I would like to suggest adding **I/O Delay (%)** as a first-class resource usage indicator in the Proxmox VE Web UI.
Currently, Proxmox provides useful real-time information for resources such as CPU usage, memory usage, disk activity, network traffic, and other metrics. However, **I/O delay is particularly valuable when diagnosing storage-related performance problems**, and it would be extremely useful to see it directly in the Web UI.
### Proposed feature
Add an **I/O Delay (%)** column/indicator for every VM and container, showing the percentage of time that the guest is being delayed while waiting for I/O.
Ideally, this would appear everywhere Proxmox currently displays resource consumption information.
