMiddle><span style='font-size:10.0pt;font-family:"Arial",sans-serif'><o:p> </o:p></span></p><p class=MsoNormalCxSpLast><span style='font-size:10.0pt;font-family:"Arial",sans-serif'>Daniel. <o:p></o:p></span></p></div></div></body></html>