Running Windows 7 as a (QEMU Copy-On-Write) image is the gold standard for high-performance virtualization on Linux-based hypervisors like KVM, Proxmox, or EVE-NG. Because Windows 7 lacks native support for modern virtual hardware, achieving "top" performance requires specific drivers and configuration tweaks. 1. Create the Optimized Disk Image
Look for low %util and high MB/s. If you see high latency, increase host RAM or move the qcow2 to an NVMe or SSD storage pool. Do not run active Windows 7 qcow2 images on spinning HDDs — that ruins "top" performance. windows 7 qcow2 top
fsutil behavior set DisableDeleteNotify 0