[Xymon] xymon freebsd memory calculations

[Scott, Brian]

This is a good work around because of the fall back. The same will happen if you update your FreeBSD system to 9-STABLE because of the message text change.

The only reason to use the vm.total sysctl is that it will be a more accurate measure (5 second average rather than point in time snapshot). This only matters if memory is very tight on your system (as they are on one of mine).

-----Original Message-----
From: xymon-bounces at xymon.com [mailto:xymon-bounces at xymon.com] On Behalf Of Kris Persson
Sent: Saturday, 5 May 2012 5:31 AM
To: xymon at xymon.com
Subject: Re: [Xymon] xymon freebsd memory calculations

Brian Scott <Brian.Scott at ...> writes:

> Hi people,
> 
> I was just trying to track down why the memory used was showing 0% on 
> my FreeBSD systems and have found an interesting bug.
> 
> The logic in xymond/client/freebsd.c is a little funny with fall back 
> positions depending on what is supplied from the client, but 
> essentially if there is no vmtotal section in the client data (old 
> client) then the figure is used from meminfo which has been pretty 
> good (but perhaps not perfect). If there is a section “Free Memory 
> Pages” in the vmtoal section then that number is used in preference.
> 

I was unable to get your patch to work on my freebsd machines,  I found it easier to simply comment out the vm lines in the xymonclient-freebsd.sh file and my memory functions came back to life. 

/www/xymon/client/bin/xymonclient-freebsd.sh
#echo "[vmtotal]"
#sysctl vm.vmtotal

I use a mofified freebsd-meminfo taken from Ralf S. Engelschall freebsd-memory perl script.

I can provide the script as needed just email me.




**********************************************************************
This message is intended for the addressee named and may contain
privileged information or confidential information or both. If you
are not the intended recipient please delete it and notify the sender.
**********************************************************************