[Xymon] esxi monitoring issues, high cpu load

Hello,

I'm working on setting up esxi monitoring. We have about 20 machines that we are looking to monitor. I found xymonesxi on sourceforge and got everything up and running. However, if I add more than a few esxi servers the cpu spikes on the xymon box. I'm not getting any errors in the esxi or esx logs.

Has anyone else noticed the high cpu load using this check? Is there anything I can do to mitigate the issue?

Thanks, mjr