x210-3vdev-z2 Xen HVM domU 4.13 testing on Ubuntu 18.04 via the Phoronix Test Suite. sync disabled: Processor: 2 x Intel Xeon E5-2620 v2 (4 Cores), Motherboard: Xen HVM domU v4.13, Chipset: Intel 440FX 82441FX PMC, Memory: 4096MB, Disk: 30GB, Graphics: bochsdrmfb OS: Ubuntu 18.04, Kernel: 4.15.0-128-generic (x86_64), Compiler: GCC 7.5.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.13 post reboot baseline: Processor: 2 x Intel Xeon E5-2620 v2 (4 Cores), Motherboard: Xen HVM domU v4.13, Chipset: Intel 440FX 82441FX PMC, Memory: 4096MB, Disk: 30GB, Graphics: bochsdrmfb OS: Ubuntu 18.04, Kernel: 4.15.0-128-generic (x86_64), Compiler: GCC 7.5.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.13 Additional memory allocated for zfs: Processor: 2 x Intel Xeon E5-2620 v2 (4 Cores), Motherboard: Xen HVM domU v4.13, Chipset: Intel 440FX 82441FX PMC, Memory: 4096MB, Disk: 30GB, Graphics: bochsdrmfb OS: Ubuntu 18.04, Kernel: 4.15.0-128-generic (x86_64), Compiler: GCC 7.5.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.13 allocated 8GB min to ZFS: Processor: 2 x Intel Xeon E5-2620 v2 (4 Cores), Motherboard: Xen HVM domU v4.13, Chipset: Intel 440FX 82441FX PMC, Memory: 4096MB, Disk: 30GB, Graphics: bochsdrmfb OS: Ubuntu 18.04, Kernel: 4.15.0-128-generic (x86_64), Compiler: GCC 7.5.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: Xen HVM domU 4.13 IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better sync disabled ....................... 4623.99 |============================ post reboot baseline ................ 5299.02 |================================ Additional memory allocated for zfs . 5306.54 |================================ allocated 8GB min to ZFS ............ 5356.43 |================================ IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better sync disabled ....................... 59.58 |======================= post reboot baseline ................ 74.97 |============================= Additional memory allocated for zfs . 72.35 |============================ allocated 8GB min to ZFS ............ 86.97 |==================================