Check for memory leaks

[Kaplan, Andrew H.]

Hi there --
 
Thanks for the reply. Looks like I'll go with the threshold check. 

________________________________

From: David Wallis [mailto:wallis at aps.anl.gov] 
Sent: Thursday, November 19, 2009 1:30 PM
To: Kaplan, Andrew H.
Cc: Marcel; nagios-users at lists.sourceforge.net
Subject: Re: [Nagios-users] Check for memory leaks


Kaplan, Andrew H. wrote: 

	Hi there --
	 
	Thanks for your reply. I do have the pnp4-nagios utility installed on
the Nagios server. 
	Among the trends that are graphed by it is Current Load. 
	 
	If Current Load is the trend to look at, which of the three data sources
associated with it, 
	load1 load5 load15, would be the one affiliated with memory? 
	
	


Load average (current load) is the average number of processes that are ready to
run, averaged over 1, 5 and 15 minutes. Load average has nothing to do with
memory utilization.

There is no way to directly detect a memory leak... especially a slow one.
Nagios generally concerns itself with the status of some measured value at the
time of the check. You can check the amount of available memory, and report back
if the total free memory is less than some threshold,  but there is no plugin
that checks the status of memory over time.


-- 
David Wallis
Information Technology
Advanced Photon Source
Argonne National Laboratory



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