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<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Hi,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Recently we found a weird problem in history of one monitoring,
there were a lot of purple status, and the duration was “none” or 1second.
The thing we were monitoring was running fine, and this problem was there since
we used Hobbit (more than half a year), so it rules out possibility of error in
that thing.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>This monitoring is a script defined in hobbitlaunch.cfg
on Hobbit server, runs every 30m<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>I checked log, the purple status was updated by
hobbitd, and then I checked source code of hobbitd, found it checked purple
status every 30m (correct me if I’m wrong since I only know a little of C),
so I guess due to some program issues, there were some milliseconds differences
bettwen hobbitd’s determination and script’s update, that results
in very short duration of purple status.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>So after I changed interval to 25m, that weird problem
is gone.<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'><o:p> </o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Thanks,<o:p></o:p></span></font></p>
<p class=MsoNormal><font size=1 face=Arial><span lang=EN-US style='font-size:
9.0pt;font-family:Arial'>Samuel Cai<o:p></o:p></span></font></p>
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