Virt AIO-Stress Virt disk performance tests. HProxmox,ZFS,No cacheGext4: Processor: Intel Xeon L5640 @ 2.26GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1024MB, Disk: 4GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Arch Linux, Kernel: 4.9.6-1-ARCH (x86_64), Compiler: GCC 6.3.1 20170109, File-System: ext4, Screen Resolution: 1024x768, System Layer: qemu H:Proxmox,ZFS,Write back G:ext4: Processor: Intel Xeon L5640 @ 2.26GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1024MB, Disk: 4GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Arch Linux, Kernel: 4.9.6-1-ARCH (x86_64), Compiler: GCC 6.3.1 20170109, File-System: ext4, Screen Resolution: 1024x768, System Layer: qemu H:Proxmox,ZFS,Write through G:ext4: Processor: Intel Xeon L5640 @ 2.26GHz (2 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996), Chipset: Intel 440FX- 82441FX PMC, Memory: 1024MB, Disk: 4GB, Graphics: Cirrus Logic GD 5446, Network: Red Hat Virtio device OS: Arch Linux, Kernel: 4.9.6-1-ARCH (x86_64), Compiler: GCC 6.3.1 20170109, File-System: ext4, Screen Resolution: 1024x768, System Layer: qemu AIO-Stress 0.21 Test: Random Write MB/s > Higher Is Better HProxmox,ZFS,No cacheGext4 ......... 203.57 |=============================== H:Proxmox,ZFS,Write back G:ext4 .... 222.45 |================================== H:Proxmox,ZFS,Write through G:ext4 . 42.06 |======