VMWare's vSphere console and Veeam's monitoring utilities do an admirable job of showing admins various statistics on CPU usage, memory usage, percent utilization, etc. of VM's and the hypervisor host.
Is there a similar solution or series of solutions for monitoring a Xen server visually? Monitoring the status of VM's, their resource usage...etc...or is it mainly having to install agents on the virtualized guests and centralize it that way?