[Users] Memory usage

[René Koch]

On Wed, 2014-02-12 at 14:55 +0100, Koen Vanoppen wrote:
> Dear all,
> 
> 
> When we monitor one of our machines, we noticed that there was one vm
> that was constantly giving a error of memory usage. But when we took a
> look at it, there is actually nothing wrong with it. Now we looked
> furhter then that. We looked at the API of the machine and noticed
> something very strange:
> 
> <statistic
> href="/api/vms/3b9aa245-75ff-42e8-b921-1c9ce61826bf/statistics/b7499508-c1c3-32f0-8174-c1783e57bb08" id="b7499508-c1c3-32f0-8174-c1783e57bb08"><name>memory.used</name><description>Memory used (agent)</description><values type="INTEGER"><value><datum>-944892806</datum></value></values><type>GAUGE</type><unit>BYTES</unit>
> 
> 
> It's a negative...


Do you have memcached running in this vm?

I heard about this issue with memcached, but never tested memcached in
my oVirt environment. You get the real usage value with
memory.used = memory.installed + memory.used


Regards,
René

> 
> 
> What could be the problem?
> 
> 
> Kind regards,
> 
> koen
> 
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