[mrtg] MRTG/RRD Intermittent Graphs

[Darren.Terry at cox.com]

I went from a 32-bit linux system with 2.4 series kernel to a 64-bit
linux system with a 2.4 series kernel. I went from MRTG 2.10.5 to
2.15.2. I went from rrdtool 1.0.XX to rrdtool 1.2.23. I also updated
perl (I do not remember the old version) to 5.8.8.

These devices share the vendor, Cisco. They are all being run from one
config file. There are 5973 targets in the config file. 

-----Original Message-----
From: Koelstra, J. (Jan) [mailto:JKoelstra at MINSZW.NL] 
Sent: Monday, February 04, 2008 11:51 AM
To: Terry, Darren (CCI-Hampton Roads); mrtg at lists.oetiker.ch;
rrd-users at lists.oetiker.ch
Subject: RE: [mrtg] MRTG/RRD Intermittent Graphs

Some more questions before getting to an answer:
You mention "Updated software". Does this refer to new OS version, new
MRTG version, new ... ?

Does this group of devices share something the other devices do not
share with them? Are they run from one config file or from more than
one?

Jan.


-----Original Message-----
From: mrtg-bounces at lists.oetiker.ch
[mailto:mrtg-bounces at lists.oetiker.ch] On Behalf Of Darren.Terry at cox.com
Sent: Monday, February 04, 2008 5:16 PM
To: mrtg at lists.oetiker.ch; rrd-users at lists.oetiker.ch
Subject: [mrtg] MRTG/RRD Intermittent Graphs


Hello,


     This past week I migrated a rather large RRD/MRTG system to new
servers and updated software. The system was running on a redhat 9
server with dual P3 xeons running at 1.4GHz with 1GB of memory and U160
SCSI disks in RAID 1. The new system is a dual P4 xeon system with dual
cores, 4 146GB U320 SCSI disks and 8GB of memory... this system is using
RAID 5. The MRTG system has a total of 20,757 RRDs (i.e. interfaces).
The new server has much, much more bandwidth to the disks and also much,
much more memory and processor cycles.

     Now that I have the initial post out of the way, now comes the
problem. Previously this system was polling all of the devices with no
problems at all, no gaps in the graphs. However, with this new system,
there's one group of devices that don't seem to be graphing like they
should. There are gaps in the graphs for these devices. When polling the
poll doesn't finish before the next one needs to start. This doesn't
make sense... at all. This new system should be able to poll all of
these devices with no issues. If anyone here has any experience with
this, it would be awesome if you have any pointers on how to remedy this
issue!! 

Thanks!!

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