[Xymon] some graphs 5 hours behind

Steve Holmes sholmes42 at gmail.com
Tue Oct 9 02:01:37 CEST 2012

You are right. I'm pretty sure they are all in sync, but will verify that tomorrow. 

Wherever you go, there you are.  

On Oct 8, 2012, at 6:32 PM, "Novosielski, Ryan" <novosirj at umdnj.edu> wrote:

> You didn't mention that you checked that all of your clocks are in sync/in the right timezone. Did you?
> From: Steve Holmes [mailto:sholmes42 at mac.com] 
> Sent: Monday, October 08, 2012 05:40 PM
> To: xymon at xymon.com <xymon at xymon.com> 
> Subject: [Xymon] some graphs 5 hours behind 
> We are working on upgrading, but in the mean time I'm trying to keep our Xymon 4.2.3 on an older SPARC running and making sense.
> So, for some as yet undetermined reason some (but not all) rrd files have started being updated about 5 hours behind. I.e. we can correlate events that we know happened at certain times with the graphs so the clock isn't somehow messed up (besides it looks ok to us in the shell), and when I do an rrdtool dump it is clear that the data is being added from 5 hours ago, or at least the last entry in the 12 hour database is stamped from about 5 hours earlier. 
> It appears to only be affecting the rrd files for the graphs that are only on the trends page. I.e. graphs that appear on the test pages (e.g. memory, cpu, disk) are not affected. 
> The two hobbit_rrd processes are running with 30+ hours and 640 minutes of cpu time according to top. The system has been up for 30 days but Xymon was restarted about 3 weeks ago. 
> The effect of this is the graphs, of course, for the data that is behind looks like it stopped recording 5 hours ago. As we watch it the data appears but there is this gap for the last 5 hours. So the customers are uncomfortable with this.
> My questions are: What can be done about it? I hesitate to stop and start Xymon for fear of loosing all of that data. What can be the cause? I know the server is slightly overloaded and has been for a few months, but this is really weird.
> We also have been getting warnings (yellow) from bbtest
> Whoops ! bb failed to send message - timeout
> Which results in gaps in the data, but those are usually only a few minutes in duration and are only occasional. 
> Thanks,
> Steve
> -- 
> If they give you ruled paper, write the other way. -Juan Ramon Jimenez, poet, Nobel Prize in literature (1881-1958) 
> I prayed for freedom for twenty years, but received no answer until I prayed with my legs. -Frederick Douglass, Former slave, abolitionist, editor, and orator (1817-1895) 
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