[smokeping-users] Re: unresponsive system

[Robert Reilly]

All,
It turned out to be memory... I found this out yesterday. I have an ESX
VM running SLES9 and the default VM config is 256MB barely enough to run
SLES. Amazingly it ran SLES, Smokeping, Cacti with no problem on 256MB
of RAM! The problem cam when I installed Opennms, I think it pushed it
over the edge when I added postgres on top of mysql, Tomcat on top on
apache and finally the opennms application itself. I am not sure what
other OS could have done all that only on 256MB of ram. Thanks for the
response Niko.
Robert

-----Original Message-----
From: Niko Tyni [mailto:ntyni+smokeping-users at mappi.helsinki.fi] 
Sent: Tuesday, October 18, 2005 6:51 AM
To: Robert Reilly
Cc: smokeping-users at list.ee.ethz.ch
Subject: Re: [smokeping-users] unresponsive system

On Sat, Oct 15, 2005 at 05:17:31PM -0400, Robert Reilly wrote:
 
> I have smokeping logging that there are unresponsive systems in the
> configuration, I see spots on all graphs for all clients at the same
> time that there is no data, but I have checked each system and none
have
> any packet loss according to smoke ping. Yet during these times of no
> data smoke ping is logging that a polling cycle took more the x
seconds.
> Is there a way to dump out which hosts are failing ? again the nodata
> shows up for all hosts and no hosts show packet loss.

Hi,

you could try the '--debug-daemon' option, it produces lots of debug
information in the log. 

Generally it would be best to tune the polling parameters so that
unresponsive devices don't cause any problems.  Which probe(s) are you
using? If it's the FPing probe, you have to either increase the 'step'
variable or decrease 'timeout' or 'pings'.  If it's one of the others,
you can also increase the 'forks' variable, which controls how many
targets are probed concurrently.

HTH,
-- 
Niko

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