dellr720-sas3 KVM testing on Ubuntu 20.04 via the Phoronix Test Suite. SSD Raid10 NFS defaults: Processor: Intel Xeon E5-2650 v2 (16 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-91-generic (x86_64), Vulkan: 1.0.2, Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM SSD Raid10 NFS sync disabled atime off: Processor: Intel Xeon E5-2650 v2 (16 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-91-generic (x86_64), Vulkan: 1.0.2, Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM SSD Raid10 NFS defaults with zil: Processor: Intel Xeon E5-2650 v2 (16 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-91-generic (x86_64), Vulkan: 1.0.2, Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM NFS defaults with zil - 2 cpu sockets numa: Processor: 2 x Intel Xeon E5-2650 v2 (32 Cores), Motherboard: QEMU Standard PC (i440FX + PIIX 1996) (rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org BIOS), Chipset: Intel 440FX 82441FX PMC, Memory: 16GB, Disk: 34GB QEMU HDD, Graphics: bochs-drmdrmfb, Monitor: QEMU Monitor, Network: Red Hat Virtio device OS: Ubuntu 20.04, Kernel: 5.4.0-91-generic (x86_64), Vulkan: 1.0.2, Compiler: GCC 9.3.0, File-System: ext4, Screen Resolution: 1024x768, System Layer: KVM IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 68.27 |==================== SSD Raid10 NFS sync disabled atime off ..... 92.47 |=========================== SSD Raid10 NFS defaults with zil ........... 81.08 |======================== NFS defaults with zil - 2 cpu sockets numa . 83.78 |======================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 45.26 |============== SSD Raid10 NFS sync disabled atime off ..... 89.97 |=========================== SSD Raid10 NFS defaults with zil ........... 78.32 |======================== NFS defaults with zil - 2 cpu sockets numa . 71.16 |===================== IOzone 3.465 Record Size: 64Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 2734.51 |====================== SSD Raid10 NFS sync disabled atime off ..... 3041.38 |========================= SSD Raid10 NFS defaults with zil ........... 2939.27 |======================== NFS defaults with zil - 2 cpu sockets numa . 2907.03 |======================== IOzone 3.465 Record Size: 4Kb - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 1223.08 |======================== SSD Raid10 NFS sync disabled atime off ..... 1279.60 |========================= SSD Raid10 NFS defaults with zil ........... 1260.37 |========================= NFS defaults with zil - 2 cpu sockets numa . 1199.46 |======================= IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 69.69 |==================== SSD Raid10 NFS sync disabled atime off ..... 93.41 |=========================== SSD Raid10 NFS defaults with zil ........... 76.77 |====================== NFS defaults with zil - 2 cpu sockets numa . 65.60 |=================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 66.71 |============================================== IOzone 3.465 Record Size: 1MB - File Size: 512MB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults .................... 2707.55 |==================== SSD Raid10 NFS sync disabled atime off ..... 3036.85 |====================== SSD Raid10 NFS defaults with zil ........... 3401.09 |========================= NFS defaults with zil - 2 cpu sockets numa . 3025.41 |====================== IOzone 3.465 Record Size: 64Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 3404.07 |============================================ IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 55.44 |============================================== IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Write Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 60.79 |============================================== IOzone 3.465 Record Size: 4Kb - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 1713.89 |============================================ IOzone 3.465 Record Size: 1MB - File Size: 2GB - Disk Test: Read Performance MB/s > Higher Is Better SSD Raid10 NFS defaults . 2741.23 |============================================