Today I noticed the following in a ESX 3.5 and Virtual Center 2.5 environment: When you check the performance of the memory(past day) on the cluster the minimum and maximum is way more than expected. In this case the minimum is 66,9% and the maximum 106,01%. This cluster has around 64GB of memory and there’s only around 30GB assigned, nowhere near the 66,9% or the 106,01% for that matter. Anyone who can confirm this behavior or even better explain it. I’m afraid it’s a bug…
Hey Duncan,
I can confirm your suspicion.
When I’m having a look at the past day’s memory performance, VI claims having an average memory usage of 258.50%, a maximum of 269.06 and a minimum of 133.31.
As the chart only shows values from 0 – 100 %, so I don’t even see a graph…
Even if all VMs would have used their maximum guaranteed RAM + overhead we’d have less than 120 of 144 GB RAM in use.
Bye
Nico
Hi Duncan
i can confirm it to..i’ve opened a support/bug request to vmware.
bye
Did you find a solution we are noticing the same problem, as far as I can tell I think it may be giving a %100 per host in the cluster. So if you had 3 hosts in your cluster your total memory usage average could get up to %300 and therefore %106 avg would not be that big of a concern? I’d be interested to hear what Vmware says about this.
Yeah it’s a known bug (on the forums anyway) since VI 2.0.1 and looks like it’s still around in 2.5.
http://communities.vmware.com/message/860873#860873
It’s been around for a bit. Gave me a scare when I first saw it.
You don’t get a graph but you can export the graph out…. not sure how valuable that option is since the figures are incorrect.